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Pie
3 years ago
5

Hanna tosses a ball straight up with enough speed to rermain in the air for several seconds

Physics
1 answer:
Ipatiy [6.2K]3 years ago
7 0
What a relief !  That gives her time to step out of the way, before the ball
comes crashing down in the same place where she was standing.
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Answer:20n Force :Right

Explanation:

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7 0
3 years ago
A gas sample occupies 4.2 L at a pressure of 101 kPa. What volume will it occupy if the pressure is increased to 235 kPa?
Dmitrij [34]
For this we want to use Boyle's Law. Boyle’s law states that the pressure and volume of a fixed quantity of a gas are inversely proportional under constant temperature conditions. The formula for this is P1V1 = P2V2. We want to solve this out so it equals V2 (Volume 2). So P1V1 / P2 = V2. Then plug in your values for the variables. So (101)(4.2) / 235 = V2; so 424.2 / 235 = V2. The final volume equals 1.81. I hope this helps, If not I am very sorry.
7 0
4 years ago
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3 0
3 years ago
A 15 kg mass is moving at 7.50 meters per second on a horizontal, frictionless surface. What is the total work that must be done
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The additional energy needed to speed the object up from 7.5 m/s
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3 years ago
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where is the answer choices

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3 years ago
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