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jolli1 [7]
3 years ago
5

An observer views four identical clocks that are traveling at speeds close to the speed of light. Can observations of the passag

e of time be used to rank the clocks according to their speeds?
A. Yes. The clock that shows the fastest passage of time is traveling the fastest.

B. Yes. The clock that shows the slowest passage of time is traveling the fastest.

C. No. The passage of time on the four clocks should be the same, regardless of speed.

D. No. The passage of time on each clock depends on the frame of reference of the observer.
Physics
2 answers:
natta225 [31]3 years ago
8 0

Answer:

B. Yes. The clock that shows the slowest passage of time is traveling the fastest.

Explanation:

kvv77 [185]3 years ago
4 0
The correct option is B.
According to Einstein, in his special theory of relativity, a moving clock runs more slowly as its velocity increases until it gets to the speed of light and it stops running altogether. Thus, the clock that is travelling the fastest will have the slowest passage of time while the one that is travelling the slowest will have the fastest passage of time.
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Polarized light is incident on three polarizing filters in a row. The initial intensity of the light is 4 W/m^2. The first filte
DiKsa [7]

Answer:

45°

Explanation:

I = Polarized light after 3 filter = 0.5 W/m²

I_0 = Initial light intensity = 4 W/m²

The intensity of polarized light is given by

I=I_0cos^2Acos^245cos^245\\\Rightarrow A=cos^{-1}\sqrt{\dfrac{I}{I_0cos^245cos^245}}\\\Rightarrow A=cos^{-1}\sqrt{\dfrac{0.5}{4\times cos^245\times cos^245}}\\\Rightarrow A=45^{\circ}

Hence, the angle relative to the vertical was the light initially polarized is 45°

4 0
3 years ago
You are pushing a cart at the grocery store. The cart is speeding up. a) When your friend drops a 50 pound bag of dog food into
ipn [44]

Answer:

The acceleration will decrease/reduce

Explanation:

Newton in his second law of motion states that the acceleration of an object is dependent on the force and mass applied on the object. Using the equation as follows:

F = m × a

Where;

F = force (N)

m = mass (kg)

a = acceleration (m/s²)

Acceleration (a) is directly proportional to the force (F) applied but inversely proportional to the mass (m).

According to this question, a friend drops 50 pounds of dog food into a cart being pushed with speed. This means that the mass/weight of the cart was increased. Since the acceleration is inversely proportional to the mass of an object, this means that the acceleration of the cart will DECREASE/REDUCE as the mass increases.

6 0
3 years ago
Prove- s=UT+1/2 of 2​
vivado [14]

Answer:

I hope it helped U......

6 0
3 years ago
Un cuerpo cuya masa es de 20 kg se lleva primero a la luna y luego a marte. Teniendo en cuenta el factor que liga masa y peso en
grandymaker [24]

Answer:

W = 76 N

Explanation:

In this exercise you are asked to find the weight of the body.

Mass is a quantity that is invariant, it measures the same everywhere, the weight depends on where it is measured, a simple way to find the weight of a body is

          W = g m

where g is the constant of the place, in this case we have the weight of the body on Mars and its mass which is constant on Earth and on Mars

            W = 3.8 20

            W = 76 N

7 0
3 years ago
If the frequency of a system undergoing simple harmonic motion doubles, by what factor does the maximum value of acceleration ch
faltersainse [42]

Answer:

the answers the correct one is a  4

Explanation:

The centripetal acceleration is by

           a = v² / R

angular and linear velocities are related

           v = w R

let's substitute

           a = w² R

for initial condition

           a₀ = w₀² R

suppose the initial angular velocity is wo, suppose the angular velocity doubles

           a = (2w₀)² R

           a = 4 (w₀² R)

           a = 4 a₀

when reviewing the answers the correct one is a

6 0
3 years ago
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