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Bess [88]
3 years ago
10

What velocity must a 1210 kg car have in order to have the same momentum as a pickup truck

Physics
1 answer:
Mariulka [41]3 years ago
6 0

Answer: 46.5 m/s

Explanation:

Momentum = mass(m) × velocity (v)

momentum of car = momentum of truck

1210 × v = 2250 × 25

v = 46.5 m/s

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A high speed train is traveling at a speed of 44.7 m/s when the engineer sounds the 415 Hz warning horn. The speed of sound is 3
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Answer:

Explanation:

Speed of the source of sound = v = 44.7 m/s

Speed of sound = V = 343 m/s

a) Apparent  frequency as the train approaches = f =  [V /(V -v) ] × f

= [343 / (343 - 44.7) ] × 415  = 477.18 Hz

Wave length =  λ = v / f = 343 / 477.18 = 0.719 m

b) Frequency heard as the train leaves = f ' =  [V / ( V + v) ] f

                                                                     = [343 / { 343 + 44.7 ) ] x 415

                                                                      = 367.2 Hz

Wavelength when leaving = v / f = 343 / 367.2 = 0.934 m

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3 years ago
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The answer is b because the sun's surface temperature is 5,778 K.
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In which place moutain or terai,the value of g is more and why?​
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This is a form of energy representing the motion of the molecules which make up an object. A. Thermal Energy B. Kinetic Energy C
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Answer:

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