A squirrel (mass 0.9 kg) is running across the road at a speed 4.0 m/s. What is thesquirrel's kinetic energy?

Answers

Answer 1

Answer:

The kinetic energy of the squirrel with a mass of 0.9 Kg running with a speed of 4 m/s is 7.5 J.

What is kinetic energy?

Kinetic energy of an object is a form of energy generated by virtue of the motion of the object. Kinetic energy is dependent on the mass and velocity of the body.

When a body starts to move its potential energy starts to convert to kinetic energy and the kinetic energy will be maximum at the highest speed. When the object slow down and pause in a position it gains potential energy again.

The kinetic energy KE = 1/2 mv²

Given mass = 0.9 Kg

velocity = 4 m/s.

KE = 1/2 0.9 Kg × 4² m/s

= 7.5 J

Therefore, the kinetic energy of the squirrel is 7.5 J.

To find more on kinetic energy, refer here:

brainly.com/question/26472013

#SPJ2

Answer 2

Answer:

Answer:

A). Option A

B). Option B

C). Option B

Explanation:

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What's 7y^2 - y^2? HELP!

Answers

Hey there...
Let's solve this problem by steps.

Method 1 -
Step 1 --> Taking GCF
$y^2 ( 7 - 1 )$

Step 2 ---> Combining like terms
$y^2 ( 6)$

Or

$6y^2$ is your final answer.

Method 2 -
We can straight way subtract $y^2$ from $7y^2$ which is
$7y^2 - y^2$
$=\ \textgreater \ 6y^2$

Hope it helped you.. :)

7y^2 - y^2 = 6y^2 i think!

Please really need help with this

Answers

The top of the wavelength is called the crest.

-- The arrow in the picture is pointing to a crest of the wave ... one of the peaks.

-- The amplitude of the wave is the vertical distance between one of the crests and the light horizontal line across the middle.

-- The wavelength is the horizontal distance between two crests.

-- Do you know what a 'trough' is ? Well first of all, when you read the word, it looks like you should pronounce it like "trow", but the correct pronunciation is "trawf". (Just like when you have something stuck in your throat, and you cough ... you don't "cow", you "cawf".)

In an old cowboy movie, do you remember the big, open water tanks they used to have along the side of the street in front of the saloon, for horses to drink from while they were tied up to the hitchin post ? THAT tank was called a "watering trough". The bottom of a wave, where the wave could hold water, is the trough of the wave. It's an upside-down crest.

Summarize what you learned this week about the electromagnetic spectrumHINT: What is it? What does it organize? How do we use these EM waves in our lives?

Answers

Answer:

I only really know the "How do we use these EM waves in our lives?" part srry

Explanation:

EM waves are used to make sure you cellphone, radio, TV, and etc. have service/ connection.

Electromagnetic spectrum consists of
Radio waves
Microwaves
Infrared
Visible light
Ultraviolet
X-ray
Gamma ray

We use these everyday in our life however they also have dangers.

Radio waves - their long wavelength allows them to help with communication
Danger - exposure to a lot of radio waves can cause cancer or leukaemia

Microwaves - used for heating up food and transferring heat to the food.
Dangers - exposure can cause cancers and other diseases.

Infrared - can be used for remote controls and security cameras.
Danger - can cause damage to the cornea in your eye

Visible light - used for photography and optical fibres.
Danger - intense sources can cause permanent or temporary damage to the eyesight.

Ultraviolet - can be used to sterilise food and sterilise surgical equipment.
Danger - can cause skin damage and may lead to a cancer.

X-rays - used to see the internal structure of tissues and bones.
Dangers - can lead to mutations and May damage the cells

Gamma- can be used to sterilise food and surgical equipment and kill microorganisms and other bacteria.
Dangers - May reach your cells and cause cancer and cell mutations which could result in mutations.

If you are driving 128.4 km/h along a straight road and you look down for 3.0s, how far do you travel during this inattentive period?

Answers

Answer:

107 m

Explanation:

Convert km/h to m/s:

128.4 km/h × (1000 m / km) × (1 h / 3600 s) = 35.67 m/s

Distance = rate × time

d = 35.67 m/s × 3.0 s

d = 107 m

if a liquid substance is transferred to a different container what can be predicted about the volume of the liquid in the new container?

Answers

Explanation:

In liquids, force of attraction between the molecules is less as compared to solids but force of attraction between the molecules is more strong as compared to gases.

Also, liquids do not have any definite shape and they acquire the shape or container or vessel in which they are placed.

Therefore, when a liquid is simply transferred from one container to another container then its volume remains the same.

It will stay the same

What are the short eruptions of intense high-energy radiation from the sun's surface called? A. Corona
B. Prominences
C. Solar flares
D. Sunspots

Answers

The Answer is C. Solar Flares

Solar Flares. solar flares are a certain eruption of magnetic energy on or near the surface of the sun, usually associated with sunspots and accompanied by bursts of electromagnetic radiation and particles ultraviolet and x-ray radiation from sun flares often induce electromagnetic disturbances in the earth's atmosphere.

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Water Cycle: As _________ get too heavy to hold the liquid, the liquid droplets fall back to Earth.