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Alex17521 [72]
3 years ago
8

Billiard balls moving across a pool table is an example of _____ friction.

Physics
1 answer:
frozen [14]3 years ago
8 0
It is an example of rolling friction because balls roll.

Answer is ROLLING
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Velocity, height

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What is the range of wavelengths that our eyes can see on the spectrum(this is called visible light spectrum)
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380 to 700 nanometers

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The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700 nanometers.

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Which list accurately identifies the hierarchy of space from largest to smallest? Solar system, galaxy, planet, universe Galaxy,
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<h3><u>Answer;</u></h3>

Universe, galaxy, solar system, planet, moon

<h3><u>Explanation;</u></h3>
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Read 2 more answers
7. A child of mass m starts from rest and slides without friction from a height h along a curved waterslide (Fig. P5.46). She is
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The mechanical energy of the girl will be conserved because the system is isolated and the initial potential energy will be equal to final kinetic energy.

<h3>What is the law of conservation of energy?</h3>

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

The change in the potential energy of the  launched from a height into the pool without friction from the given height h is calculated by applying the following kinematic equation.

ΔP.E = ΔK.E

where;

  • ΔP.E is change in potential energy of the child
  • ΔK.E is change in the kinetic energy of the child

mghf - mghi = ¹/₂mv²  - ¹/₂mu²

where;

  • m is the mass of the girl
  • g is acceleration due to gravity
  • hi is the initial height of the girl
  • hf is the final height when she is launched into the pool
  • u is the initial velocity
  • v is the final velocity of the girl

Thus, for every closed or isolated system such as this case, mechanical energy is always conserved because the initial potential energy of the girl will be converted into her final kinetic energy.

Learn more about conservation of mechanical energy here: brainly.com/question/332163

#SPJ1

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1 year ago
How has technology influenced theories over time?
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Better technology is helping us because we can see more stuff like the microscope we able to make assumptions based on what we saw.  
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