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zalisa [80]
3 years ago
13

1. An object is moving to the right while a force directed to the left acts on the object. Is this force

Physics
1 answer:
Alex Ar [27]3 years ago
8 0

Answer:

Force is doing negative work here

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Can power be negative in physics? I am doing a lab in which I run down the stairs as quickly as possible. They are 5.4m tall and
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Answer:

Yes.

Explanation:

A negative power would just represent a loss of power. So in your case it lost -1252.16 W

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A (blank) is a point on a standing wave that appears to be stationary
Vikentia [17]

Hi! Your answer would be "node"

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A cannonball is fired perfectly horizontally from the top of a 210 m tall cliff. It is fired with an initial velocity of 50 m/s.
pochemuha

Answer:

the horizontal distance covered by the cannonball before it hits the ground is 327.5 m

Explanation:

Given;

height of the cliff, h = 210 m

initial horizontal velocity of the cannonball, Ux = 50 m/s

initial vertical velocity of the cannonball, Uy = 0

The time for the cannonball to reach the ground is calculated as;

h = u_yt - \frac{1}{2} gt^2\\\\h = 0 - \frac{1}{2} gt^2\\\\t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 210}{9.8} }\\\\t  = 6.55 \ s

The horizontal distance covered by the cannonball before it hits the ground is calculated as;

X = U_x \times \ t\\\\X = 50 \times \ 6.55\\\\X = 327.5 \ m

Therefore, the horizontal distance covered by the cannonball before it hits the ground is 327.5 m

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How do climate differences affect the movement at the Mariana Trench
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It pushes the currents to opposite sides
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A heat source could be considered a source of pollution Please select the best answer from the choices provided
jeyben [28]

The answer is true, is called Thermal pollotion:).

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