Study your flashcards anywhere!
Download the official Cram app for free >
 Shuffle
Toggle OnToggle Off
 Alphabetize
Toggle OnToggle Off
 Front First
Toggle OnToggle Off
 Both Sides
Toggle OnToggle Off
 Read
Toggle OnToggle Off
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
A key: Read text to speech.a key
28 Cards in this Set
 Front
 Back
Acceleration due to gravity

The acceleration produced in a body due to the earth's attraction is called acceleration due to gravity. It is denoted by the letter g. Its SI unit is m/s². On the surface of the earth, its average value is 9.8m/s².


Acceleration

The rate of change of velocity of a moving object


Amp[Ampere]

Unit of electric current. It is equivalent to coulomb/sec.


Amplitude [of waves]

The maximum displacement of particles of the medium from their mean positions during the propagation of a wave


Angle of incidence

Angle of an incident (arriving) ray or particle to a surface; measured from a line perpendicular to the surface (the normal)


Angle of reflection

Angle of a reflected ray or particle from a surface; measured from a line perpendicular to the surface (the normal)


Avogadro's Number

6.02 x 10^23


Centripetal force

The force required to pull an object out of its natural straightline path and into a circular path


Coulomb

Unit used to measure quantity of electric charge


Diffraction

The bending of light around the edge of an opaque object


Doppler effect

An apparent shift in the frequency of sound or light due to relative motion between the source of the sound or light and the observer


First law of motion

Every object remains at rest or in a state of uniform straightline motion unless acted on by an unbalanced force


Frequency (of waves)

The number of waves produced per second is called its frequency.[Hz]


Index of refraction

The ratio of the speed of light in a vacuum to the speed of light in a material


Inertia

The property of matter that causes it to resist any change in its state of rest or of uniform motion.


Joule

Metric unit used to measure work and energy; can also be used to measure heat; equivalent to newtonmeter


Net force

The resulting force after all vector forces have been added; if a net force is zero, all the forces have canceled each other and there is not an unbalanced force


Newton

A unit of force defined as kg.m/sec^2


Newton's second law of motion

The rate of change of momentum is equal to the force applied OR the force acting on a body is directly proportional to the product of its mass and acceleration produced by the force in the body.


Newton's third law of motion

To every action there is an equal and opposite reaction


Ohm

Unit of resistance; equivalent to volts/amps


Power

The rate of doing work is called power. Power is a scalar quantity. The SI unit of power is Watt ( 1 W = 1 J/sec)


Refraction

A change in the direction of travel of light, sound, or other waves crossing a boundary


Scalar Quantity

is described completely by its magnitude


Volt

Unit of potential difference equivalent to joules/coulomb


Watt

Metric unit for power; equivalent to joule/sec


Work

Force x Displacement in the direction of the force


Work

Work is done when a force acting on a body displaces it. Work is a scalar quantity. The SI unit for work is Joule
