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djyliett [7]
3 years ago
15

A 4.0 kg shot put is thrown with 30 N of force. What is its acceleration?

Physics
1 answer:
weeeeeb [17]3 years ago
7 0

7.5 m/s

a = F ÷ m

a = (30 N) ÷ (4.0 kg)

a = 7.5 m/s2

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What is the awnser to Blank occurs when a substance changes from a liquid to a gas
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The energy of a photon of light is __________ proportional to its frequency and __________ proportional to its wavelength.
icang [17]

Answer:

D) directly, inversely

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The energy of a photon of light is directly proportional to its frequency and inversely proportional to its wavelength.

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             Energy   =  h x f

                      where h is the Planck's constant

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                   Since c  = f ∧

where f is the frequency of the wave

           ∧ is the wavelength of the wave

           c is the speed of light

So;

                 f  = c/∧

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                E  = \frac{h c}{wavelength}

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6 0
3 years ago
At what speed will a box be falling at a time t = 0.75 s after being dropped?
IRINA_888 [86]

Explanation:

Initial speed(u)= 0 m/s (Ball is dropped)

time(t)= 0.75 s

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Final speed(v)= u+at

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v=7.5 m/s

Speed is 7.5 m/s

8 0
3 years ago
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