4 years ago

The apparent backward motion of a planet along the celestial sphere is called ____________ motion.

Physics

1 answer:

motikmotik4 years ago

4 0

Answer:

Retrograde

Explanation:

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Answer:

Our modern ideas about government were influenced by many different ideas and traditions. The biggest influence came from their British heritage. (Remember the colonists WERE British until the American Revolution!)

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3 years ago

A toy rocket moving vertically upward passes by a 2.0-m-high window whose sill is 8.0 m above the ground. The rocket takes 0.15

sveta [45]

Answer:

$v_i = 18.86 m/s$

Explanation:

As we know that the speed of the rocket is v1 and v2 at the bottom and top of the window

then we will have

$d = (\frac{v_1 + v_2}{2}) t$

$2 = (\frac{v_1 + v_2}{2})(0.15)$

$26.67 m/s = v_1 + v_2$

also we know that

$v_2 - v_1 = (-9.81)(t)$

$v_2 - v_1 = (-9.81)(0.15) = -1.47$

now we have

$v_2 = 12.6$

also we have

$v_1 = 14.1 m/s$

now if the sill of the window is at height 8 m from the ground then we have

$v_1^2 - v_i^2 = 2 a h$

$(14.1^2) - v_i^2 = 2(-9.81)(8)$

$v_i = 18.86 m/s$

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4 years ago

Earth's moon orbits Earth at a mean distance of 382,508,576 m. What is the moon's orbital speed? Earth's mass is 5.972x1024 kg.

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Answer:

I think 1.022 or 1

Explanation:

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2 years ago

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Answer:

What?

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4 years ago

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3 years ago