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A mix of everything Flashcards

(54 cards)

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1
Q

What is the formula for calculating velocity?

A

Velocity = Displacement / Time

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2
Q

True or False: Kinematics deals with the motion of objects without considering the forces that cause the motion.

A

True

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3
Q

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

A

Joule

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4
Q

What is the difference between speed and velocity?

A

Speed is a scalar quantity while velocity is a vector quantity.

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5
Q

What is Newton’s second law of motion?

A

Force equals mass times acceleration (F = ma).

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6
Q

What does the term ‘stress’ refer to in materials science?

A

Stress is the force applied per unit area.

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7
Q

What is the formula for kinetic energy?

A

Kinetic Energy = 1/2 mv^2, where m is mass and v is velocity.

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8
Q

True or False: A solid can deform permanently under stress.

A

True

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9
Q

What is the principle of conservation of energy?

A

Energy cannot be created or destroyed, only transformed from one form to another.

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10
Q

What does Ohm’s Law state?

A

Voltage = Current x Resistance (V = IR).

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11
Q

Fill in the blank: The speed of light in a vacuum is approximately ______ meters per second.

A

299,792,458

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12
Q

What is the wavelength of a wave?

A

The distance between successive crests or troughs of a wave.

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13
Q

What is a photon?

A

A photon is a quantum of light or electromagnetic radiation.

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14
Q

What is the purpose of a laser?

A

A laser produces a coherent beam of light through stimulated emission of radiation.

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15
Q

True or False: All electromagnetic waves travel at the same speed in a vacuum.

A

True

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16
Q

What is the formula for potential energy in a gravitational field?

A

Potential Energy = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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17
Q

What is the difference between elastic and plastic deformation?

A

Elastic deformation is reversible, while plastic deformation is permanent.

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18
Q

What is frequency in relation to waves?

A

Frequency is the number of complete cycles of a wave that pass a point in one second.

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19
Q

What does the term ‘current’ refer to in electricity?

A

Current is the flow of electric charge.

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20
Q

Fill in the blank: The unit of electric resistance is the ______.

A

Ohm

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21
Q

What is the relationship between wavelength and frequency?

A

Wavelength is inversely proportional to frequency.

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22
Q

What is the definition of work in physics?

Study These Flashcards
A

Work is done when a force causes displacement in the direction of the force.

23
Q

What is Hooke’s Law?

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A

The force exerted by a spring is proportional to its extension (F = kx).

24
Q

True or False: The total mechanical energy of a system is the sum of its kinetic and potential energy.

25
What is the formula for calculating acceleration?
Acceleration = Change in velocity / Time taken.
26
What is a transverse wave?
A wave in which the particle displacement is perpendicular to the direction of wave propagation.
27
What is a longitudinal wave?
A wave in which the particle displacement is parallel to the direction of wave propagation.
28
Fill in the blank: The frequency of a wave is measured in ______.
Hertz
29
What is the principle of superposition in wave theory?
When two or more waves overlap, the resulting wave is the sum of the individual waves.
30
What is the speed of sound in air at room temperature?
Approximately 343 meters per second.
31
What is the formula for gravitational force between two masses?
F = G(m1*m2)/r^2, where G is the gravitational constant.
32
True or False: Electric fields are created by electric charges.
True
33
What is the definition of a wave?
A disturbance that transfers energy through space or matter.
34
Fill in the blank: The refractive index of a medium is defined as the ratio of the speed of light in a vacuum to the speed of light in that medium, and is denoted as ______.
n
35
What is the principle of conservation of momentum?
In a closed system, the total momentum before an event is equal to the total momentum after the event.
36
What is a scalar quantity?
A quantity that has magnitude but no direction.
37
What is a vector quantity?
A quantity that has both magnitude and direction.
38
Fill in the blank: The work-energy principle states that the work done on an object is equal to the change in its ______.
kinetic energy
39
What is the unit of power?
Watt (W)
40
What is the formula for calculating pressure?
Pressure = Force / Area
41
True or False: Light behaves as both a particle and a wave.
True
42
What is the phenomenon of refraction?
The bending of light as it passes from one medium to another.
43
What does the term 'amplitude' refer to in wave mechanics?
The maximum displacement of points on a wave from its rest position.
44
What is the formula for calculating the period of a wave?
Period = 1 / Frequency
45
What is the principle behind a laser?
Stimulated emission of radiation results in coherent light.
46
Fill in the blank: The total energy in a closed system remains constant, according to the principle of ______.
conservation of energy
47
What is the difference between elastic and inelastic collisions?
Elastic collisions conserve both momentum and kinetic energy; inelastic collisions conserve momentum but not kinetic energy.
48
What is the definition of electric potential?
Electric potential is the work done per unit charge to move a charge from a reference point to a specific point in an electric field.
49
Fill in the blank: An object in free fall experiences ______ acceleration due to gravity.
constant
50
What is the formula for calculating angular velocity?
Angular Velocity = Change in angle / Time
51
What is the law of reflection?
The angle of incidence equals the angle of reflection.
52
True or False: The electric field strength is directly proportional to the charge and inversely proportional to the distance squared.
True
53
What is the formula for calculating work done against gravity?
Work = mgh, where m is mass, g is the acceleration due to gravity, and h is height.
54
What is the effect of temperature on the resistance of a conductor?
Resistance typically increases with an increase in temperature.

Physics (13 decks)

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