The resistance of the furnace is 2.4 ohm
Given,
P=24kW, V=240v,
P=[tex]\frac{V^{2} }{R}[/tex], 24kW=[tex]\frac{240^{2} }{R}[/tex], Therefore R=2.4 ohm
ResistanceA force that opposes the flow of current is electrical resistance, often known as resistance to electricity. It acts as a gauge for how challenging it is for current to flow in this fashion. Ohms (), which represent resistance values, are used. Electricity will move from high to low when an electron difference exists between two terminals. This flow is opposed by resistance. Lower currents occur at higher resistance levels. The opposite is also true: the current increases as the resistance decreases. The Greek letter omega (), which represents resistance, represents ohms. German physicist Georg Simon Ohm (1784–1854), who investigated the connection between voltage, current, and resistance, is the name given to the unit of resistance known as an ohm. Ohm's Law was developed under his direction.
A 24-kw electric furnace is connected to a 240-v line. what is the resistance of the furnace? group of answer choices
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Two electric charges qa = 1. 0 μc and qb = - 2. 0 μc are located 0. 50 m apart. how much work is needed to move the charges apart and double the distance between them
The total work done of 0.018 joules is needed to move the charges apart and double the distance between them.
We have two electric charges q(A) = 1μc and q(B) = -2μc kept at a distance 0.5 meter apart.
We have to calculate much work is needed to move the charges apart and double the distance between them.
What s the formula to calculate the Potential Energy of a system of two charges (say 'q' and 'Q') separated by a distance 'r' ?The potential energy of the system of two charges separated by a distance is given by -
[tex]U = \frac{1}{4\pi\epsilon_{o} } \frac{qQ}{r}[/tex]
In order to solve this question, it is important to remember the work - energy theorem which states -
"The change in the energy of the body is equal to work done on it"
Hence, using this work -energy theorem in the question given to us we get -
[tex]U_{f} -U_{i} =W_{net}[/tex]
In our case -
[tex]U_{f} = \frac{1}{4\pi\epsilon_{o} } \frac{qQ}{2r}\\\\U_{i} = \frac{1}{4\pi\epsilon_{o} } \frac{qQ}{r}\\\\W=\frac{1}{4\pi\epsilon_{o} } \frac{qQ}{2r} - \frac{1}{4\pi\epsilon_{o} } \frac{qQ}{r}\\\\W = \frac{qQ}{4\pi\epsilon_{o}r} (\frac{1}{2} -1)\\\\W = 9\times 10^{9}\times \frac{1 \times 10^{-6} \times 2\times10^{-6} }{0.5} \times \frac{-1}{2}[/tex]
W = 0.018 joules
Hence, the total work done should be 0.018 joules.
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Consider the two vectors a 3i-2j & b = -i-4j calculate the direction of a+b and a-b?
Direction of |a+b| is south east and that of |a-b| is north east.
Calculation:Given
a = 3i - 2j
b = -i - 4j
To find,
a+b =?
a-b =?
|a+b| = |(3i - 2j - i - 4j)|
= |2i - 6j|
= [tex]\sqrt{2^{2} + (-6^{2}) }[/tex]
= [tex]\sqrt{4+36}[/tex]
= [tex]\sqrt{40}[/tex]
= [tex]2\sqrt{10}[/tex]
|a-b| = |(3i - 2j) - (-i - 4j)|
= |3i -2j + i + 4j|
= |4i + 2j|
= [tex]\sqrt{4^{2} + 2^{2} } \\[/tex]
= [tex]\sqrt{16+ 4}[/tex]
= [tex]\sqrt{20}[/tex]
= [tex]2\sqrt{5}[/tex]
Direction of |a+b| is south east (|2i - 6j|, this shows 2 units to the right and 6 units down)
Direction of |a-b| is north east (|4i + 2j|, this shows 4 units right & 2 units up)
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The cost electricity is 0. 10. an iron 5. 2 a of current when it is plugged into a 240 v outlet. the iron is never turned off. what is the 2 years cost of operating the iron if?
The cost of operating the iron is $2186.49.
To find the answer, we have to know about the power.
How to find the cost of electricity?We have the expression for cost of electricity as,[tex]cost=power(kW)*t(hours)*(price/ kWh)[/tex]
It is given in the question that, the cost per kWh is $0.10, the current is 5.2A, the voltage is 240V.We have to find the cost for two years, before that, we have to find the power and it will be,[tex]P=IV=5.2*240=1248W[/tex]
2 years will be equal to[tex]t=2*365*24hours=17520hours.[/tex]
Thus, the value of cost will be,[tex]cost=1248*10^{-3}*17520*0.10} =\$2186.49[/tex]
Thus, we can conclude that the cost of operating the iron is $2186.49.
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If the angular speed of a 1. 1-m baseball bat is 2. 0 rad/s, what is the tangential speed of the tip of the bat?.
Tangential speed of the tip of the bat is 2.2 m/s
Given:
angular speed = 2 rad/s
radius of ball = 1. 1-m
To Find:
tangential speed
Solution: Tangential velocity is the linear speed of any object moving along a circular path. A point on the outside edge of a turntable moves a greater distance in one complete rotation than a point near to the center.
The rate of variation in the matter's tangential velocity along a circular path is known as tangential acceleration.
A tangent line traced to the circle at the location of the object points in the direction of the velocity vector at any given time.
Here, v is Tangential speed t is the time ω is angular speed and r is radius
Vt = ω r
V = 2 x 1.1
V = 2.2 m/s
Hence the Tangential speed is 2.2m/s
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A wooden block contains some nails so that its density is exactly equal to that of water. if it is placed in a tank of water and released from rest when it is completely submerged, it will?
A wooden block contains some nails so that its density is exactly equal to that of water. if it is placed in a tank of water and released from rest when it is completely submerged, it will remain where it is released.
The concept of density seeks to measure the weight of an object in relation to its size. It is the measure of how packed together the particles of that object are. An object placed in a liquid displaces a certain volume of the liquid, based on the relative density of the object and the liquid.
If an object is less dense than a liquid in which it is placed, it displaces a smaller volume of the liquid than its volume, hence only some part of the object will be seen to be under the liquid, the other part will float.
If an object is denser than the liquid in which it is placed, it displaces a larger volume of the liquid than its own volume, making the object to sink and is submerged, sometimes to the bottom of the liquid, but mostly below the point at which it was released.
Finally, if the density of an object and the liquid into which it is submerged is the same. the object's mass per unit volume is the same as the liquid's mass per unit volume, hence the weight and force created due to density will balance and cancel each other out hence making the object to remain where it was submerged.
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Which one of the following possesses the highest elasticity? a. Rubber b. Glass c. Copper d. Steel
Answer:
Correct option is D)
Steel
Answer:
Steel gives
Explanation:
Glass: 50−90GPa
Rubber:0.01−0.1GPa
Steel:200GPa
Copper: 117GPa
A fixed container containing an ideal gas is heated. The pressure of the gas increases because:_________
A fixed container containing an ideal gas is heated. The pressure of the gas increases because the molecules move faster.
You can speed up the motion of the molecules in a gas by heating it. The pressure will rise and there will be greater impacts on the container's walls.
The container walls are pressed against by the combined force of the collisions. The energy you provide when you heat the gas makes the gas's particles more kinetically energetic and put more pressure on the container.
As the temperature rises, the pressure must as well since pressure is the force the particles per unit of area exert on the container.
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Two point charges, feel a force of 1. 0 n when they are 2. 0 cm apart. if they are moved further apart to 8. 0 cm. What is the electric force between them?
Two point charges, feel a force of 1. 0 n when they are 2. 0 cm apart. if they are moved further apart to 8. 0 cm. The electric force between them will be F2 = 1/16 J
A charged particle, also called an ion, is an atom with a positive or negative charge. This happens whenever something called an ionic bond forms. Two particles that have different numbers of electrons (the smallest particle in an atom which is negative) start reacting to each other.
According to Coulomb's law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. It acts along the line joining the two charges considered to be point charges.
F1 = K q1*q2 / [tex]r1^{2}[/tex]
1 = K q1*q2 / [tex]2^{2}[/tex]
F2 = K q1*q2 / [tex]r2^{2}[/tex]
F2 = K q1*q2 / [tex]8^{2}[/tex]
F1 / F2 = 64 / 4
1 / F2 = 16 / 1
F2 = 1/16 J
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Fetch is ________. Group of answer choices the distance between the trough of a wave and the still water level the circular pattern made by water particles when a wave passes a method of shoreline erosion control the distance over which the wind blows over open water
Fetch is the distance over which the wind blows over open water generating mechanical waves; option D
What are waves?Waves are disturbance which occur in a substance or medium which project energy as they travel along a particular plane or direction.
There are two types of waves:
mechanical waveselectromagnetic wavesMechanical waves are waves which involve the disturbances that occur in particulate matter and which require a material medium for their transmission.
Fetch is an area of ocean or lake surface over which the wind blows in a constant direction, thus generating waves.
In conclusion, mechanical waves require material media for transmission.
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According to current scientific understanding, the idea that the milky way galaxy might be home to a civilization millions of years more advanced than ours is.
According to contemporary scientific understanding, the thought that the Milky Way Galaxy energy is home to a civilization millions of years more developed than ours is. one reasonable solution to Fermi's paradox.
What is the milky way galaxy?Our Milky Way galaxy is simply one of the billions of galaxies in the universe. Within it, there are at smallest 100 billion stars, and on moderate, each star contains at least one planet circling it. This means there are potentially thousands of planetary procedures like our solar system within the galaxy!The Milky Way gets its name from a Greek myth about the goddess Hera who sprayed milk across the sky. In other parts of the world, our galaxy goes by different names.The Milky Way is about we look. Up, down, left, right, that is the Milky Way. From Earth, it can be noticed as a hazy form of stars in the evening sky that the stripped eye can barely notice. You can visit the Milky Way all year, no matter where you are on the earth.To learn more about Milky Way galaxy, refer to:
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Which is an inertial reference frame (or at least a very good approximation of one)?
Earth is a good example of inertial frame of reference.
To find the answer, we have to know about the Inertial frame of reference.
What is Inertial frame of reference?In fact, an inertial frame of reference is one in which the law of inertia applies by definition. Whatever frame it is, it is not an inertial frame of reference if the law of inertia is broken in any manner. The Earth is a prime illustration of an inertial frame.Thus, we can conclude that, Earth is a good example of inertial frame of reference.
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We know that an electric field contains energy. What causes the electric field itself?
A
electrical charges on one or more particles within the field
B
the combined mass of all particles in the field
C
the degree of magnitization of particles within the field
D
No-one really knows, the field is just always there.
Electrical charges on one or more particles within the field cause the electric field
Each point in space has an electric field associated with it when a charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field
A region of space surrounding an electrically charged particle or object known as an electric field is one in which an electric charge would experience force. A vector quantity called an electric field can be represented by arrows pointing in the direction of or away from charges. The force per unit charge exerted on a positive test charge that is at rest at a given position is the force per unit charge that is used to define the electric field analytically.
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Water (3090 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?
The initial temperature of the water was 60.64 degree Celsius.
What is heat energy?Heat is the type of energy that travels from a high-temperature system to a low-temperature system when it is transmitted between things or systems of different temperatures. also known as thermal energy or heat energy. Usually, heat is expressed in Btu, calories, or joules.
Calculation for the initial temperature of the water;
The formula for release of heat energy is given by;
Q = mc∆t
Q = heat energy
m = mass
c = specific heat (of water)
∆t= change in temperature (= final - initial temp)
final temp of water = boiling point of water i.e. 100*C
'c' for water = 4.186 joule/gram °C
The mass 'm' = 3090 g.
The energy absorbed by water is 5.09×[tex]10^{5}[/tex] = 509000 J.
Let 'T' be the initial temperature.
Substitute all the value in formula to get the equation.
509000 = 3090 × 4.186 × (100 - T)
100 - T = 39.35
T = 100 - 39.35
T = 60.64
Therefore, the initial temperature of the water was 60.64 degree Celsius.
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A particle with a mass of 6. 67×10−27 kg has a de broglie wavelength of 7. 31 pm. part a what is the particle's speed?
The speed of the particle is 1.35 * [tex]10^{4}[/tex] m /s
The de Broglie equations relate the wavelength λ to the momentum p, and frequency f to the total energy E of a particle: where h is Planck's constant.
The wavelength (λ) that is associated with an object in relation to its momentum and mass is known as de Broglie wavelength.
λ = h / p
m= mass = 6.67∗[tex]10^{-27}[/tex] Kg
λ = 7.31 pm = 7.31 * [tex]10^{-12}[/tex] m (1 pm = [tex]10^{-12}[/tex] m)
h= Planck's constant = 6.62∗[tex]10^{-34}[/tex][tex]m^{2}[/tex]/Kg.s
v= velocity of particle = ?
λ = h / mv
v = h / mλ
= [6.62∗[tex]10^{-34}[/tex]] / [6.67∗[tex]10^{-27}[/tex]] [7.31 * [tex]10^{-12}[/tex]]
= 0.135 * [tex]10^{5}[/tex] m /s.
= 1.35 * [tex]10^{4}[/tex] m /s
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Ritemade machinery, inc., designs, makes, and sells a drill press. steel equipment company copies the design without ritemade's permission. steel's conduct is actionable provided that:_______
Ritemade machinery, inc., designs, makes, and sells a drill press. steel equipment company copies the design without ritemade's permission. steel's conduct is actionable provided that RiteMade's design is patented.
A design patent is a form of legal protection of the unique visual qualities of a manufactured item. A design patent may be granted if the product has a distinct configuration, distinct surface ornamentation or both or A patent is an exclusive right granted for an invention.
In other words, a patent is an exclusive right to a product or a process that generally provides a new way of doing something, or offers a new technical solution to a problem.
If you create original sketches of your designs, those sketches are protected by copyright law. That means that no one can copy, distribute, publicly display, etc. your sketch without your permission.
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A radio wave has a frequency of 3. 8 x 1010 hz. what is the energy (in j) of one photon of this radiation? (use scientific notation in your answer: 1. 0e29)
The energy (in j) of one photon of this radiation is [tex]2.518*10^{-23}[/tex]J
Given,
frequency = 3. 8 x [tex]10^{10}[/tex] hz, h = Planck's constant = 6.626*[tex]10^{-34}[/tex]Js
E=frequency*Planck's constant=3. 8 x [tex]10^{10}[/tex] hz*6.626*[tex]10^{-34}[/tex]Js=[tex]2.518*10^{-23}[/tex]J
EnergyIn physics, energy is the quantifiable attribute that is transferred to a body or to a physical system, and it can be seen as heat and light as well as while work is being done. The law of conservation of energy asserts that although energy can change its form, it cannot be created or destroyed. Energy is a conserved quantity. The International System of Units (SI) uses the joule as the unit of measurement for energy, which is defined as "the energy transferred to an object by the work of moving it a distance of one metre against a force of one newton."
A radio wave has a frequency of 3. 8 x 1010 hz. what is the energy (in j) of one photon of this radiation? (use scientific notation in your answer: 1. 0e29)
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Is water wet?
I need an argument.
Answer:
no :)
Explanation:
ezzzzzzzzzzzzzzzzzzzz
Liquid water is not itself wet, but can make other solid materials wet. Wetness is the ability of a liquid to adhere to the surface of a solid, so when we say that something is wet, we mean that the liquid is sticking to the surface of a material.
Charge is distributed uniformly along a long straight wire. the electric field 2 cm from the wire is 20 n/c. the electric field 4 cm from the wire is:__________
The electric field 4cm from the wire is
[tex]É = 10nc { }^{ - 1} [/tex]
Given:
charge is distributed uniformly along a long straight wire.
electric field 2cm from the wire is 20n/c
To find:
electric field 4cm from the wire
what is electric field?
Electric field is the region around charge particle or charged body in which if another charge is placed it experiences electrostatic force.An electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.
[tex]E ∝ \frac{1}{r} [/tex]
[tex] \frac{E}{É} = \frac{r2}{r1} [/tex]
[tex] \frac{20}{ É } = \frac{4}{2} [/tex]
[tex]É = \frac{40}{4} [/tex]
[tex]É = 10nc {}^{ - 1} [/tex]
thus the electric field 4cm from the wire is
[tex]É = 10nc { }^{ - 1} [/tex]
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A 60-m long wire is coiled so that it makes a coil containing 140 square loops, one on top of each other. if the wire carries a current of 21 a, what is the magnetic dipole moment of the coil?
A 60-m long wire is coiled so that it makes a coil containing 140 square loops, one on top of each other. if the wire carries a current of 21 a, the magnetic dipole moment of the coil will be 0.24 Am2
Dipole moment = i * A
Area = ?
given total length of the wire = 60 m number of square loops = 140total length of the wire = n * ( circumference of one loop) circumference of one loop = total length of the wire / n = 60 / 140 = 0.429 m circumference of one loop = 4 * (side of the square ) 0.429 = 4 * a a = [tex]0.107 m[/tex]
Area of loop = [tex]a^{2}[/tex]= [tex](0.107)^{2}[/tex] = [tex]0.01145 m^{2}[/tex]
Dipole moment = i * A = 21 * 0.01145 = 0.24 A [tex]m^{2}[/tex]
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What did you observe when placing the small coil in the middle of the larger coil?
With more turns of wire within the coil, the greater the strength of the static magnetic field around it.
Electromagnetic induction uses the relationship between electricity and magnetism whereby an electric current flowing through a single wire will produce a magnetic field around it. If the wire is wound into a coil, the magnetic field is greatly intensified producing a static magnetic field around itself forming the shape of a bar magnet giving a distinct North and South pole.
Likewise, if we kept the bar magnet stationary and moved the coil back and forth within the magnetic field an electric current would be induced in the coil. Then by either moving the wire or changing the magnetic field we can induce a voltage and current within the coil and this process is known as Electromagnetic Induction and is the basic principle of operation of transformers, motors and generators.
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A stretched string is observed to have four equal segments in a standing wave driven at a frequency of 480 hz. what driving frequency will set up a standing wave with five equal segments?
600Hz is the driving frequency needed to create a standing wave with five equal segments.
To find the answer, we have to know about the fundamental frequency.
How to find the driving frequency?The following expression can be used to relate the fundamental frequency to the driving frequency;f(n) = n * f (1)
where, f(1) denotes the fundamental frequency and the driving frequency f(n).
The standing wave has four equal segments, hence with n=4 and f(n)=4, we may calculate the fundamental frequency.f(4) = 4× f (1)
480 = 4× f(1)
f(1) = 480/4 =120Hz.
So, 120Hz is the fundamental frequency.
To determine the driving frequency necessary to create a standing wave with five equally spaced peaks? For, n = 5,f(n) = n 120Hz,
f(5) = 5×120Hz=600Hz.
Consequently, 600Hz is the driving frequency needed to create a standing wave with five equal segments.
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How do waves made by a dripping faucet compare to the waves seen passing through slits?
The dripping faucet onto the wave causes the frequency to stay the same throughout, it just moves up and down.
When a wave is passed through the single slit, diffraction occurs. The light spreads out and after it passes through the slit, it interferes with itself.
A student volunteers to enter a hypoxic breathing chamber with very low po2 for 10 minutes, and his alveolar po2 drops to 50 mm hg. what other change would occur?
When an individual enters a hypoxic breathing chamber, the changes that would occur would be an increase in the blood pH.
What is hypoxic breathing chamber?A hypoxic breathing chamber is a type of chamber that is built with the ability to cause an artificial high-altitude conditions.
There are various changes that would occur in the body when placed in a hypoxic state. These changes include the following:
Decrease in alveolar oxygen pressure,Increase in blood pH (acidosis)breathlessness, pallor, tachycardia, and pulmonary hypertension.Therefore, when an individual enters a hypoxic breathing chamber, the changes that would occur would be an increase in the blood pH.
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The weight of air in a column 1-m2 in cross section that extends from sea level to the top of the atmosphere is?
From sea level to the top of the atmosphere, a column of air with a 1-m2 cross section weighs 101,000 N.
To find the answer we have to know about the pressure.
What is Pressure?The pressure at a point on a surface is the thrust acting per unit area around that point.[tex]Pressure, P=\frac{Thrust}{Area}=\frac{F}{A}[/tex]
A particular mass of air is contained in a column that rises from the ocean to the top of the atmosphere. Then,[tex]P=P_a=1.013*10^5 pascal[/tex]
Pa is the atmospheric pressure at the sea level.
By combining both the equations, we get the weight of air,[tex]\frac{F}{A}=P_a[/tex]
[tex]F=W=P_a*A=1.013*10^5*1=101300N[/tex]
Thus, we can conclude that, the weight of air in a column 1-m2 in cross section that extends from sea level to the top of the atmosphere is 101300N.
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A 12 V battery is connected to a resistor, a light bulb, and a buzzer. What are the energy conversions that occur in the circuit?
The energy conservation that occurred in the circuit when a 12 V battery is connected to a resistor, a light bulb, and a buzzer is light energy (light bulb) and to sound energy (buzzer).
What is energy conservation?The principle of energy conservation states that energy can neither be created nor destroyed but can be transferred from one form to another.
When a 12 V battery is connected to a resistor, a light bulb, and a buzzer, the energy conservation that occur in the circuit is light energy (light bulb) and to sound energy (buzzer).
Thus, the energy conservation that occurred in the circuit when a 12 V battery is connected to a resistor, a light bulb, and a buzzer is light energy (light bulb) and to sound energy (buzzer).
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What would be the magnitude of the electric field 0.75 m from a 0.63 C master charge and what would be the force on a 0.50 C test charge placed here?
The magnitude of the electric field on the master charge is 1.008 x 10¹⁰ N/C, and the force on the test charge is 5.04 x 10⁹ N.
Electric field on the master chargeE = kq/r²
where;
q is magnitude of master charger is distance of separationk is Coulomb's constantE = (9 x 10⁹ x 0.63)/(0.75²)
E = 1.008 x 10¹⁰ N/C
Force on the test chargeF = Eq
where;
E is electric fieldq is the test chargeF = (1.008 x 10¹⁰) x (0.5)
F = 5.04 x 10⁹ N
Thus, the magnitude of the electric field on the master charge is 1.008 x 10¹⁰ N/C, and the force on the test charge is 5.04 x 10⁹ N.
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What observational evidence supports the idea that mercury once shrank by some 20 kilometers in radius?
A proton moving eastward with a velocity of 5. 0 × 103 m/s enters a magnetic field of 0. 20 t pointing northward. what is the magnitude and direction of the force that acts on the proton?
The magnitude of the force is 1.6*10^-16 N. The direction of force is upward.
The definition of force is the push or pull that causes a massed object to change its velocity. Force is an external agent that has the power to alter a body's resting or moving position. It has a direction and a magnitude. The total amount of forces exerted on an object is referred to as the magnitude of force.
The strength of the force increases when all the force is pulling in the same direction. When force is exerted on an item from different angles, the force's strength reduces. The amount that encapsulates the force's strength is known as its magnitude.
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What are possible reasons that explain why there is no planet between mars and jupiter?
The possible reasons why there is no planet between mars and Jupiter are the asteroid belt. But near the asteroid belt, a moon of mars is near with a big asteroid.
The asteroid belt is one of the proposed explanations for that there is no planet between Mars and Jupiter. However, a Mars moon is close to a large asteroid near the asteroid belt.
What is asteroid belt?The asteroid belt is defined as a torus-shaped area in the Solar System lying roughly between Jupiter and Mars' orbits. It is home to a large number of solid, irregularly shaped things of various sizes, but far smaller than planets, known as asteroids or minor planets.
The asteroid belt is significant because it is the source of the majority of asteroids that pass close to Earth and constitute a possible threat to life on the planet, particularly human constructions.
Therefore, One of the possible theories for the lack of a planet between Mars and Jupiter is the asteroid belt.
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what is relative velocity explain with example
Perfect question! So to start,
⇒ Concepts: Relative, Velocity
(Relative: - adjective- existing or having its specific nature only by relation to something else; not absolute or independent. -noun- something having, or standing in, some relation or connection to something else).
Velocity:
(1) Rapidity of motion or operation; swiftness; speed.
(2) The time rate of change of position of a body in a specified direction
(3) The rate of speed which something happens; rapidity of action or reaction.
Now, let's get onto relative velocity.
Assume you are operating a vehicle and pass another vehicle from behind. Actually, what happens is that the driver of the car behind you notices the one approaching from behind and ultimately turns around. Although the driver in front perceives it that way, the person on the ground does not see the automobile as driving backward. Relative velocity is what it is.
When riding in a car, bus, or train, you may see that numerous exterior objects are moving backward, including trees, buildings, and other objects. But are they actually regressing? No, you're very sure that the only thing moving while the trees are still on the ground is your car. What gives, therefore, that the trees seem to be going backward? Also, even if your fellow passengers are moving, they will look immovable to you since they are moving.
It's because you and your other passengers are moving in unison within your frame. It follows that you and the passengers are moving at the same speed. The trees are still, but you are moving. Trees are therefore moving relative to you and the other passenger at a certain speed. The velocity differential between you and the tree is that relative velocity.
Thank you,
Eddie