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Fundamental Concepts of Energy and Matter Quiz

#1

What is the SI unit of energy?

Joule
Explanation

Unit of energy.

#2

Which law of thermodynamics states that energy cannot be created or destroyed, only transformed or transferred?

First law
Explanation

Conservation of energy principle.

#3

Which of the following is a renewable source of energy?

Solar power
Explanation

Renewable energy source.

#4

What is the law of conservation of energy?

Energy cannot be created or destroyed, only transformed
Explanation

Principle of energy conservation.

#5

Which type of energy is associated with the motion of atoms and molecules?

Thermal energy
Explanation

Energy of atomic motion.

#6

What is the mass of a proton approximately equal to?

1.67 x 10^-27 kg
Explanation

Approximate mass of a proton.

#7

What is the total energy of an isolated system known as?

Internal energy
Explanation

Total energy in a closed system.

#8

What is the formula for calculating kinetic energy?

KE = 0.5mv^2
Explanation

Kinetic energy formula.

#9

What is the speed of light in a vacuum approximately?

3 x 10^8 m/s
Explanation

Speed of light in vacuum.

#10

What is the equation for calculating gravitational potential energy?

GPE = mgh
Explanation

Gravitational potential energy formula.

#11

According to Einstein's theory of relativity, what happens to an object's mass as its velocity approaches the speed of light?

It increases
Explanation

Mass increase with velocity.

#12

Which particle is responsible for carrying the electromagnetic force?

Photon
Explanation

Particle carrying EM force.

#13

What does E=mc^2 represent?

Energy-mass equivalence
Explanation

Equivalence of mass and energy.

#14

What does the equation PV = nRT represent in thermodynamics?

Ideal gas law
Explanation

Equation for ideal gases.

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