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Sloan [31]
3 years ago
12

An object of mass m is moving down an inclined plane that makes an angle they a with the horizontal and has height h. Which of t

he following statements is correct regarding its energy? A.)It is kinetic only. B.)It is kinetic and potential. C.)It is potential only. D.)Nione of the other choices is correct.
Physics
1 answer:
Lera25 [3.4K]3 years ago
4 0
The answer should be B. According to the conservation of energy, the energy cannot be created nor destroyed, but it can be transformed. Since the object is moving down, that means its height is decreasing, causing the potential energy decreasing and the kinetic energy  increasing to fulfill the conservation law. 
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You are attempting to row across a stream in your rowboat. Your paddling speed relative to still water is 3.0 m/s (i.e., if you
Nataliya [291]

Answer:

Please check the attached file for the diagram

Explanation:

The velocity of the of the rowboat V_{tot}  through the river is the resultant velocity. It is obtained taking a vector sum of the velocity in still water and the velocity of the river.

There are several ways to take this vector sum, but the question makes it simple for us to use Pythagoras's theorem because the East and North directions are perpendicular to each other.

Hence;

V_{tot}^2=V_{still}^2+V_{w}^2\\V_{tot}^2=3^2+4^2

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3 years ago
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Bess [88]

Answer:

Your answer is A

Explanation:

7 0
2 years ago
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A square sheet of rubber has sides that are 20 cm long. If you stretch it so that the area of the rubber is four times larger, h
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Answer:

400

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Trust me its correct

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3 years ago
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At an instant when a particle of mass 80 g has a velocity of 25 m/s in the positive y direction, a 75-g particle has a velocity
dalvyx [7]

Answer:

16 m/s

Explanation:

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y momentum = 0.080 *25 = 2

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7 0
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