3 years ago

The sun, moon, planets and stars rise in the and set in the .

Physics

1 answer:

Masja [62]3 years ago

7 0

The sun, moon, planets and stars rise in the EAST and set in the WEST.

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A 1.5-kg block slides at rest starts sliding down a snow-covered hill Point A, which has an altitude of 10 m. There is no fricti

damaskus [11]

Answer:

the speed of the block when it reaches point B is 14 m/s

Explanation:

Given that:

mass of the block slides = 1.5 - kg

height = 10 m

Force constant = 200 N/m

distance of rough surface patch = 20 m

coefficient of kinetic friction = 0.15

In order to determine the speed of the block when it reaches point B.

We consider the equation for the energy conservation in the system which can be represented by:

$\dfrac{1}{2}mv^2=mgh$

$\dfrac{1}{2}v^2=gh$

$v^2=2 \times g \times h$

$v^2=2 \times 9.8 \times 10$

$v=\sqrt{2 \times 9.8 \times 10$

$v=\sqrt{196$

v = 14 m/s

Thus; the speed of the block when it reaches point B is 14 m/s

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3 years ago

Assume you are riding in a plane that is moving at a speed of 600kmh relative to the ground. If you walk from the back to the fr

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C. 600 km/h is the answer for this question

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HELP PLS .. The half-life of potassium-44 is 22 minutes. It decays into calcium-44. After

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Answer:

1/4

Explanation:

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What are the two main categories of ecosystems?

snow_lady [41]

It would be autotroph and hetrotroph

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3 years ago

Hot air balloon A is rising upward a rate of 5.0 m/s. A passenger aboard balloon A observes balloon B rising upward at a relativ

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Velocity B (relative to the A) = Velocity B (relative to the ground) - Velocity A (relative to the ground)

Velocity B (relative to the ground) = Velocity B (relative to the A) + Velocity A (relative to the ground)

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Since both go up in the same direction, we should use the minus sign for relative velocity.

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4 years ago

The sun, moon, planets and stars rise in the ____ and set in the ____.

The sun, moon, planets and stars rise in the and set in the .