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3 years ago

A type of electromagnetic wave that does not need a medium to travel.

Physics

2 answers:

sertanlavr [38]3 years ago

8 0

Answer:A

Explanation: light doesn’t need a medium through which to travel because the speed of light is experimentally constanant

BaLLatris [955]3 years ago

3 0

Answer: The answer is A. Light hope it helps

Explanation:

Can I get Brainliest pls Ur choice

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A 0.45 kg soccer ball changes its velocity by 20.0 m/s due to a force applied to it in 0.10 seconds. What force was necessary fo

frutty [35]

Answer:

90 N

Explanation:

The force applied to the ball is given by:

$F=\frac{\Delta p}{\Delta t}$

where

$\Delta p$ is the change in momentum of the ball

$\Delta t$ is the time taken

The change on momentum of the ball is:

$\Delta p=m\Delta v=(0.45 kg)(20 m/s)=9 kg m/s$

So, the force applied is

$F=\frac{9 kg m/s}{0.10 s}=90 N$

6 0

3 years ago

Read 2 more answers

What might happen when the function of the two remaining systems is affected. 1.Digestive System

nevsk [136]

Answer:

We will be effected not only with health, but also with our ability to carry out our genes to the next generation.

Explanation:

Our health is important, as we all know, so anything that happens to the digestive system will have a serious problem to our longevity, our reproductive system is also important to carry out our genes, and give birth to a new generation, it wouldn't effect us if only 1 person couldnt reproduce, but if everyone had a problem in their reproductive system, it would mean the extinction of all humanity.

5 0

3 years ago

The Moon has too little iron, Mercury too much. How can both of these anomalies be the result of giant impacts? Explain how the

arsen [322]

Answer:

Explanation:

Giant impact has resulted into formation of celestial bodies such as moon.

Moon was formed years after the Earth was formed. When Earth collided with very big size bodies, there was vaporization of chunks of the planets in to the space. Gravity plays its role and bounded those particles together thus forming moon.

This formation explains Moon is made up of lighter elements and contains too little iron where as Mercury was formed with the rest of the planets and just like earth, its core is formed first which is of iron and then collected the lighter elements to form crust and mantle.

Though both Moon and Mercury were the result of giant impacts yet they have different elements because mercury was made earlier and its is closer to moon hence it collected heavy elements such as iron to for the formation where as moon is the result of collision of Earth and other Mars- sized body hence its constituent particles are different that of mercury.

4 0

4 years ago

Find the values of the root mean square translational speed v, molecules in gaseous diatomic oxygen (O2), gaseous carbon dioxide

frez [133]

Answer:

539.19 m/s , 459.83 m/s , 2156.78 m/s

Explanation:

The formula for the rms speed is given by

$v_{rms}=\sqrt{\frac{3RT}{M}}$

Where, R be the gas constant, T be the absolute temperature and M be the molecular mass of the gas

R = 8.314 in SI units

T = 100°C = 100 + 273 = 373 K

For Oxygen:

M = 32 g = 0.032 kg

$v_{rms}=\sqrt{\frac{3\times 8.314\times 373}{0.032}}$

vrms = 539.19 m/s

For carbon di oxide:

M = 44 g = 0.044 kg

$v_{rms}=\sqrt{\frac{3\times 8.314\times 373}{0.044}}$

vrms = 459.83 m/s

For hydrogen:

M = 2 g = 0.002 kg

$v_{rms}=\sqrt{\frac{3\times 8.314\times 373}{0.002}}$

vrms = 2156.78 m/s

3 0

3 years ago

What is the GPE of a 15,000 kg airplane sitting on the ground?

Vesna [10]

Answer:

C, it is not moving

it has no potential

7 0

3 years ago