What is thermal expansion and how does it relate to heat?

Answers

Answer 1

Answer:

Answer:

"The idea behind thermal expansion is that gases expand as the temperature increases. If you have a balloon and you heat up the contents, the balloon will get larger. Scientists use the term ideal gas law to describe this activity. Liquids expand and contract, too, but there is a lot less change than in gases."

I don't know if this is what u meant, but, hope this helps :3

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Newton’s Third Law of Motion states that when one object exerts a force on a second object, the forces are __________________. A.
equal in magnitude and equal in direction

B.
equal in magnitude and opposite in direction

C.
opposite in magnitude and equal in direction

D.
opposite in magnitude and opposite in direction

Answers

b. equal in magnitude and opposite in direction

the answer of the question is A

Vince is baking a cake. He pours flour and sugar into an empty bowl. The substance in the bowl is a(n) __________.a)atom.
b)element
c)mixture.
d)compound.

Answers

Answer: c) mixture.

Explanation:

An atom is the smallest entity of any substance which consists of subatomic particles called as neutrons, protons and electrons.

An element is a pure substance which is composed of atoms of similar elements. Example: $H_2$

Mixture is formed when atoms of similar or different elements are mixed in no fixed ratio without any chemical combination.

A compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass. Example: $H_2O$

It is 'C', a mixture, because flour and sugar are both a compound.

explain why a high speed collision between two cars would cause more damage than a low speed collision between the same two cars?

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Significant transfer of kinetic energy and momentum in high-speed collision causes more damage than low-speed collision.

From the laws of momentum and kinetic energy, a collision between two cars at a high speed would result in more damage than a collision between the same two cars at a moderate speed.

Momentum: An object's momentum is calculated by multiplying its mass by its velocity. The momentum of both cars is a crucial element in a collision. When two cars meet quickly, they have more momentum, which increases the amount of motion and force that is applied to the impact. The two cars' combined momentum increases the force of the collision.

Kinetic Energy: The energy of motion that an object possesses as a result of its mass and velocity. An object's kinetic energy is inversely related to its square of velocity. In comparison to a low-speed accident between the same two cars, the kinetic energy involved in a high-speed collision is substantially more.

A significant quantity of kinetic energy and momentum are transferred to the point of impact when two cars crash at high speed.

In contrast, kinetic energy and momentum are less engaged in low-speed collisions, which leads to less force being applied to the cars and their occupants.

Hence, due to significant transfer of kinetic energy and momentum in high-speed collision causes more damage than low-speed collision.

To learn more about Kinetic energy, here:

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I've would cause more damage, because there is nore momentum and input force equals output force and the momentum is transferred between the two cars more so than if they had a lower velocity

three places magnets are threatening toy cars as shown below then Jerry measures how far is car rolls when she launches it from the same starting point using the same stretched rubber band how will the force of the rubber band affect the cars

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Some things depend on the band size and the car mass. Other are based on friction, how much force was applied?

The rate at which an object moves

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the rate at which an object moves is called speed or velocity depending if the direction does or doesnt matter

the rate at an object moves is speed or to travel but most likely speed

Explain the scientific meaning of the word random

Answers

Explanation:

In general the word random means by chance. The event that occurs unknowingly rather than according to plan is called at its randomness.

But in science, the word random relates with a type of event that is described by its probability distribution.

Also, random means the entropy of the system i.e. it is a thermodynamic quantity that represents the amount of energy in the system that is unavailable for doing work.

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Suppose a scientist made this model.what info did the scientist need to know in order to make the model

Which example best demonstrates the relationship between temperature and pressure?Question 19 options: melting ice, bubbles on a pizza popping when they are cut, bubbles forming in dough when it is heated, or evaporating water

How could you keep an objects acceleration the same if the force acting on the object were double?