Which turbine takes the lesser amount of time to rotate through 1. 0 radian of angular displacement?

Einstein's special theory of relativity explains that the electric and magnetic fields are both can formulate together in mathematically.

It is given Einstein's special theory of relativity.

It is find the Einstein's special theory of relativity explains the perpendicular behavior of moving charges without recourse to invoking the concept of a magnetic field.

As we know that one charge creates a field and its that field that actually exerts a force on the other charge. Here we it gives the relationship of two fields like electric field and magnetic field and gives the formula for electromagnetic objects.

Special relativity fixes the problem by the points that the magnetic force in one frame of reference easily be an electric force in other and also some of the combination of them in a frame.

Thus, Einstein's special theory of relativity explains that the electric and magnetic fields are both can formulae together in mathematically.

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Answer:

C. tiny particles called charges flowing through the wires.

Explanation:

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.

Hope it helps!

Answer:

c

Explanation:

electric current is tiny particles called charges flowing through the wires
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In series combination less rate of joule hating should be observed as compared to when connected in parallel combination .

Joule heating, also known as resistive, resistance, or Ohmic heating, is the process by which the passage of an electric current through a conductor produces heat.

Joule's first law states that the power of heating generated by an electrical conductor equals the product of its resistance and the square of the current:

When two or more resistors are connected end to end consecutively, they are said to be connected in series combination. The combined resistance of any number of resistances connected in series is equal to the sum of the individual resistances.

When two or more resistances are connected between the same two points, they are said to be connected in parallel combination. The reciprocal of the combined resistance of a number of resistances connected in parallel is equal to the sum of the reciprocals of all the individual resistances.

Rate of joule heating can be calculated by the formula

Power = [tex]V^{2}[/tex] / R

V = voltage

R = resistance

When both are connected in series than their equivalent resistance will be more as compared to when they are connected in parallel.

Power is inversely related to resistance , if voltage is constant

In series combination less rate of joule hating should be observed as compared to when connected in parallel

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Answer:

True

Explanation:

Driving safely at night requires seeing well not only under low light, but also requires drivers to see low-contrast objects.

Explanation:

1/R = 1/R1 + 1/ R2

1/R = 1/960 + 1/640

1/R = 5 / 1920

So , Req = 384 + R3

Req = 384 + 180

[tex]\huge\red{A}\pink{N}\orange{S}{W}\blue{E}\green{R} [/tex]

Vmax = 1.258 m/s

Maximum velocity of any point on the string is 1.258 m/s.

Maximum velocity is given by,

Vmax = Aω

where,

V = velocity

A = amplitude

ω = angular displacement

ω is given by,

ω = 2[tex]\pi[/tex]f

where f = frequency

ω = 2[tex]\pi[/tex]f

   = 2*3.147*100

   = 629.4 rad

A = amplitude = 2mm

Vmax = Aω

         = 2 ×[tex]10^{-3}[/tex] × 629.4

         = 1.258 m/s

Maximum velocity = Vmax =  1.258 m/s

Maximum velocity of any point on the string is 1.258 m/s.

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Answer:

The pressure exerted by a women wearing shoes with pointed heels is much greater than what an elephant with one foot can exert on ground. This because of lesser area of contact of pointed heels.

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Answer:

A

Explanation:

accel =  Δv /  Δ t  =  12/6 = 2 m/s^2

The total magnification will be 200x.

It quantifies the comparison of the image's size to that of the object's size. In terms of how big or little the picture is produced, it informs us about the image. The height of the picture divided by the height of the object is known as magnification. m=hiho.

Objective lens - An essential component of the microscope's optics is the objective lens. The sample, specimen, or item being examined is situated close to the microscope's objective. It plays a crucial part in imaging since it creates the initial magnified picture of the sample.

Ocular lens - The component of the microscope known as the eyepiece, or ocular lens, is responsible for enlarging the picture created by the objective so that it can be viewed by the human eye.

20x objective lens was used by specimen

10x ocular lens was also used by him.

we have to find the total magnification.

For calculating the total magnification we 'll simply do multiplication

Total Magnification = 20 × 10x

Total Magnification = 200x

So , the total magnification will be 200x .

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The answer is (d) class

One or more objects may be created from a class.

Class objects normally have methods that perform useful operations on their data.

What is class?

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One or more objects may be created from a class.

Class objects contains methods which perform useful operations on their data.

A class in object-oriented programming refers to a template specification of the methods and variables in a a type of object.

An object is a specific instance of a class that holds real values rather than variables.

The class is a key concept in object-oriented programming.

We may also construct a class object and use it in another class. It is frequently used to improve the structure of class.

Hence, one or more objects may be created from a class.

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8.16m is the required height, a 5kg stone need to be raised.

One sort of potential energy is gravitational potential energy, which is equal to the product of the object's mass (m), the gravitational acceleration (g), and the object's height (h) as measured in relation to the ground's surface (the body).

We obtain the formula by considering the work done in raising a mass m through a height h.

Work in elevating mass m through height h is equal to force times distance.

The force must be greater than the mass m's weight, hence F = mg.

Work done = mgh = gravitational potential energy

Energy =  Mass of the object × gravitational acceleration × height.

Mass of the stone = 5kg

Equating ;

∴ 400 J = 5 kg × 9.8 m/s² × height

  Height = 8.16 m

Therefore, 8.16m is the required height.

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Answer:

distance and the amount of the force

Explanation:

moment = f x d

Answer:

141 J  

Explanation:

The lowest sig digits in a calculation determine the sig dig of the answer

The temps are listed with 3 significant digits and the spec heat is 3 sig digits  (the mass has 4 sig digs) .....so answer will need 3 digits

31.91 g   * .903 J/g-C  *  (26.1 - 21.2 C) = 141 J   (three sig dig)

180° is the phase angle. An AC source is linked in series with a resistor, an inductor, and a capacitor. Inductive reactance rises with frequency because an alternating current has a time-averaged rate of change that is proportional to frequency.

Impedance of RLC series circuit

2= P²R² + (XL-X₁) ²

Here &         4 tan² (x₁=X₂) $ R +1 180° tan (XL R tan 180° = XL-X C R XL-XC R ..

                   XL-XC R X₁-X ₁ = 0 XL = Xc 2 = √√√ R² + 0² 2 2 = R

Resonance is the condition in question here. When induction occurs as well as capacitive reactances equal are equivalent but cancel due to the fact that they have degrees of phase separation. During resonance, Impedance is very low.

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Beta decay forms a daughter nucleus with a different atomic number than the parent nucleus. The correct answer is option B.

A nucleus loses an electron when it emits the beta particles. The parent and daughter nuclei share the same atomic mass because the mass of an electron is so much less than that of a proton or neutron. The offspring nucleus has an atomic number that is one higher than the parent nucleus.

There are mainly two types of beta decay: beta plus (positron decay) and beta minus (electron decay). The daughter atomic number reduces by one after beta plus decay (the nucleus loses one positive charge) and rises by one after beta minus decay (the nucleus loses one negative charge).

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The frequency of the green light emitted by a hydrogen atom with a wavelength of 486. 1 nm will be 6.17 * [tex]10^{-14}[/tex] Hz

The wavelength of light is the distance between corresponding points in two adjacent light cycles, and the frequency of light is the number of cycles of light that pass a given point in one second.

Visible light falls in the range of the EM spectrum between infrared (IR) and ultraviolet (UV). It has frequencies of about 4 × 1014 to 8 × 1014 cycles per second, or hertz (Hz) and wavelengths of about 740 nanometers (nm) or 2.9 × 10−5 inches, to 380 nm (1.5 × 10−5 inches)

f = c/lambda

where

f = frequency of light = ?

lambda = wavelength of light =  486. 1 nm = 486.1 * [tex]10^{-9}[/tex] m

c = speed of light = 3 * [tex]10^{8}[/tex] m/s

f = 3 * [tex]10^{8}[/tex]  / 486.1 * [tex]10^{-9}[/tex] = 6.17 * [tex]10^{-14}[/tex] Hz

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Consider the 5-bit generator, g=10011, and suppose that d has the value 1010101110. Then the value of r is 0100.

We obtain 1011011100 when we divide 10011 by 1010101010 0000, with a remainder of R=0100 in 5-bit generator

A generator converts mechanical energy into electrical energy. When you are not linked to the power grid, it supplies electricity to your devices and appliances. Generators are critical safety equipment during natural disasters like hurricanes and snowstorms, as well as any power outage.

It operates on the principle of the faraday law of electromagnetic induction. According to the faradays law, whenever a conductor is placed in a fluctuating magnetic field, EMF is induced and thus induced. A standby generator can power a medium-sized home for up to 3,000 hours on average, while it is not suggested that you run a generator for more than 500 hours continually. Although both EMF and terminal potential difference (V) are measured in volts, they are not the same thing.

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The inductance of the inductor is 35.8 mH.

What is inductance?

Inductance, which would be defined as the proportion of voltage to current change rate, is what distinguishes an inductor from other electrical devices. The magnetic field induced on the coil causes inductance. The coil's form is one of the many elements that affect it.

Calculation:

Provided that,

voltage = 120 V

frequency = 1000Hz

capacitor (C) = 2.00μF

current = 0.680 A

We have to find out the inductance of that inductor by using the formula of the current,

I = V/Z

Z = [tex]\sqrt{R^{2} +(Lw - \frac{1}{Cw)^{2} } }[/tex]

Now putting the value of Z into this equation we get:

I = [tex]\frac{V}{\sqrt{R^{2}+(Lw - \frac{1}{Cw})^{2} } }[/tex]

0.680 = [tex]\frac{120}{\sqrt{100^{2}+(L* 2\pi *1000 - \frac{1}{2*10^{-6}*2\pi *1000 })^{2} } }[/tex]

L = 35.8 mH

Therefore it is concluded that the inductance of the inductor is 35.8 mH.

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Answer:

The background radiation came from the heat of the universe, with a peak corresponding to the temperature of the universe.

A charge q = -10 µc experiences an electrostatic force of 35 mn to the left.

The magnitude of electric field will be = 35 * [tex]10^{2}[/tex] N/C

Direction of the electric field will be from left to right

The force exerted by a charged body on another charged or uncharged body is called electrostatic force. This force is known as non-contact force because these forces comes into play even when the bodies are not in contact with each other.

Electric field, an electric property associated with each point in space when charge is present in any form. The magnitude and direction of the electric field are expressed by the value of E, called electric field strength or electric field intensity or simply the electric field.

given

q ( charge ) = -10 µc

Electrostatic force  = 35 mN

Electric field = Force on charge  / charge

                    = 35 * [tex]10^{-3}[/tex] / (-10 * [tex]10^{-6}[/tex])

                    = - 35 * [tex]10^{2}[/tex] N/C

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The distance between PQwill be 10,time taken to cover PQ will be 0.25sec and time taken to cover PR will be 3sec.

What is uniform deceleration?

Uniform deceleration is when velocity decrease by equal intervals of time .

Given ,

Velocity at P is 40 m/ s,

Velocity at Q is 20 m/ s

Distance between QR will be 50m.

let the whole distance between PR will be x,

so time taken of PQ, equating both times of PQ and QR we will get this,

x-50/40 = 50/ 20

after calculating ,

x = 60m , this the distance of whole straight line

60-50=. 10 m

the distance between PQ will be 10

2) time taken to cover PQ

. V= d/ t

 t= 0.25s

3) time taken to cover PR

20=60/ t

t= 3sec.

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1. PQ=150m.

2. PQ: [tex]t=5s[/tex]

3. QR: [tex]t=5s[/tex]

The vector quantity velocity (v), denoted by the equation v = s/t, quantifies displacement (or change in position, s) over the change in time (t). Speed (or rate, r) is a scalar number, denoted by the equation r = d/t, that quantifies the distance traveled (d) over the change in time (t).

QR=50m.

[tex]V_{Q} (u)=20ms^{-1} ,V_{R} v[/tex]

[tex]v^{2} =u^{2}+2as[/tex]

[tex]0=20^{2} +2a*50[/tex]

100a=-400

[tex]a=-4ms^{-2}[/tex]

1. Distance PQ:

[tex]u_{p} (u)=40msx^{-1} , v_{Q (v)=20ms^{-1}[/tex]

[tex]v^{2} =u^{2} +2as[/tex]

[tex]20^{2} =40^{2} -2*4s[/tex]

400=1600-400

8s=1600-400

[tex]s=\frac{1200}{8} =150m[/tex]

PQ=150m

2.Time taken to cover PQ:

v=u+at

20=40-4t

4t=40-20

[tex]t=\frac{20}{4}=5s[/tex]

3. Time taken to cover PR​:

v=u+at

0=20-4t

[tex]t=\frac{20}{4}=5s[/tex]

1. PQ=150m.

2. PQ: [tex]t=5s[/tex]

3. QR: [tex]t=5s[/tex]

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The energy of the red light emitted by a neon atom is 2.827*10^-19J

Light produces photons which might be small packets of power. as the atoms of an object are heated, it results within the manufacturing of photons. The electrons locate pleasure from the warmth and produce extra energy. This power emits inside the shape of a photon, and extra photons are released because the cloth becomes hotter.

The SI unit of wavelength is metre typically denoted as m. at the same time as measuring wavelength the multiples or fractions of a metre is also used. extensively, exponential powers of 10 are used while wavelengths are of a huge property. while there are shorter wavelengths they're expressed as negative exponential.

c=3*10^8 h=6.626*10^-34

wavelength= 703.2*10^-9m

E=2.827*10^-19J

Hence energy of the red light is 2.827*10^-19J.

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The capacity for doing work that a body possesses because of its position or configuration is known as Potential Energy.

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Total rate at which electrical energy is dissipated

is 5W

Given:

Resistance = 5 ohm

To Find:

total rate at which electrical energy is dissipated

Solution:

The power dissipated in a resistor can be obtained by Ohm's law as P=VXI, where V = voltage and I = current. So, energy dissipated is given by P x t (time)

P = (I)^2R

Let's assume current given is 1

P = 1 x 5

P = 5 W

So, total rate at which electrical energy is dissipated is 5W

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Answer:

20 m/s

Explanation:

Use the position/displacement formula to find out how long the ball is in the air:

(distance) = (initial velocity)*(time) + (1/2)*(acceleration)*(time)^2

20 = 0*t + 1/2*10*t^2

t^2 = 4

t = 2 seconds

Use the velocity formula:

(final velocity) = (initial velocity) + (acceleration)*(time)

Vf = 0 + 10*2

Vf = 20 m/s

Answer:

Explanation:

MLT^-2

.....

Answer:

Human beings can see "visible" light.

Visible light is considered to be between 4000-7000 Angstroms or

400-700 millimicrons

1 Angstron = 1E-10 m

1 Millimicron = 10 Angstroms

critical angle = [tex]i_{cr}[/tex] = 73.7°

total internal reflection = [tex]\alpha[/tex]cr = 54.58°

Given:

refractive index of core, [tex]n_{core}[/tex] = 1.46

refractive index of clad, [tex]n_{clad}[/tex] = 1.4

The incidence angle that causes the refraction angle to be equal to that at that angle of incidence is known as the critical angle.

The incidence angle needs to be greater than the critical angle for Total Internal Reflection to happen.

Now, we know that the critical angle = θcr is given by:

sinθcr = [tex]\frac{n_{clad} }{n_{core} }[/tex]

θcr = [tex]sin^{-1}[/tex] ([tex]\frac{n_{clad} }{n_{core} }[/tex])

θcr = [tex]sin^{-1}[/tex] ([tex]\frac{1.4}{1.46}[/tex])

= [tex]sin^{-1}[/tex](0.96)

=73.7° = [tex]i_{cr}[/tex]

Now for [tex]\alpha[/tex]cr:

[tex]sini_{cr}[/tex]/[tex]sin\alpha _{cr}[/tex] = 1/[tex]n_{core}[/tex]

[tex]sin\alpha _{cr}[/tex] = sin(90° - 73.7°) × 1.46

[tex]sin\alpha _{cr}[/tex] = sin(16.3°) × 1.46

          =-0.558 × 1.46

          =-0.815

[tex]\alpha _{cr}[/tex] = [tex]sin^{-1}[/tex](0.815)

      = 54.58°

Total internal reflection means that none of the light that might conceivably travel away from this surface is refracted and that all of it is reflected.

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Magnetic field strength of the field is  4.2 × [tex]10^{-4}[/tex] T

The region of space where magnetic force is experienced is known as magnetic field.

The force on a particle of charge q moving at speed v at an angle Ф to a uniform magnetic field of flux density B is given as

F = BqvsinФ

Given that a proton travels with a speed of 8. 34×10^5 m/s at an angle of 32. 3° with the direction of a magnetic field. the field exerts a force of 3. 00×10^−17 N on the proton. What is the strength of the field?

The parameters are;

Substitute all the parameters into the formula

F = BqvsinФ

3.0 × [tex]10^{-17}[/tex] = ( 1.6 x [tex]10^{-19}[/tex]  x 8.34 x [tex]10^{5}[/tex] x sin 32.3 ) B

3.0 × [tex]10^{-17}[/tex]  = 7.13 × [tex]10^{-14}[/tex] B

Make B the subject of formula

B = 3.0 × [tex]10^{-17}[/tex] / 7.13 × [tex]10^{-14}[/tex]

B = 4.2 × [tex]10^{-4}[/tex] T

Therefore, Magnetic field strength of the field is  4.2 × [tex]10^{-4}[/tex] T

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Are there components of the velocity that are not determined by the measurement of the force?. Yes

Due to the possibility of velocities pointing diagonally, two-dimensional motion is more complicated than one-dimensional motion. A baseball, for instance, could be going diagonally while also moving both horizontally and vertically. To make our calculations simpler, we divide the velocity vector of the baseball into two independent horizontal start subscript and end subscript directions.

It is challenging to attempt to solve for both the horizontal and vertical directions of a baseball in a single equation; it is preferable to use a divide-and-conquer strategy.

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