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Mars2501 [29]
3 years ago
7

The planet earth orbits around the sun and also spins around its own axis. True or False

Physics
1 answer:
posledela3 years ago
5 0

Answer:

This is True

Explanation: The Earth rotates around its own axis, which results in day changing to night and back again. The Earth actually revolves around, or orbits, the sun. One revolution around the sun takes the Earth about 365 days, or one year. Forces at work in the solar system keep the Earth, as well as the other planets, locked into predictable orbits around the sun.

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4 years ago
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A motorcycle, which has an initial linear speed of 6.3 m/s, decelerates to a speed of 1.9 m/s in 4.6 s. Each wheel has a radius
valentina_108 [34]

Answer:

Explanation:

Given

initial velocity of motorcycle u=6.3\ m/s

final velocity v=1.9\ m/s

time taken t=4.6\ s

radius of wheel r=0.68\ m

using v=u+at

where a=acceleration

1.9=6.3+a\times 4.6

a=-0.956\ m/s^2

angular acceleration \alpha =\frac{a}{r}

\alpha =\frac{-0.956}{0.68}=-1.406\ rad/s^2

Displacement=average\ velocity\times time

Displacement=\frac{u+v}{2}\times t

Displacement=\frac{1.9+6.3}{2}\times 4.6=18.86\ m

Angular displacement \theta =\frac{Linear\ displacement}{radius}

Angular displacement \theta =\frac{18.86}{0.68}=27.73\ rad

6 0
4 years ago
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