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erastovalidia [21]
3 years ago
6

Convert 350 calories to KJ

Physics
1 answer:
Lesechka [4]3 years ago
5 0
If you convert 350 calories to kilojoules you will get 1.4644
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A car slams on the brakes to stop. The road pushes back up on the car with a normal force of 12,750 N and friction from the brak
ivann1987 [24]

Answer:

\displaystyle \mu_d=0.75

Explanation:

Coefficients of Friction

Objects in physical contact produce friction which usually manifests as thermal energy being dissipated in the surface where the objects are interacting. It's usually harder to start to move an object from rest, that keeps moving it at a constant speed on the same surface. That is why there are two different coefficients of friction: the static and the dynamic. As mentioned, the static coefficient \mu_s is greater than the dynamic coefficient \mu_d. The car is already moving and is attempting to stop. The coefficient of friction is defined as

\displaystyle \mu_d=\frac{F_r}{N}

Where Fr is the force of friction and N is the normal or the force the road pushes back up on the car. With the given data, we have

\displaystyle \mu_d=\frac{9,560\ N}{12,750\ N}

\displaystyle \boxed{\mu_d=0.75}

The coefficient of friction is dimensionless (doesn't have any units)

6 0
3 years ago
Please select the word from the list that best fits the definition Visualizes where items are located
Amanda [17]

Answer:I’m pretty sure it’s spatial

Explanation:

3 0
4 years ago
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Diagram of an atom with labels
lina2011 [118]

See this. I hope you find your answer

6 0
3 years ago
What happens to Roberto’s kinetic energy when he runs twice as fast?
Scilla [17]
Well I would assume it would increase due to the increase in body movement creating more energy
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3 years ago
What does the Q stand for in the enthalpy of fusion equation?
pychu [463]

The Q in the enthalpy of fusion equation stands for heat energy absorbed or released.

<h3>What is enthalpy?</h3>

In thermodynamics, enthalpy is a measure of the heat content of a chemical or physical system.

The enthalpy of fusion is the amount of heat energy required to convert a unit mass of a solid at its melting point into a liquid without an increase in temperature.

Its units are usually Joules per gram (J/g) or calories per gram (cal/g).

The enthalpy of fusion equation is given as follows:

Q = m·ΔHf

Where;

  • Q = heat energy
  • m = mass
  • ΔHf = heat of fusion

Therefore, the Q in the enthalpy of fusion equation stands for heat energy absorbed or released.

Learn more about enthalpy of fusion at: brainly.com/question/20897184

#SPJ1

3 0
2 years ago
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