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Aleks04 [339]
3 years ago
12

Match the terms to the correct descriptions.

Physics
2 answers:
Ulleksa [173]3 years ago
5 0
2. kinetic energy: due to it being transferred through collisions
Sveta_85 [38]3 years ago
4 0
Mechanical energy - this can be either kinetic or potential and has to do with the energy of position and motion of an object

Kinetic energy - this has to do with the speed of an object and how much mass it has; basically how the object is moving

Potential energy - this type of energy is stored energy; it can be increased by getting into a higher position and/or stretching an object such as a rubber band

Electrical energy - this is energy that is transferred by the movement of electrons through a conductor: the electrons create a current

Light energy - this is radiant energy from the sun; it's the only kind of energy we can see with our eyes

Thermal energy - this type of energy can be transferred in three different ways: 1) direction contact through collisions (also called conduction), 2) through a fluid making a current created by less dense fluids floating and more dense fluids sinking (also called convection), and 3) by waves traveling with or without a medium (also called radiation)

Sound energy - this type of energy travels through vibrations on waves

Chemical energy - this type of energy is often found in things like batteries or food

Nuclear energy - this is the energy found in the nucleus of an atom

Energy conversions - this is the term used when energy changes from one form to another
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Answer:

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8 0
3 years ago
Johnson made a hole at the bottom of a plastic bottle containing water. However, he noticed that the water did not flow out from
Sphinxa [80]

Answer:

  • a) See explanation below

  • b) At X.

Explanation:

Please, see the picture attached with the image of the plastic bottle for this question.

<u>(a) Explain why the water could not flow out of the bottle.</u>

What makes the water flow out of the botlle is the force of gravity, whic attracts the water towards the Earth.

When Johnson made a small hole at the bottom of the plastic bottle containing water, the air outside the bottle, which surrounds it and exerts a pressure all over the outer walls of the bottle, exerted a force against the small area of water "over" the hole that is in contact with the air.

Thus, this force of the air pushing upward through the wall opposed the force of gravity pulling downward making the net force zero and the water cannot fall.

<u>(b) To make the water flow out more easily, his teacher suggested making another hole. At which position - X, Y or Z, should he make the 2nd hole in order for the water to flow out the fastest?</u>

You must open the hole at a place where there is not water but air, such that the outer air can enter in the bottle.

That will make that the pressure in the space over the water inside the bottle be equal to the pressure outside.

The pressure of the air above the water will push it downward. Now, the force from the pressure of air inside the water, which is downward, opposes the upward force from the pressure of air around the first hole, and the net force will be downward, making the water flow out more easily.

Thus, the position where he should make the second hole in order for the water to flow fastest is at X.

4 0
3 years ago
A uniform horizontal rod of mass Mand length rotates with angular velocity about a vertical axis through its center. Attached to
Lostsunrise [7]

Answer:

     o

90

Explanation:

3 0
3 years ago
5. Which of these is necessary for electricity to flow?
CaHeK987 [17]

Answer:

the circuit must be closed

Explanation:

4 0
3 years ago
Read 2 more answers
A coin with a diameter 3.00 cm rolls up a 30.0 inclined plane. The coin starts out with an initial angular speed of 60.0 rad/s
sweet [91]

This question is in complete.The question is

A coin with a diameter 3.00 cm rolls up a 30.0° inclined plane. The coin starts out with an initial angular speed of 60.0 rad/s and rolls in a straight line without slipping. If the moment of inertia of the coin is(1/2) MR² , how far will the coin roll up the inclined plane (length along the ramp)? Hint: Conservation of mechanical energy.

Answer:

distance=0.124 m

Explanation:

mgh=mglSin\alpha =(1/2)Iw_{i}^{2}+(1/2)mv^{2}\\   v=wR\\Solve for L\\L=((1/2)(1/2)0.015^{2}*60^{2}+(1/2)(60*0.015^{2} ))/9.8Sin30\\   L=0.124m

6 0
3 years ago
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