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serg [7]
3 years ago
7

Chewy travels an average of 22 mph, how many hours does it take him to cover a 110 mike course?

Physics
1 answer:
anzhelika [568]3 years ago
5 0
That would be 110/22, which is 5 hours
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A steady beam of alpha particles (q = + 2e, mass m = 6.68 × 10-27 kg) traveling with constant kinetic energy 22 MeV carries a cu
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Answer:

Explanation:

q = 2e = 3.2 x 10^-19 C

mass, m = 6.68 x 10^-27 kg

Kinetic energy, K = 22 MeV

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(a) time, t = 2.8 s

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N x 2e = q

N x 3.2 x 10^-19 = i t

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(b) Length, L = 16 cm = 0.16 m

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Which of the following expressions will have units of kg⋅m/s2? Select all that apply, where x is position, v is velocity, m is m
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Answer: m \frac{d}{dt}v_{(t)}

Explanation:

In the image  attached with this answer are shown the given options from which only one is correct.

The correct expression is:

m \frac{d}{dt}v_{(t)}

Because, if we derive velocity v_{t} with respect to time t we will have acceleration a, hence:

m \frac{d}{dt}v_{(t)}=m.a

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