How can you know a chemical change has occurred?
The substance solidifies
The substance shat...
Physics, 10.09.2021 21:20 chrisspa13
How can you know a chemical change has occurred?
The substance solidifies
The substance shatters
The substance catches on fire
The substance melts
Answers: 1
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When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.
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Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than
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Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
Answers: 3
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