PHYSICS HIGH SCHOOL

Within an internal combustion engine, the can-shaped component that moves up and down the cylinder and is the main moving part in the engine is theA. connecting rod.
B. piston.
C. spark plug.
D. crankshaft.

Answers

Answer 1
Answer: Piston is the part in the combustion engine which moves up and down. Piston is connected in connecting rod which helps to move it.
Spark plugs are used to produce spark.

So the answer is B. Piston

Hope I Helped You!!! :-)

Have A Great Day!!!
Answer 2
Answer: Piston is the part in the combustion engine which moves up and down.
So your answer is B.

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What type of machine is a pair of scissors?a. Simple - Lever
b. Simple - Wedge
c. Compound - Lever and Wedge
d. Compound - Inclined plane and lever.

Answers

The type of machine of a pair of scissors is a compound machine classified as lever and wedge. The answer is letter C. The pivot joint is the lever and the wedge are the blades of the scissors. This is to efficiently exert force on an object to cut it.

Radio waves travel at 3.00 · 108 m/s. Calculate the wavelength of a radio wave of frequency 900 kHz. (9.00 · 105 Hz.)_____ m

2.70 x 1014
3.70 x 10-15
3.33 x 102
3.00 x 10-3

Answers

v: velocity of wave
f: frequency 
L: wavelenght

v = fL => L = v/f => L = (3x10^8)/(900x10^3) => L = 3.33 x 10^2m

Which of these follows from Newton's laws about the energy of a moving object? A)The total mechanical energy of an object is always constant. B)The kinetic energy of an object remains the same if friction is absent. C)The mechanical energy remains the same if there are only conservative forces acting. D)The total of all forms of energy is always constant.

Answers

The correct answer for the question that is being presented above is this one: "C)The mechanical energy remains the same if there are only conservative forces acting." The statement that shows that Newton's laws about the energy of a moving object is that the mechanical energy remains the same if there are only conservative forces acting.

A material that transmits nearly all the light in a ray because it offers little resistance to the light is A. translucent.
B. opaque.
C. fluorescent.
D. transparent.

Answers

Answer

D. transparent.

Explanation.

Materials can be classified into three in relation to how light pass through them.

Translucent. These are materials that allow light to pass through them but you can not see through them. A good example of this material is the glass that is used to make doors of a bathroom.

Opaque. These are material that cannot at all allow light to go through them. Examples are; Thick metals, concrete, wood and many others.

Transparent. Theses are materials that allow light to go through them and also you can see through them. A good example is the windscreen of a car.

With this information the correct answer is D. transparent.
The answer is D, transparent

Five different forces act on an object. Is it possible for the net force on the object to be zero? Explain

Answers

No. If there are forces on an object, they need to have a counterforce, otherwise the object won't be zero. Since there are only 5 forces, the 5th force has no counterforce, resulting in movement or reforming the object.
Of course it is !

-- Whatever the resultant of four of the forces is, one more force
with the same magnitude in exactly the opposite direction makes
the overall net force zero.

-- Example: 
4 cheerleaders are in a tug-of-war against the captain of the football team.
The flag in the middle of the rope is stationary.
He's holding off all 4 of the skinny girls.
The net force on the flag is zero.

Rarefaction occurs only in a _______ wave. A. sympathetic.
B. longitudinal.
C. transverse.
D. forced.

Answers

Rarefaction occurs only in a longitudinal wave.

What is refraction?

A light beam refracts whenever it reaches an angled material with a different refractive index. A change in direction results from this acceleration. As an example, consider air entering the water. The speed of the light decreases as it continues to travel at a changingangle.

Transverse waves do not experience rarefaction, which is a phenomenon that only happens in longitudinal waves.

This is due to the fact that longitudinal waves cause the medium through which they travel to be compressed and rarefied.

Transversewaves, however, feature oscillations that are parallel to the direction of the wave.

With a longitudinal wave, the medium's particles are moved along with the wave in the same direction.

Both zones of compression and rarefaction result from this, with the former having the particles closer together than they would be in their equilibrium state.

The wave is produced by the pattern of compression and rarefaction.

Due to the displacement of the medium's particles in the same direction as the wave's propagation, rarefaction only happens in longitudinal waves, where it results in places where the particle spacing is greater than it would be in the equilibrium state.

Learn more about refraction here:

brainly.com/question/14760207

#SPJ6

The correct answer to the question is : B) Longitudinal wave.

EXPLANATION:

Before coming into any conclusion, first we have to understand the nature of sound wave.

The sound wave is a longitudinal wave in which the direction of vibration of particles are parallel to the direction of wave propagation.

In this type of wave, one will find compression and rarefaction. Compression is the high pressure region in which the particles are closely aggregated to each other.

Rarefaction is the low pressure region in which the particles are far away from each other. There is large separation between particles as compared to compression.

Hence, the correct answer is sound wave.
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