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vichka [17]
3 years ago
13

In the future, an experimental spacecraft leaves space dock for a test flight. After flying in a very large circle at constant s

peed, the spacecraft returns to the space dock. The observers at the stationary space dock note that the flight lasted for 7.24 hours. However, the clock aboard the spacecraft records only 3.69 hours passing during the flight. at what speed did the spacecraft fly?
Physics
1 answer:
Fantom [35]3 years ago
5 0

Answer:

2.58 x 10⁸ m/s

Explanation:

Time dilation fomula will be applicable here, which is given below.

t = \frac{T}{\left ( 1-\frac{v^2}{c^2} \right )^\frac{1}{2}}

Where T is dilated time or time observed by clock in motion , t is stationary time , v is velocity of clock in motion and c is velocity of light .

c is 3 times 10⁸ ms⁻¹ , T is 7.24 h , t is 3.69 h. Put these values in the formula

7.24 = \frac{3.69}{\left ( 1-\frac{v^2}{c^2} \right )^\frac{1}{2}}\\

\frac{v^2}{c^2}=0.744\\\\

v=2.58\times 10^8

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4 years ago
Which of the following statements are true?
Tems11 [23]

Answer:

1) A time-varying magnetic field will produce an electric field.

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Explanation:

1) A time-varying magnetic field will produce an electric field.

TRUE

time varying magnetic field will produce electric field which is given as

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Time varying electric field will produce magnetic field given as

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3 0
3 years ago
An AC generator has an output rms voltage of 100.0 V at a frequency of 42.0 Hz. If the generator is connected across a 45.0-mH i
Rus_ich [418]

Answer:

(a) 11.8692‬ ohm

(b) 12.447 A

(c) 17.6 A

Explanation:

a)  inductive reactance Z = L Ω

    = L x 2π x F

    = 45.0 x 10⁻³ x 2(3.14) x 42

    = 11.8692‬ ohm

b) rms current

    = 100 / 8.034

    = 12.447 A

c) maximum current in the circuit

    = I eff x rac2

    = 12.447 x 1.414

    = 17.6 A

4 0
4 years ago
What does the ideal gas law allow a scientist to calculate that the other gas laws do not?
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The ideal gas law allows a scientist to calculate the number of moles that the other gas laws do not. The ideal gas law is given as

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rearranging the equation by dividing both side by "RT", we get

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n = PV/(RT)

inserting the values of pressure, volume and temperature, we get number of moles.

7 0
3 years ago
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lutik1710 [3]
The average velocity of Sandy is given by the total distance covered S divided by the total time taken t:
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The total distance covered is
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while the total time taken is 2 hours + half an hour (for the rest) + 1 hour and half, so
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Therefore, the average velocity is 
v= \frac{S}{t}= \frac{300 km}{4 h}=75 km/h
0 0
3 years ago
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