Science Phsycis

Question 1

What is Newton’s First Law of Motion?

Answer 1

An object at rest stays at rest and an object in motion stays in motion unless acted upon by a net external force.

Question 2

What does Newton’s Second Law of Motion state?

Answer 2

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Question 3

What is the formula associated with Newton’s Second Law?

Answer 3

F = ma, where F is the net force, m is the mass, and a is the acceleration.

Question 4

What does Newton’s Third Law of Motion state?

Answer 4

For every action, there is an equal and opposite reaction.

Question 5

Fill in the blank: Newton’s First Law is also known as the _______ of inertia.

Answer 5

[law]

Question 6

True or False: An object will always accelerate when a force is applied to it.

Answer 6

False

Question 7

What is the significance of the concept of inertia in Newton’s laws?

Answer 7

Inertia is the property of an object to resist changes in its state of motion.

Question 8

List the three laws of motion formulated by Newton.

Answer 8

• First Law
• Second Law
• Third Law

Question 9

What does the net external force refer to in Newton’s laws?

Answer 9

The overall force acting on an object after all the forces are combined.

Question 10

Fill in the blank: The unit of force in the International System of Units (SI) is the _______.

Answer 10

[newton]

Question 11

What is the SI unit of force?

Answer 11

Newton

Question 12

True or False: Energy can be created or destroyed.

Answer 12

False

Question 13

Fill in the blank: The formula for kinetic energy is ____.

Answer 13

1/2 mv^2

Question 14

What is the law of conservation of energy?

Answer 14

Energy cannot be created or destroyed, only transformed.

Question 15

Which of the following is a scalar quantity? A) Force B) Velocity C) Speed D) Acceleration

Answer 15

C) Speed

Question 16

What is the acceleration due to gravity on Earth?

Answer 16

9.81 m/s²

Question 17

True or False: The total momentum of a closed system remains constant.

Answer 17

True

Question 18

What is the formula for calculating gravitational force between two masses?

Answer 18

F = G(m1*m2)/r²

Question 19

What does the term ‘work’ refer to in physics?

Answer 19

Work is done when a force acts on an object and causes it to move.

Question 20

Fill in the blank: The principle of relativity was formulated by ____.

Answer 20

Albert Einstein

Question 21

What is the unit of electric current?

Answer 21

Ampere

Question 22

Which law states that for every action, there is an equal and opposite reaction?

Answer 22

Newton’s Third Law of Motion

Question 23

True or False: Light can travel through a vacuum.

Answer 23

True

Question 24

What is the formula for Ohm’s Law?

Answer 24

V = I * R

Question 25

What is the phenomenon where light bends as it passes from one medium to another?

Answer 25

Refraction

Question 26

Fill in the blank: The measure of the average kinetic energy of particles in a substance is called ____.

Answer 26

Temperature

Question 27

What does a positive acceleration indicate about an object's motion?

Answer 27

The object is speeding up.

Question 28

What is the principle of superposition in wave theory?

Answer 28

When two or more waves overlap, the resultant wave is the sum of the individual waves.

Question 29

What type of energy is stored in an object due to its position?

Answer 29

Potential energy

Question 30

Which particle in an atom has a negative charge?

Answer 30

Electron

Question 31

True or False: A conductor allows electric current to flow easily.

Answer 31

True

Question 32

What is the speed of light in a vacuum?

Answer 32

Approximately 3.00 x 10^8 m/s

Question 33

Fill in the blank: The force that opposes the motion of an object is called ____.

Answer 33

Friction

Question 34

What is the relationship between frequency and wavelength in a wave?

Answer 34

They are inversely proportional.

Question 35

What does the term 'thermal equilibrium' refer to?

Answer 35

A state where two bodies in contact do not exchange heat.

Question 36

True or False: Absolute zero is the lowest possible temperature.

Answer 36

True

Question 37

What is the primary force that keeps planets in orbit around the sun?

Answer 37

Gravity