Propose a hypothesis for how the position of the ball will affect the amount of its gravitational pull energy

1 answer:

4 0

throwing a ball up initially has a lot of kinetic energy because it is moving upwards ( kinetic energy is energy which a body possesses by virtue of being in motion.) this all then get converted to gravitational potential energy, and for a moment it is stationary before it begins to fall again. by the time it has returned again, all the gravitational potential energy has turned back into kinetic.

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The force between two objects, each of charge +Q is measured as +F when the objects are separated a distance d apart. If the cha

dybincka [34]

Answer:

$F'=4F$

Explanation:

According to Coulomb's law, the magnitude of the force (F) between two objects with the same charge(+Q), separated a distance (d) apart, is defined as:

$F=\frac{kQ^2}{d^2}$

Here k is the Coulomb constant. The charge on each object is doubled, that is $Q'=2Q$ :

$F'=\frac{kQ'^2}{d^2}\\F'=\frac{k(2Q)^2}{d^2}\\F'=4\frac{kQ^2}{d^2}\\F'=4F$

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4 years ago

Tom Sawyer runs 10 m/s down the dock and leaps on to his floating raft already moving 1.5 m/s away from shore. If Tom weighs 70

KatRina [158]

Answer:

Not the right answer in the options, speed is 4.47 m/s, and the procedure is coherent with option A

Explanation:

Answer A uses mass and velocity units, which are momentum units. By using the conservation of momentum:

. $p_{initial} =p_{final} \\m_{Tom}*v_{Tom}+m_{raft}*v_{raft}=(m_{Tom}+m_{raft})*v_{both} \\70*10+130*1.5 kg*m/s=895kg*m/s\\v_{both}=\frac{895 kg*m/s}{200 kg} =4.47 m/s$

Since Tom stays in the raft, then both are moving with the same speed. From the options, the momentum is in agreement with option A, however, the question asks for speed.

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3 years ago

I NEED. HELP PLEASE, THANKS! :) Air is an insulator. However, in winter you might experience a spark when your fingers touch a d

Jobisdone [24]

Answer:

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4 years ago

What simple machine is a fishing pole?

elena55 [62]

A fishing pole is made up of 3 simple machines, it is a 3rd class lever, a pulley and a wheel and axle which is your reel.

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4 years ago

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A device experiences a voltage drop of 5.0 V across it while a current of 10.0 mA flows through it. How much power does it dissi

Kipish [7]

Answer:

0.05 W