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galina1969 [7]
3 years ago
11

Write two examples of machine which changes the direction of force​

Physics
1 answer:
Ostrovityanka [42]3 years ago
4 0

Answer:

Washign machine and swingset

Explanation:

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The batter swings and misses the 40 m/s (90 mph) fastball, and the ball (mass 150 grams) ends up at rest in the catcher's mitt.
Nadusha1986 [10]

Answer:

The work done by the catcher is 120 J.

Explanation:

Given;

velocity of the fastball, v = 40 m/s

mass of the fastball, m = 150 g = 0.15 kg

Based on work-energy theorem, the work done by the catcher is equal to the kinetic energy of the fastball.

The kinetic energy of the fastball is given as;

K.E = ¹/₂mv²

K.E = ¹/₂ x 0.15 x 40²

K.E = 120 J

Therefore, the work done by the catcher is 120 J.

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A block of cheese is resting on an incline.
andreev551 [17]

Answer:

The answer is diagram B I tried it out and it worked

Explanation:

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Answer: D

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3 years ago
What does the term calorie refer to
OLga [1]
Hey there,
<span>It means- the amount of energy required to raise the temperature of a liter of water one degree centigrade at sea level
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6 0
4 years ago
Explain why atmospheric pressure decreases towards higher altitudes
denpristay [2]

Answer:

At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. ... Since most of the atmosphere's molecules are held close to the earth's surface by the force of gravity, air pressure decreases rapidly at first, then more slowly at higher levels.

Explanation:

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