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3 years ago

Which two types of waves can transmit energy through a vacuum?

Physics

2 answers:

nalin [4]3 years ago

4 0

The answer would be the sound waves.

Bad White [126]3 years ago

3 0

1.radio waves

2̶.̶s̶e̶i̶s̶m̶i̶c̶ ̶w̶a̶v̶e̶s

3.sound waves

4̶.̶w̶a̶t̶e̶r̶ ̶w̶a̶v̶e̶s

5̶.̶x̶-̶r̶a̶y̶s

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What is the is the 94th element of the periodic table

shutvik [7]

Answer:

plutonium

Explanation:

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3 years ago

What symbol represents energy that moves from a hot object to a cooler object?

strojnjashka [21]

The correct answer is
C) Q

In fact, the symbol Q represents the heat, which is the form of energy transferred from a hot object to a cooler object. Heat generally refers to the energy related to the motion of the particles, and it is related to the temperature of an object: the higher the temperature of an object, the faster the particles of the object move, and so the object can transfer more energy (as heat) to other objects with lower temperature.

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3 years ago

Streams pick up a greater load of sand and gravel as they leave a mountain range and flow across a lowland.

inessss [21]

B

because it will pick it up while coming down not just flowing on low land

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3 years ago

A racquetball strikes a wall with a speed of 30 m/s and rebounds in the opposite direction with a speed of 26 m/s. The collision

Fudgin [204]

Answer:

The average acceleration of the ball during the collision with the wall is $a=2,800m/s^{2}$

Explanation:

Known Data

We will asume initial speed has a negative direction, $v_{i}=-30m/s$ , final speed has a positive direction, $v_{f}=26m/s$ , $\Delta t=20ms=0.020s$ and mass $m_{b}$ .

Initial momentum

$p_{i}=mv_{i}=(-30m/s)(m_{b})=-30m_{b}\ m/s$

final momentum

$p_{f}=mv_{f}=(26m/s)(m_{b})=26m_{b}\ m/s$

Impulse

$I=\Delta p=p_{f}-p_{i}=26m_{b}\ m/s-(-30m_{b}\ m/s)=56m_{b}\ m/s$

Average Force

$F=\frac{\Delta p}{\Delta t} =\frac{56m_{b}\ m/s}{0.020s} =2800m_{b} \ m/s^{2}$

Average acceleration

$F=ma$ , so $a=\frac{F}{m_{b}}$ .

Therefore, $a=\frac{2800m_{b} \ m/s^{2}}{m_{b}} =2800m/s^{2}$

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3 years ago

Quartz has an index of refraction of 1.46. Diamond has in index of refraction of 2.42. In which material does a light ray enteri

Ksivusya [100]

Diamond slowdown light more than Quartz , because diamonds have a greater index of refraction. Light will bend when its move from one medium to another. The Index of Refraction of Material is found by comparing the speed of light in their respective mediums.

4 0

3 years ago

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