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kozerog [31]
3 years ago
6

Could someone please help me

Physics
1 answer:
BaLLatris [955]3 years ago
3 0

Answer:

the size of the shadow will be smaller due to smaller hands

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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
il63 [147K]

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
You are writing a report about space travel. Where would be the best place to find information? (2 points)
Harrizon [31]

Answer: Contact the National Aeronautics and Space Association

Explanation:

The National Aeronautics and Space Association is an independent organization in US which aims to enable a safe, secure, efficient space journey and launch of new satellites, spacecraft beyond the earth's orbit. It can give better information for the space travel already conducted by the astronauts. Thus will help in writing the report as it is the best place to find the information.  

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2 years ago
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a car increases its speed as it moves across the floor. which form of energy is increasing for the car?
zavuch27 [327]

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kinetic

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Red clothes will---the red light.A)Reflect B)refract C)Absorb D)transmission E)Dispersion
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Red clothes look red  because they REFLECT the red light, and absorb light of other colors.

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How long did Skylab orbit the earth?
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for abt 36 seconds

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