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Q 1/107
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If two are cars a moving in opposite directions but going moving at the same rate of 15 m/s. It true to say they are going the same _________________.
30
direction
acceleration
velocity
speed
Q 2/107
Score 0
Volume can be given in all of the following units EXCEPT:
30
cm^3
kg
mL
L
107 questions
Q.
If two are cars a moving in opposite directions but going moving at the same rate of 15 m/s. It true to say they are going the same _________________.
1
30 sec
Q.
Volume can be given in all of the following units EXCEPT:
2
30 sec
Q.
What is friction?
3
30 sec
Q.
Acceleration is measured in units of _______________________________.
4
30 sec
Q.
Sliding friction between two objects that are moving past each other can be increased by
5
30 sec
Q.
A tennis ball with a mass of 2.0 kg is traveling with a velocity of 3.5 đť‘š/đť‘ EASTWARD. What is the momentum of the tennis ball? p=m * v
6
30 sec
Q.
Energy is measured in units of _____________________.
7
30 sec
Q.
A car with a mass of 1290.1 kg is traveling with a velocity of 22.2 đť‘š/đť‘ NORTHWARD. What is the kinetic energy of the car?
8
30 sec
Q.
Which graph best matches a person walking away at a constant speed forward?
9
30 sec
Q.
Which graph best matches a person walking away slowing and returning quickly?
10
30 sec
Q.
A duck flies 60 meters in 10 seconds. What is the duck’s speed?
11
30 sec
Q.
A beetle crawls 12 cm/minute for ten minutes. How far did it crawl in m/s? Beware of units!!!
12
30 sec
Q.
What is the final velocity of a car that accelerates from rest at 9.0 m/s2 for 8.0 s?
13
30 sec
Q.
A pitcher throws a ball at 40.0 m/s and the ball is electronically timed to arrive at home plate 0.4625 s later. What is the distance from the pitcher to the home plate?
14
30 sec
Q.
The rate of change of velocity is called
15
30 sec
Q.
Displacement is the total distance traveled in a trip.
16
30 sec
Q.
The line segment BC on the distance vs. time graph given above indicates that the object is moving at a constant speed.
17
30 sec
Q.
A scalar is a measurement that only includes the magnitude and units (ex: 4 m/s)
18
30 sec
Q.
7.0Ă—101 m/s
19
30 sec
Q.
2.0 m/s2 west
20
30 sec
Q.
A car is traveling west, they cover 392 miles in 2.5 hours. What is the velocity? What is the speed?
21
30 sec
Q.
When a falling object reaches terminal velocity, the force of gravity __________ the force of air resistance.
22
30 sec
Q.
In which direction is centripetal force?
23
30 sec
Q.
__________ measures an object's tendency to resist changing its motion.
24
30 sec
Q.
Newton's first law of motion states that __________.
25
30 sec
Q.
Newton's second law of motion is __________.
26
30 sec
Q.
Newton's third law of motion states that __________.
27
30 sec
Q.
A(n) __________ is a push or a pull that one body exerts on another.
28
30 sec
Q.
Forces that cancel each other are called __________ forces.
29
30 sec
Q.
What is the unit of force called?
30
30 sec
Q.
What is the weight of a 20 kg box on the Earth?
31
30 sec
Q.
What is the acceleration due to gravity on a planet where a 40 kg box weighs 100 N?
32
30 sec
Q.
If the truck has a mass of 2,000 kilograms and is moving at 35 m/s, what is its momentum?
33
30 sec
Q.
An 8-kg bowling ball is rolling in a straight line toward you. If its momentum is 16 kg·m/sec, how fast is it traveling?
34
30 sec
Q.
The SI system is based on powers of _____.
35
30 sec
Q.
The height of a building is 25.5 meters. What is the height of the building in centimeters?
36
30 sec
Q.
In the acronym K-H-D-B-D-C-M. was does the M stand for?
37
30 sec
Q.
Convert 1750 ml to liters.
38
30 sec
Q.
Express 0.0003711 in scientific notation in 2 sig figs.
39
30 sec
Q.
Perform the calculation with the correct number of significant digits.
22.81 + 2.2457
40
30 sec
Q.
Express 4,610,000 in scientific notation using 3 sig figs and 2 sig figs.
41
30 sec
Q.
Perform the calculation with the correct number of significant digits.
3.2215 - 1.67 - 2.3
42
30 sec
Q.
You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density?
43
30 sec
Q.
The density of an object is
44
30 sec
Q.
You have a different rock with a volume of 30cm3 and a mass of 60g. What is its density?
45
30 sec
Q.
What is the density of CO gas if 0.196 g occupies a volume of 100 ml?
46
30 sec
Q.
The accumulation of excess electric charge
47
30 sec
Q.
A material in which electrons are able to move
48
30 sec
Q.
Transferring charge when objects are nearby each other.
49
30 sec
Q.
A static discharge differs from an electric current in that a static discharge
50
30 sec
Q.
Lightning is ___.
51
30 sec
Q.
The best electrical conductors are
52
30 sec
Q.
A substance that does not allow electrons to flow easily
53
30 sec
Q.
The net movement of electric charges in a single direction
54
30 sec
Q.
The statement, current is equal to the voltage divided the resistance is known as
55
30 sec
Q.
Current that does not reverse direction
56
30 sec
Q.
Current that does reverse direction
57
30 sec
Q.
The path that electric current flows through
58
30 sec
Q.
A circuit that has two or more separate branches for current is a
59
30 sec
Q.
A path that allows only one route for a current is called a
60
30 sec
Q.
No current will flow through a closed circuit.
61
30 sec
Q.
You have a string of lights and notice that one bulb has gone out but the rest of the string is still on. How are the lights wired?
62
30 sec
Q.
The magnetic force exerted by a magnet is strongest at
63
30 sec
Q.
The region around a magnet where the magnetic forces act is the
64
30 sec
Q.
The atoms in a magnet are
65
30 sec
Q.
Every magnet has ___ pole(s).
66
30 sec
Q.
Magnets with similar poles in close proximity will
67
30 sec
Q.
A(n) ___ is a temporary magnet made by wrapping a wire around an iron core.
68
30 sec
Q.
The process of producing an electric current by moving a loop of wire through a magnetic field is called ____________________.
69
30 sec
Q.
The strength of magnetic force in an electromagnet is __ by increasing the current through the coil.
70
30 sec
Q.
A disturbance that transfers energy from place to place is called a wave.
71
30 sec
Q.
Mechanical waves are created when a source of energy causes a medium to
72
30 sec
Q.
The speed of a wave is its wavelength multiplied by its
73
30 sec
Q.
The bending of waves due to a change in medium is called
74
30 sec
Q.
The interaction between two waves that meet is called
75
30 sec
Q.
Waves combine to make a wave with larger amplitude in a process called
76
30 sec
Q.
The image is showing interference when the crest of one wave aligns with the trough of another wave. This is called _________________ interference.
77
30 sec
Q.
The image is showing interference when the crest of one wave aligns with the crest of another wave. This is called _________________ interference.
78
30 sec
Q.
Frequency is measured in units called
79
30 sec
Q.
When a wave hits a surface through which it CANNOT pass and bounces back, it undergoes
80
30 sec
Q.
Waves crest & trough combine to produce a smaller or zero-amplitude wave in a process called
81
30 sec
Q.
Refraction occurs when a wave
82
30 sec
Q.
When a wave moves through an opening in a barrier, it ____________________________________ which is called diffraction.
83
30 sec
Q.
What is the wavelength of a 25-hertz wave traveling at 350 cm/s? beware of units!
84
30 sec
Q.
The wave in the image is a ___________________ wave.
85
30 sec
Q.
The wave in the image is a ___________________ wave.
86
30 sec
Q.
What is the frequency of a wave that has a speed of 365 m/s and a wavelength of 1.70 m?
87
30 sec
Q.
What is the amplitude of the wave in the diagram below?
88
30 sec
Q.
A periodic and repeating disturbance in a lake creates waves which emanate outward from its source to produce circular wave patterns. If the frequency of the source is 2.00 Hz and the wave speed is 5.00m/s then the distance between adjacent wave crests is ___ meter.
89
30 sec
Q.
A pendulum makes exactly 63 vibrations in 20.0 s. Its period is ____. (Be cautious of the units.)
90
30 sec
Q.
One cycle of a wave is 1.3 s long. What is its frequency?
91
30 sec
Q.
The frequency of a wave is 7 Hz. Find the period of the wave.
92
30 sec
Q.
An ocean wave is about 15 m long. Its period is 18 s. Find the frequency of the wave
93
30 sec
Q.
Transfer of energy to cause motion in the direction of force is called motion.
94
30 sec
Q.
What is the amount of work done by a person who weighs 68 N who climbs a 2.8m tall flight of stairs?
95
30 sec
Q.
The unit for energy is
96
30 sec
Q.
What two things does power depend on?
97
30 sec
Q.
A motor has a power of 2000 W. If the motor lifts a large bag of flour (5000 N) 20m into the air, how long will it take?
98
30 sec
Q.
How much work can be done by a 3.2 W machine in 45s?
99
30 sec
Q.
What is the KE of an object moving at 50 m/s and has a mass of 97 kg.
100
30 sec
Q.
Energy is a scalar.
101
30 sec
Q.
324 J of work is done in 15 seconds. The object being moved weighs 12 kg. What is the distance the object is moved?
102
30 sec
Q.
Kinetic energy depends on _____ more than ________
103
30 sec
Q.
You hold a 5kg ball 2m above the ground. What is the gravitational potential energy of the ball
104
30 sec
Q.
With an elevation of 5334 m above sea level, the village of Aucanquilca, Chile is the highest inhabited town in the world. What would be the gravitational potential energy associated with a 64 kg person in Aucanquilca?
105
30 sec
Q.
If you have a gravitational potential energy of 970 J and a mass of 34 kg. What height would you have to fall from?
