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Deffense [45]
3 years ago
11

A 4.00 kg stone is dropped from a height of 145 m. What is the stone’s potential and kinetic energy respectively when it is 50.0

m from the ground?
A - 1,960 J, 5,680 J



B - 5,680 J, 1,960 J



C - 3,720 J, 1,950 J



D - 1,960 J, 3,720 J
Physics
1 answer:
Lorico [155]3 years ago
6 0

Answer:

C - 3,720 J, 1,950 J

Explanation:

Hello

Epotential = M*G*H

Ep = (4)(9.8)(145-50)

Ep = 3729 J

Then

Ec = 1950 J

Best regards

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Biker A is cruising at a speed of 10.0 m/s when she passes biker B who is at rest at the origin of the coordinate system. Biker
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A man walks 7 km, east in 2 hours and 2 km in 1 hour in the same direction. a) what is
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Explanation:

Average speed = distance / time

|v| = (7 km + 2 km) / (2 hr + 1 hr)

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3 years ago
Why is it sometimes difficult for scientists to identify a a fold or fault?
Sauron [17]

Folds and faults are difficult to identify because they occur in the interior of rocks and also due to the dense nature of the materials.

<h3>What are faults and folds?</h3>

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Folds occurs when infolds occur in materials.

Faults and folds usually occur in rocks.

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4 0
2 years ago
A 10.0 kg ball weighs 98.0 N in air and weighs 65.0 N when submerged in water. The volume of the ball is:_________.A) 0.00245 m3
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Answer: B) 0.00337 m3.

Explanation:

Given data:

Mass of the ball = 10kg

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Weight of the ball in water = 65N

Solution:

To get the Volume of the ball when submerged in water, we divide the weight of the ball in water with the difference in apparent weight by 9.8m/s^2.

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= 33 / 9.8

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7 0
2 years ago
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