A spaceship travels at approximately 0. 25c with respect to earth. this means 24 hours at the spaceship will be x hours to us on earth. find the time passed ton earth

Answer:

charge passed = 1800 C

Explanation:

• We can use the following formula to calculate charge:

[tex]\boxed{Q = It}[/tex],

where:

Q = charge in Coulombs

I = current in amperes (0.5 A)

t = time in seconds (1 h = 60 min = 3600 s).

• Substituting the values into the formula:

charge = 0.5 × 3600

            = 1800 C

The mass ratio which would be required to launch a single rocket into space in the most possible efficient way is that the ratio of rocket mass to fuel mass be; 1: 14.

According to the task content, it follows that the best single rockets made by humans have an initial to final mass ratio of about 15.

In essence, it follows that if the total mass initially was 15 mass units, the final mass would be 1 mass unit.

Consequently, 14 mass units must have burned as fuel in the rocket.

On this note, it follows that the mass ratio which would be required to launch a single rocket into space is; 15: 1 and this means there are 14 mass units of fuel for the 1 mass unit of actual rocket.

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A proton moving at 7. 0 × 10^4 m/s horizontally enters a region where a magnetic field of 0. 10 t is present, directed vertically downward. The magnitude force acts on the proton due to this field will be 1.12 * [tex]10^{-23}[/tex] N

Magnetic force, attraction or repulsion that arises between electrically charged particles because of their motion.

Force in a magnetic field = q. ( v * B )

where

q = charge of particle = 1.6 * [tex]10^{-27}[/tex] C

v = velocity of particle = 7. 0 × [tex]10^{4}[/tex] m/s

B =  0. 10 T

Force =  1.6 * [tex]10^{-27}[/tex]  * 7. 0 × [tex]10^{4}[/tex]  *  0. 10

          = 1.12 * [tex]10^{-23}[/tex] N

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The displacement at the end of A is 1.09 mm

According to the question,

Rod's diameter, d= 20 mm

Stiffness constant, k = 55 M-N/m or,

                                 = 55 × 10⁶ N/m

Force, f = 60 kN or,

            = 60 × 10³ N

Young's modulus, E = 200 Gpa or,

                                = 200 × 10⁹ pa

We know the formula,

A=[tex]\pi d^2 /4[/tex]

By substituting the values,

     = [tex]\pi (0.02)^{2} /4[/tex]

=0.0003 m³

length, L =A×E/K

=1.14 m

hence,

The displacement be:

60×10³×1.14/0.0003×200×10³×10³×10³=1.09 mm

Displacement is  1.09 mm

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The displacement of end a is 1.09mm

given:

Rod diameter,d=20mm

stiffness constant,k=55mn/m

force,f=60kn

young modulus,E= 200gpa

we know the formula

[tex]\pi \: d {}^{2} /4[/tex]

By substituting values in the above formula

[tex] = \pi(0.02) {}^{2} /4[/tex]

[tex] = 0.0003m {}^{3} [/tex]

length L=A×E/K

=1.14m

Hence, displacement is

[tex]60 \times 10 {}^{3} \times 1.14 \times/0.0003 \times 200 \times 10 {}^{3} \times 10 {}^{3} \times 10 {}^{3} [/tex]

=1.09mm

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Pressure can be calculated by Pressure=Force/Area.

Therefore, if the area is decreased or reduced then pressure will be increased.

The physical amount of force applied to a certain region is known as pressure. Pressure is defined as force per unit of area. The pressure being applied to a body may be calculated by taking the amount of force being applied and dividing it by the area of contact.

Pressure=Force/Area.

two examples where the factor perpendicular is practically used to increase pressure

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The wavelength of the wave is 23.55 rad/s.

What is a wavelength simple definition?

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

Distance b/w one crest and one trough is  λ/2 and b/w two crests or two trough it is  λ.

Therefore from 2nd crest to 6th trough the total distance

                   = 4 λ +  λ /2 => 9 λ/2

that is given as:

9 λ/2 = 24 cm

λ= 16/3 cm

V = w/k => w × λ /2pi => w = 2 × 3.14 × 20 × 3/16 => 23.55 rad/s

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Since the rebound speed is one-half the speed it had just before hitting the floor, it will rise to 1/4 of the original height from which it was dropped; option C.

Rebound speed refers to the speed at which a body when it hits a surface is returned or rebounded to the original direction in which it comes from.

When objects are released from a height and allowed to hit the floor, some of the original energy of the object is converted to heat and sound, thus the object will rebound with a lesser speed and to a smaller height than from which it is released.

In the case of a rubber ball which is dropped on the floor. The rebound speed is one-half the speed it had just before hitting the floor.

Therefore, the height will be one-quarter the original height.

In conclusion, the rebounding of a ball is to a lesser height than the original height.

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At resonance, a driven rlcrlc circuit has vcvc = 5. 0 vv , vrvr = 8. 0 vv , and vlvl = 5. 0 vv having a peak voltage across the entire circuit

For any voltage waveform, the peak voltage is the highest point or voltage value. When Pulse Width Modulation (PWM) devices, like variable frequency drives, are added to a power system with a peak voltage that is equal to the square root of two times the RMS voltage, a power quality problem results.

Find the peak voltage, for instance, if the RMS voltage is 85 V. The average voltage and maximum voltage of AC power coming from the wall are both about 110 V. Therefore, the real peak voltage is 120/0.707 = 170 V. The sinusoid's amplitude is divided in half by this. Peak-to-peak voltage (Vp-p), also known as the total amplitude, is 340 V, or twice the peak voltage.

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Answer:

Thin film interference

Heat is always transferred through the movement of matter in the convection mode of heat transmission.

Heat transfer is the movement of heat from one solid or liquid item to another. Always, heat moves from one body with a greater temperature to one with a lower temperature. To put it another way, heat always transfers from a hotter body to a cooler body.

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Answer:

The temperature of the physics book increases as the chemistry book slides across it.

Explanation:

pluto

The Sun's apparent yearly path across planet Earth's sky against the background stars wouldn't be described as the celestial equator.

A solar system can be defined as a collection of the outer and inner planetary (astronomical) bodies alongside the Moon that are in orbit around the Sun, in slightly elliptical orbits.  

Basically, there are nine (9) planets in the solar system and these include;

Based on astronomical records and information, we can infer and logically deduce that the Sun's apparent yearly path across planet Earth's sky against the background stars wouldn't be described as the celestial equator.

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Its Scalar projection [tex]\sqrt{2}[/tex] and Vector projection 1 (i+0j+k).

We have been given two vectors <1 -1 1> and vector <1 0 1> , we are to find out the scalar and vector projection of vector <1 -1 1> onto vector <1 0 1>

We have vector a = <1 -1 1>  and vector b = <1 0 1>

The scalar projection of vector a onto vector b means the magnitude of resolved component of vector a in the direction of vector b and is given by

The scalar projection of vector a onto vector b = [tex]\frac{vector b . vector a}{|vector b| }[/tex]

                                                                             = [tex]\frac{(1-1+1)(1+0+1)}{\sqrt{1^{2} }+0+1^{2} }[/tex]

                                                                             =[tex]\frac{1^{2} + 1^{2} }\sqrt{2}[/tex]

                                                                             = [tex]\sqrt{2}[/tex]

The Vector projection of vector a onto vector b means the resolved component of vector a in the direction of vector b and is given by

The vector projection of vector a onto vector b .

                                    = [tex]\frac{vector b . vector a}{| vector b|^{2} }[/tex] (i+0j+k)

                                   = [tex]\frac{(1-1+1)(1+0+1)}{{1^{2} }+0+1^{2} }[/tex]. (i+0j+k)

                                   =  [tex]\frac{1^{2} + 1^{2} }{\sqrt{2} }[/tex] (i+0j+k)

                                   = 1 (i+0j+k).

Thus from the above conclusion we can say that scalar projection scalar projection [tex]\sqrt{2}[/tex] and vector projection 1 (i+0j+k).  

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Wavelength is Infinity

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is often defined in wireless systems in metres(m),  centimetres(cm), or millimetres(mm).

A blackbody never approaches zero, hence the wavelength of the highest intensity that a heavenly object may produce is infinite. As a celestial object's temperature rises, its overall energy output increases quickly.

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When a car is coasting downhill, the kinetic and potential energies are increasing and decreasing respectively.

Kinetic energy is the energy possessed by an object because of its motion, equal to one half the mass of the body times the square of its speed.

Potential energy, on the other hand, is the energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).

According to this question, a car going downhill will begin to speed because there is lesser friction. This suggests that the kinetic energy increases while the potential energy decreases.

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When you have two of the same charges along a horizontal line, The electrical field is the greatest the closest it is to the charges. And there will be a zero charge in between the two like charges.

Electric field can be considered as an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge.

The formula of electric field is given as;

E = F /Q

Where,

E is the electric field.

F is a force.

Q is the charge.

The electrical field is the greatest the closest it is to the charges because there will be high electric strength and electric field strength is greatest where the lines are closest together and weakest where lines are furthest apart.  Also , there will be a zero charge in between the two like charges.

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A sound wave leaves the loudspeaker. As it travels, it experiences a temporary increase in wavelength and then returns to its original wavelength.  The sound wave traveled through a helium balloon (helium is less dense than air could explain this change in wavelength

The pattern of disruption brought on by energy moving away from the sound source is known as a sound wave. Longitudinal waves are what makeup sound. This indicates that the direction of energy wave propagation and particle vibrational propagation are parallel. The atoms oscillate when they are put into vibration.

A high-pressure and a low-pressure zone are created in the medium as a result of this constant back and forth action. Compressions and rarefactions, respectively, are terms used to describe these high- and low-pressure zones. The sound waves go from one medium to another as a result of these regions being transmitted to the surrounding media.

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The instantaneous value of a sinusoidal waveform is the value of the alternating function at any particular instant.

The instantaneous value of a 10 ampere peak sine wave at 0, 30, 45, 60, and 180 degree are 0 A, 5 A, 7.07 A, 8.66 A, 0 A respectively.

From the question,

Instantaneous value is given as 10 A

The instantaneous value of a sine waveform is determined by the relation,

Instantaneous value = Peak value x sin θ

Substituting values in the above equation;

For 0°⇒

instantaneous value = 10 x sin 0°

                                = 10 x 0

                                = 0 A

For 30°⇒

instantaneous value = 10 x sin 30°

                                = 10 x (1/2)

                                = 5 A

For 45°⇒

instantaneous value = 10 x sin 45°

                                = 10 x (1/√2)

                                = 10 x 0.707

                                = 7.07 A

For 60° ⇒

instantaneous value = 10 x sin 60°

                                 = 10 x (√3 / 2 )

                                 = 10 x 0.866

                                 = 8.66 A

For 180° ⇒

instantaneous value = 10 x sin 180°

                                = 10 x 0

                                = 0 A

Hence the instantaneous value of a 10 ampere peak sine wave at 0, 30, 45, 60, and 180 degree are 0 A, 5 A, 7.07 A, 8.66 A, 0 A respectively.

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The average current is 0.10 A.

Charge moving through a location on a circuit at a constant rate is called current. When numerous coulombs of charge pass over a wire's cross section in a circuit, it produces a large current. It is not necessary for a wire to be moving at a fast speed in order to have a high current if the charge carriers are tightly packed into the wire. To put it another way, many charge carriers traveling through the cross section is sufficient; they do not need to travel a great distance in a single instant. The amount of charges that flow through a cross section of wire on a circuit, as opposed to how far they travel in a second, is what determines current.

A charge of 12 c passes through an electroplating apparatus in 2. 0 min. what is the average current?

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The feather fell at the same rate as the hammer.

The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second. The Moon's surface gravity is weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

Gravity accelerates both objects at the same rate, but if no other force than gravitational force act on the object , and as we know that air resistance affect the rate of fall but at moon their is no air  resistance. Hence their is no other force acting on the feather and hammer than the gravitation force of moon .

Because the Apollo crew were essentially in a vacuum, there was no air resistance,  the feather fell at the same rate as the hammer. This is exactly what Galileo had concluded hundreds of years before: all objects released together fall at the same rate regardless of mass.

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A satellite is 1200 k above the earth (radius = 6400 k); it completes one revolution in 90min. what is the linear speed?

530.58 (1200+6400)*pi*2/90

The measurement of a moving object's actual distance traveled is called linear speed. Linear speed is the rate of motion of an object along a straight line. In plain English, it is the distance traveled along a linear path in the allotted amount of time.

A pseudovector used in physics to express how quickly the angular location or orientation of an item changes over time is called an angular velocity or rotational velocity  The pseudovector's direction is normal to the instantaneous plane of rotation or angular displacement, and its magnitude corresponds to the object's angular speed, or the rate at which it rotates or revolves. The right-hand rule is a common way to specify the direction of angular velocity.

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The electric potential at certain point is given by,v=-7.5x²-3x ,where v is in volts and x is in meters. then the electric field at that point is -(15x+3).

Given,

The electric potential at certain point is given by,

v=-7.5x²-3x .

where v is in volts and x is in meters.

We know,

electric potential (v) =electric field ×radius

Electric potential is defined as the amount of work needed to move a charge from reference point to the specific point against an electric field.

Also, electric field (E) =dv/dx

Electric field at a point is the force experienced by the unit positive charge placed at that point.

E=d(-7.5x²-3x)/dx=-15x-3

Thus ,the electric field at that point is given by -(15x+3 ).

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Disclaimer:the data in the question is incorrect .here is the complete question .

Question: the electric potential at a certain point is given by v=-(7.5x²+3x).where v is in volts and x is in meters.what is the electric field at that point?

On Titan, the largest moon of of Saturn did the Cassini-Huygens probe land in 2004.

To find the answer, we have to know more about the Cassini-Huygens Mission.

Thus, we can conclude that, on Titan, the largest moon of of Saturn did the Cassini-Huygens probe land in 2004.

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Answer:

Yes

Explanation:

This helps youngsters be empathetic citizens

A town's vitality may be measured by the sensation of a youth service initiative organized by a civic group or community service center. The given statement exists true.

The word "civic organization" directs to any group of people in a community whose primary mission exists to encourage civic, philanthropic, or religious causes.

Youth involvement in the development, monitoring, reporting, and evaluation of devices, tactics, and programs may increase their likelihood of experiencing.

In conclusion, the strength may be displayed in the youth service initiative of a civic organization or a community service center. It showed what young people can do when they enact together. Education and capacity development are two methods that have been shown to improve youth engagement.

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An inductor is connected to an ac generator. As the generator's frequency increases, the current in the inductor decreases.

Inductors and chokes are basically coils or loops of wire that are either wound around a hollow tube former (air cored) or wound around some ferromagnetic material (iron cored) to increase their inductive value called inductance.

Inductors store their energy in the form of a magnetic field that is created when a voltage is applied across the terminals of an inductor.

The growth of the current flowing through the inductor is not instant but is determined by the inductors own self-induced or back emf value. Then for an inductor coil, this back emf voltage VL is proportional to the rate of change of the current flowing through it.

This current will continue to rise until it reaches its maximum steady state condition which is around five time constants when this self-induced back emf has decayed to zero. At this point a steady state current is flowing through the coil, no more back emf is induced to oppose the current flow and therefore, the coil acts more like a short circuit allowing maximum current to flow through it.

However, in an alternating current circuit which contains an AC Inductance, the flow of current through an inductor behaves very differently to that of a steady state DC voltage. Now in an AC circuit, the opposition to the current flowing through the coils windings not only depends upon the inductance of the coil but also the frequency of the applied voltage waveform as it varies from its positive to negative values.

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A gas when a fixed mass is compressed into a smaller volume then b) density increases.

Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.

Mass is the measure of object's inertia, more the mass more the inertia. It is a property of material , so it does not change with place. SI unit is 'kg'. It is a scalar quantity.

Volume is a three-dimensional quantity that is used to measure the capacity of a solid shape. It means the amount of three-dimensional space a closed figure can occupy is measured by its volume.

Density = mass / volume

if mass is fixed, then mass = constant

Density will be inversely related to volume

hence , on compression , volume get decreased but mass is constant hence , density will increase

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use Newton's gravitational law and 2nd law .....

The factor that can have a significant influence on a planet’s surface temperature is its atmosphere.

The atmosphere plays a fundamental role in the Earth planet's temperature because it allows the entry and out of certain types of radiation that may increase the temperature.

The role of the atmosphere in the Earth's temperature is well documented because our temperature is thick and it increases its homeostatic temperature balance.

In conclusion, the factor that alters a planet’s surface temperature is its atmosphere.

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The transistor is a great improvement over the vacuum tube because it is much more energy efficient is a True statement .

A transistor is a miniature semiconductor that  controls current or voltage flow and also amplifies and generates  electrical signals and  can also act as a switch/gate for them.

A vacuum tube, also called a valve in British English, is an electronic device used in many older model radios, television sets, and amplifiers to control electric current flow. The cathode is heated, as in a light bulb, so it will emit electrons. This is called thermionic emission.

Transistors consume lower power consumption , less waste heat, and are highly efficient than equivalent tubes, especially in small-signal circuits.

Vacuum tubes runs with D.C voltage which ranges from 400 V to 500 V. Vacuum tubes require much higher power than transistor device. Hence , are less efficient . This is the main advantages of the transistor.

Another advantage of transistors are that they are portable and lightweight equipment. Can operate on lower-voltage supplies for greater safety, also have lower costs and tighter clearances.

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Answer:

            2500W

Explanation:

                     P = W/t

             As we know that

                  W = mgh

             so:

                     P = mgh/t    

            put values

                      P = (200)(10)(25) / 20

                       P = 2500W