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Q 1/108
Score 0
when waves subtract apmltudes
30
destrucrive interfercnece
Q 2/108
Score 0
when waves add up togert
30
construstive interfernce
108 questions
Q.
when waves subtract apmltudes
1
30 sec
Q.
when waves add up togert
2
30 sec
Q.
they make a new wave then carry on how they were before
3
30 sec
Q.
nonmechinal
4
30 sec
Q.
matter
5
30 sec
Q.
twice
6
30 sec
Q.
I=v/r
7
30 sec
Q.
rubbing and touching
8
30 sec
Q.
decrese
9
30 sec
Q.
momentum=mass* velocity
10
30 sec
Q.
power=work/time
11
30 sec
Q.
work W is equal to the force f times the distance d
12
30 sec
Q.
p=w/t
13
30 sec
Q.
w=fd
14
30 sec
Q.
the transferring of electrical charge between objects by touching or rubbing
15
30 sec
Q.
sum of the potential energy and kinetic energy in a system
16
30 sec
Q.
energy that is due to the gravitational forces between objects
17
30 sec
Q.
states that energy cannot be created or destroyed
18
30 sec
Q.
Energy that does not fall into the category of energy from position or movement (KE and PE)
19
30 sec
Q.
the rate at which energy is converted; measured in watts
20
30 sec
Q.
states that charge can be transferred from one object to another but cannot be created or destroyed
21
30 sec
Q.
a region surrounding every electric charge in which a force of attraction or repulsion is exerted on other electric charges
22
30 sec
Q.
material, such as copper wire, through which electrons can move easily
23
30 sec
Q.
material in which electrons and thermal energy are not able to move easily
24
30 sec
Q.
a repeating disturbance that transfers energy through matter or space
25
30 sec
Q.
matter through which a wave travels
26
30 sec
Q.
attractive force between two objects that depends on the masses of the objects and the distance between them.
27
30 sec
Q.
a wave that can travel only through matter
28
30 sec
Q.
the gravitational force exerted on an object
29
30 sec
Q.
a region of space that has a physical quantity (such as a force) at every point
30
30 sec
Q.
wave in which the matter in the medium moves at right angles to the direction of the wave, has crests and troughs
31
30 sec
Q.
states that an object moving at a constant velocity keeps moving at that velocity unless an unbalanced force acts on it
32
30 sec
Q.
a wave in which the matter in the medium moves back and forth along the direction that the wave travels
33
30 sec
Q.
a measure of the size of the disturbance of a wave, related to the energy that it carries
34
30 sec
Q.
distance between one point on a wave and the nearest point just like it
35
30 sec
Q.
the number of wavelengths that pass a fixed point each second; is expressed in hertz (Hz)
36
30 sec
Q.
the process of two or more waves overlapping and combining to form a new wave
37
30 sec
Q.
the bending of waves around an obstacle; can also occur when waves pass through a narrow opening
38
30 sec
Q.
the bending of a wave caused by a change in its speed as it moves from one medium to another
39
30 sec
Q.
the process by which an object is made to vibrate by absorbing energy at its natural frequencies
40
30 sec
Q.
states that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force exerted on it divided by its mass
41
30 sec
Q.
the tendency of an object to resist any change in its motion
42
30 sec
Q.
device that uses electromagnetic induction to convert mechanical energy to electrical energy
43
30 sec
Q.
the accumulation of excess electric charge on an object
44
30 sec
Q.
the net movement of electric charges in a single direction, measured in amperes (A)
45
30 sec
Q.
related to the force that causes electric charges to flow; measured in volts (V)
46
30 sec
Q.
large wheel that rotates when pushed by steam, wind, or water and provides mechanical energy to a generator
47
30 sec
Q.
states that when one object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction
48
30 sec
Q.
states that the current in a circuit equals the voltage difference divided by the resistance
49
30 sec
Q.
device that uses electromagnetic induction to increase or decrease the voltage of an alternating current
50
30 sec
Q.
the maximum speed an object will reach when falling through a substance, such as air
51
30 sec
Q.
force that opposes the motion of objects that move through the air
52
30 sec
Q.
a closed path that electric current follows
53
30 sec
Q.
the interaction of electric charges and magnets.
54
30 sec
Q.
tendency for a material to oppose electron flow and change electrical energy into thermal energy and light; measured in ohms
55
30 sec
Q.
describes the fall of an object on which only the force of gravity is acting
56
30 sec
Q.
states that if no external forces act on a group of objects, their total momentum does not change
57
30 sec
Q.
energy that is due to chemical bonds
58
30 sec
Q.
the ability to cause change, measured in joules
59
30 sec
Q.
device that makes doing work easier by increasing the force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied
60
30 sec
Q.
machine that is a combination of two or more simple machines
61
30 sec
Q.
a region or set of regions around which a boundary can be defined
62
30 sec
Q.
the complete range of electromagnetic waves placed in order of increasing frequency
63
30 sec
Q.
encodes information as a string of 1's and 0's
64
30 sec
Q.
massless energy-containing particle that electromagnetic waves sometimes behave like; the frequency of the electromagnetic wave increases with the energy of the particle
65
30 sec
Q.
a smoothly varying signal produced by continuously changing the voltage or current in a circuit
66
30 sec
Q.
waves created by vibrating electric charges; consists of vibrating electric and magnetic fields, and can travel through a vacuum or through matter
67
30 sec
Q.
energy that is stored due to the interactions between objects
68
30 sec
Q.
a machine that does work with only one movement of the machine
69
30 sec
Q.
exact, agreed-upon quantity used for comparison
70
30 sec
Q.
energy that is stored by compressing or stretching an object
71
30 sec
Q.
the amount of matter in an object
72
30 sec
Q.
the dimensions, capacity, or amount of something
73
30 sec
Q.
mass per unit volume of a material
74
30 sec
Q.
the energy a moving object has because of its motion; determined by the mass and speed of the object
75
30 sec
Q.
International System of Units - the improved, universally accepted version of the metric system that is based on multiples of ten and includes the meter (m), liter (L), and kilogram (kg)
76
30 sec
Q.
amount of space occupied by an object
77
30 sec
Q.
anything that takes up space and has mass
78
30 sec
Q.
refers to the emission of electrons from a metal when light shines on the metal
79
30 sec
Q.
a coding system that relies on the use of bits-0s and 1s-to encode digital information.
80
30 sec
Q.
energy carried by an electromagnetic wave
81
30 sec
Q.
a change in an object's position relative to a reference point
82
30 sec
Q.
the length an object travels, measured in SI units of meters
83
30 sec
Q.
force that opposes the sliding motion between two touching surfaces
84
30 sec
Q.
distance and direction of an object's change in position from the starting point.
85
30 sec
Q.
rate of change of velocity; can be calculated by dividing the change in the velocity by the time it takes the change to occur
86
30 sec
Q.
sum of all of the forces that are acting on an object
87
30 sec
Q.
distance an object travels per unit of time
88
30 sec
Q.
A push or pull exerted on an object
89
30 sec
Q.
the speed and direction of a moving object
90
30 sec
Q.
The law of conservation of momentum
91
30 sec
Q.
air resistance
92
30 sec
Q.
mass, gravitational field strength
93
30 sec
Q.
force due to gravity
94
30 sec
Q.
mass
95
30 sec
Q.
5 m/s squared
96
30 sec
Q.
the cannon will roll back with an equal force
97
30 sec
Q.
Whenever one object exerts a force on another object, the second object exerts an equal and opposite on the first.
98
30 sec
Q.
The acceleration of an object depends on the mass of the object and the amount of force applied.
99
30 sec
Q.
An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
100
30 sec
Q.
The sum of all forces
101
30 sec
Q.
unit and direction
102
30 sec
Q.
m/s
103
30 sec
Q.
Gravitational Potential Energy = Mass * Gravity * Height
