can u plzz help meee

A student lists some possible ways to investigate the transfer of kinetic energy using ice in a sample of water. The procedure would be best to investigate the transfer of kinetic energy is Determine temperature and mass of water. Put ice in water. Record the time for ice to melt. Therefore, option 4 is correct.

The term kinetic energy is define as the energy of motion, observable as the movement of an object. The formula of kinetic energy is as follows:

Kinetic energy = 1/2 mv²

Kinetic energy exists in every moving object and particle. Kinetic energy is demonstrated by a person walking, a soaring baseball, a crumb falling from a table, and a charged particle in an electric field.

Kinetic energy is the energy held by a moving object. Kinetic energy exists in the earth's rotation around the sun, you walking down the street, and molecules moving in space.

Thus, option 4 is correct.

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Answer:

Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.

Explanation:

Interesting fact...

Why are there differences between the cooling rates of sand and water? Sand cools off faster than water because sand is a solid. Water heats up slower and cools off slower than sand. Sand heats up faster and cools off faster than water.

As a variable and to count as land. As if you were at a beach, this sand would count as the sand that the sun would be beaming on. ^^

-Answer

Answer: For forces on flat rigid bodies such as a wall, it is less direct in the calculation of work done as force times distance or displacement compared to other situations. You will have to calculate the pressure exerted first which will be P = F/A, where F is the force as above in Newtons, and A is the area of the wall first. There should also be a pressure limit for the wall in question based on what it is composed of and its dimensions from structural mechanics. The exerted force must exceed the upper limit of tolerated force to break the wall. In any case even without breaking the wall, using very accurate optical technology you can estimate the displacement now a days however minute, or the change in the form of volume of displacement also due to the pressure. Here Work done can be given still as follows : W = F •d, or W = P •V, or W = (F/A)•V. Here V will be the approximate

Explanation: i hope this helps

Answer:

a = 4m/s²

Explanation:

Given:

F = 800N

m = 200 kg

Unknown:

acceleration or a

Formula and solution:

a = F/m

a = 800 kg.m/s² ÷ 200 kg

Final Answer:

a = 4 m/s²

in the solution there's a two same unit and that is kg so the same unit will be cancelled and the rest is going to aapply in the answer that is 4 so if combine it the final answer is 4 m/s²

We didn't get any answer options but here's my answer anyways...

Hydro power is electrical energy produced through the power of moving water. Power obtained from the (typically gravitational) movement of water., Hydropower plants derive energy from the force of moving water and harness this energy for useful purposes...

Hope is helped!

Answer:

object composition

Explanation:

Answer:

C

Explanation:

Answer:

Force of Friction = -50 (N)

Acceleration = 2.45 (m/s^2)

Explanation:

Force of Friction = f = N * coefficient of friction

N = m * g

=> Force of Friction = m * g * coefficient of friction

f = 20 * 10 * -0.25 = -50 (N)

------------------------------------------------------

(1) F net = F + f

(2) F = m * a

(1) F net = 99 - 50 = 49

(2) a = 49 / 20 = 2.45 (m/s^2)

Answer: The water Molecules of sample 1 are moving faster

Explanation:

The temperature of the sample in which the color spreads quickly is higher than sample 1. Hence, statement d is correct.

Kinetic energy of a substance is the energy generated by virtue of its motion. It is dependent on the mass and velocity of the substance. Temperature of the system also affects the kinetic energy of substance.

According to kinetic theory of matter, as thermal energy increases, kinetic energy of the particles also increases leading to more effective collisions results in reactions.

Here, the color spreads more easily in sample 2 because the higher temperature of the solution provide enough thermal energy for the liquid particles to gain kinetic energy to easily move through the solution. Thus, statement d is correct.

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Answer:

Hope it helps

Explanation:

The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases

Answer: I think the answer is "hotter" the "bigger"

Explanation:

X-Rays can reveal an objects temperature since temperature determines the wavelength of its radiation. The HOTTER the object, the BIGGER the wavelength is because if tempeture determines wavelength then the hotter it is the bigger the wavelength would be and vice versa. Hopefully that helped. im not 100% sure.

Answer: Water molecules are in motion

Answer:

A motivational speech for a to be scientist. Crazy experiments and more you have the right to be whatever you adore. Your young yet strong everything will come along. I believe in you and so should you since your becoming a scientist you’ll acquire it soon. You’ll discover new things and sight to see when you become a scientist make sure to call me. :)

Explanation:

Hope it’s good I made up a couple words that rhyme good luck!

Answer:diffraction

Explanation:

Answer:

Refelction

Explanation:

look it up that is what it says

5.0 start thanks and plx do brainly

Answer:

Explanation:

A fishing pole maybe?

Answer:

A aieplane

Explanation:

Because brittle means hard but liable to break or shatter easily.

Answer:

Amy because she was less than her dad and due to the dads weight being more it'll add friction to the skates which will slow him down.

Explanation:

Answer:

Amy will win because she ways less than her dad.

Explanation:

Answer:

It does change if the weather is bad then very soon the climate will turn bad when the climate is unfavourable then the sourrounding will be affected. For example if the area around the Mt. Everest is Hot & Humind the ice would start melting & it would lead to way more issues.

Answer:

We only see one side of the moon due to the synchronous rotations and the earth rotation ration is approximately 27 days

Explanation:

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.

Answer:

Mass measures the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg). Volume measures the amount of space that a substance or an object takes up. The basic SI unit for volume is the cubic meter (m3)

Q: What does potential energy depend on?

A: Pontential energy depends on the mass of an object and it's distance.

Answer:

dx = 0

Explanation:

The Force of Friction = N * coefficient of static friction

N = m * g

=> The Force of Friction = m * g * coefficient of static friction

The Force of Friction = 100 * 10 * 0.4 = 400 (N)

The Force of Friction > The Force of John

=> It won't move!

The bench will not move because the friction force is more than john's applied force. Friction force= 392 N

Calculation

[tex]f_{k} =[/tex][tex]u_{k} *F_{N}[/tex]

where,

[tex]f_{k}[/tex] is friction force,

[tex]u_{k}[/tex] is coefficient of friction.

[tex]F_{N}[/tex] is the normal force

⇒[tex]f_{k} =0.4(100*9.8)=392 N[/tex].

Hence Force applied by john, 380N is less than the Frictional force, 392N.

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Answer:

The lens of the eye is a convex lens. It fine-tunes the focus so an image forms on the retina at the back of the eye. Tiny muscles control the shape of the lens to focus images of close or distant objects. The retina is a membrane lining the back of the eye.

Answer:

Decrease in speed

Explanation:

Increasing an object's velocity can decrease kinetic energy. *The velocity of an object has no effect on kinetic energy. *Increasing an object's velocity can increase kinetic energy. Increasing an object's velocity can increase kinetic energy.

Answer:

Answer:

did it have more than one phase

Explanation:

this will be my question