4 years ago

Most ocean waves obtain their energy and motion from _____.

1 answer:

4 0

Centrifugal force of the earth's rotation as well as tidal forces caused by the moon's orbit and the sun's gravitational pull.

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Which of the following refers to the increasing size of deserts worldwide? A. disintegration B. desertification C. decomposition

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the answer is B. desertification

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4 years ago

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Which gives the kinetic energy of a descending yo-yo?

matrenka [14]

A five pushing and letting go of the yoyo

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3 years ago

a runner goes from 5 m/s to a stop in 10 seconds. Calculate his acceleration. Show your work and include units.

AnnyKZ [126]

Hope this helps you out

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3 years ago

A water tank is in the shape of an inverted cone with depth 10 meters, and top radius 8 meters. Water is flowing into the tank a

Elis [28]

Answer:

The value of leaking rate in the question is repeated. By searching on the web I could find the correct value wich is 0.002h^2 m^3 /min.

The depth of the water has to be equal to 7.07 m in order to have a stationary volume.

Explanation:

In order to have a stationary water level the flow of water that comes into the tank (0.1 m^3/min) must be equal to the flow of water that goes out of the tank (0.002*h^2 m^3/min), therefore:

0.002*h^2 = 0.1

h^2 = 0.1/0.002

h^2 = 50

h = sqrt(50) = 7.07 m

7 0

3 years ago

The diagram below represents a horizontal force of 20 newtons applied to a 5.0 kilogram box to push it and

andreev551 [17]

Answer:

20 N

Explanation:

There are two forces acting on the box:

- The force of push, F, forward, of magnitude F = 20 N

- The force of friction, $F_f$ , backward

So, the equation of motion for the box is

$F-F_f = ma$

where

m = 5.0 kg is the mass of the box

a is its acceleration

The box is sliding at constant velocity: this means that its acceleration is zero

a = 0

So, the equation becomes

$F-F_f = 0$

Therefore, we can find the magnitude of the force of friction:

$F_f = F = 20 N$

8 0

3 years ago