PHYSICS HIGH SCHOOL

Currently, Earth's tilt is closest to _____.A. 0°
B. 14.5°
C. 23.5°
D. none of these because, Earth's tilt changes dramatically with each orbit

Answers

Answer 1
Answer: The answer is C. 23.5°. It's because of this tilt that the Earth experiences seasons as it orbits around the Sun. Imagine the Sun is at the center of a spinning record.

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Which of the following does not represent a mechanical wave?sound
waves in the ocean
waves in a wheat field
light

Answers

Answer:

The other person who answered is incorrect- the real answer is light.

Explanation:

  A mechanical wave is a wave that requires a medium. A medium is any substance that has a defined set of physical properties and can transmit energy. A medium can be a solid, liquid, or gas. Some examples of a medium include an iron bar, the ground, water, lava, air, and helium in a balloon.

  The answer is not sound because sound travels through waves through the air. If you were to put a source of sound in a container that contains no air, you would not be able to hear the sound through the container. Since sound has a wave and a medium, it is a mechanical wave.

  The answer is not waves in the ocean because, obviously, this is a wave. Its medium is the water. Since it has a wave and a medium, it is a mechanical wave.

  The answer is not waves in a wheat field because, again, this is a wave. The medium is the air. Since it has a wave and a medium, it is a mechanical wave.

  The answer is light. Light travels through electromagnetic waves. However, it does not require a medium. Light can travel not only through air and solid materials, but also through the vacuum of space. Since light does not require a medium, it is not a mechanical wave.

I hope this helps !! :)

ocean waves because its not artificial

The work done by an engine equals one-fourth the energy it absorbs from a reservoir. True or False

Answers

True IF the engine is 25% efficient. False otherwise.

What happens when there is a change in pressure at any point in a fluid

Answers

A change in pressure applied to an enclosed fluid is transmitted undiminished to every point of the fluid and to the walls of the container. This is a statement of Pascal's Principle, which is the basis of the hydraulic jack you see lift cars at the garage.

the 2,200 meters-per-second flux in an ordinary water reactor is 1 .5 x 1013 neutronsl cm2-sec. at what rate are the thermal neutrons absorbed by the water?

Answers

Answer:

bbkbo.om

Explanation:

you'll go go hi I go gfdd go jhhgg you out in FB kjjhbbbbbnmkjhvvvhjmkklbihoboblh LA n

glass is mostly made of silica,which is found in sand. if lead is added to silica to make a crystal vase, the lead is known as the

Answers

Considering that the silica is a solvent, the lead is called the colloid, which is a substance that added to another substance in the matter in which you described.

The cheetah, which is the fastest land mammal, can accelerate from 0.0 mi/hr to 70.0 mi/hr in 3.0 seconds. What is the acceleration of the cheetah? Give your answer in units of mph/sec.

Answers

Initial velocity of Cheetah(V1) = 0.0 mi/hr
Final velocity of Cheetah(V2) = 70 mi/hr
Time for acceleration(T) = 3 seconds.
We know the formula
Accelaration(A) = Velocity/Time
So
A = (V2 -V1)/T
   = (70 -0)/3
   = 70/3
   = 23.33mph/sec
So the accelaration of the Cheetah is 23.33 mph/sec.
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