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alexgriva [62]
3 years ago
15

A 205-kg crate is pushed horizontally with a force of 720 n. if the coefficient of friction is 0.20, calculate the acceleration

of the crate. m/s2
Physics
1 answer:
Marat540 [252]3 years ago
6 0
Google it...............
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Most of the EM waves from the sun that reach Earth are infrared waves, visible light, and UV radiation.

Explanation:

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When blue litmus paper is dipped in acid the paper turns red.

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What happens to the radiation coming from the Sun and heading towards Earth?
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7 0
2 years ago
A phonograph record accelerates from rest to 28.0 rpm in 5.73 s.
Arturiano [62]

Answer:

a) \alpha=0.5117\ rad.s^{-2}

b) \theta=8.4\ rad

Explanation:

Given:

  • initial rotational speed of phonograph, \omega_i=0\ rad.s^{-1}
  • final rotational speed of phonograph, N_f=28\ rpm \Rightarrow \omega_f=2\pi\times\frac{28}{60} =2.932\ rad.s^{-1}
  • time taken for the acceleration, t=5.73\ s

a)

Now angular acceleration:

\alpha=\frac{\omega_f-\omega_i}{t}

\alpha=\frac{2.932-0}{5.73}

\alpha=0.5117\ rad.s^{-2}

b)

Using eq. of motion:

\theta=\omega_i.t+\frac{1}{2} \alpha.t^2

\theta=0+\frac{1}{2}\times 0.5117\times 5.73^2

\theta=8.4\ rad

5 0
3 years ago
Help!!Help!!Help!!Help!!
DerKrebs [107]

Answer:

y=8

Explanation:

every time you multiply x by 3 you divide y by 3.

x=2, multiply it by 3: x=6

y=24, divide it by 3: y=8

8 0
2 years ago
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