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WorksheetsPhysics Final 1
Total questions: 61
Worksheet time: 31mins
The value 45,000 when rounded to 3 significant figures and reported in scientific notation would be
4.5 x 10^4
4.50 x 10^4
450
4.5 x 10^-4
Density describes
length per unit time
volume per liter
mass per unit volume
weight per mass
what is the standard unit of length in the metric system
kilometer
foot
yard
meter
Which metric prefix means "hundreth"
centi-
milli-
kilo-
deci
motion necessarily involves
a change in position
a change in speed
a change in direction
a change in velocity
a freely falling object
has a uniformly increasing acceleration
has a uniformly increasing displacement
has a uniformly increasing velocity
is unaffected by gravity
all of the following may be represented by vectors except
velocity
speed
acceleration
force
a mass is accelerated when ______ acts upon the mass
no force
any force
a balanced force
an unbalanced force
two equal and opposite forces of 6.0 N act on an object. The unbalanced force on the object
is 0 N
is 6.0 N
is 8 N
is 12 N
two objects are released from the same height at the same time, and one has twice the weight of the other. ignoring air resistance
the heavier object hits the ground first
the lighter object hits the ground first
they both hit at the same time
whichever hits first depends on the distance dropped
the SI base units making up the newton are
kg m/s
kg m/s^2
g m/s^2
kg^2/s
the natural tendency of an object to remain at rest or in motion with a constant velocity is called
none of these
an unbalanced force
an external force
inertia
which of following is a possible unit of acceleration
m x s
m/s^2
m^2/s
m/s
when you push on a stationary object on a horizontal surface and it doesn't move, what kind of force is most likely opposing your efforts
normal force
gravitational force
sliding friction force
static friction force
according to newtons second law, the force required to accelerate an object is equal to
its mass times the acceleration
its acceleration divided by its mass
its mass divided by the velocity
its weight times the velocity
which of the following would be the same for a person on the moon rather than on the earth
weight
mass
maximum jumping height
the amount of time for an object to fall 2 meters from rest
an object will _______ in a fluid if its average density is _____ the density of the fluid
float; less than
float; greater than
sink; less than
sink; equal to
an object transported from earths surface to the surface of the moon has
different mass and different weight
the same mass and the same weight
the same mass, but different weight
the same weight, but different mass
none of these
Explain distance
is how far one has traveled
length between the objects resting point and where it has ended
Explain displacement
length between the objects resting point and where it has ended
how far one has traveled
explain balanced forces
two equal forces pushing against one another causing no movement or change
is when two objects are of unequal mass/weight causing one side to move
explain unbalanced forces
two equal forces pushing against one another causing no movement or change
is when two objects are of unequal mass/weight causing one side to move
Work is defined as force times
parallel distance
distance
time
perpendicular distance
one joule per second (J/s) is a
newton
watt
kilogram
second
which of the following is a vector quantity
work
power
force
none of these
the kinetic energy of a pendulum is least
when its potential energy is least
when its total energy is greatest
at the bottom of its swing
at the top of its swing
which of the following four objects has the greatest kinetic energy
an object of mass m moving with a speed 4v
an object of mass 3m moving with speed 2v
an object of mass 4m moving with speed v
an object of mass 2m moving with speed 3v
the energy of position is called
heat
kinetic energy
potential energy
power
if you lift a 15-N weight vertically 30m above the ground, you are
doing work against gravity
doing work against friction
doing work against inertia
doing none of these
the energy of a system
always increases
always remains constant
increases when work is done by the system
increases when work is done on the system
power is
the time rate of doing velocity
the time rate of doing work
the time rate of doing momentum
the tie rate of doing force
a temperature of -15 degrees Celsius is equivalent to _____ Kelvin
258
278
-15
-268
a Celsius degree is
smaller than the Fahrenheit degree
the same size as the kelvin
larger than the kelvin
the same size as the Fahrenheit degree
the average kinetic energy of the molecules in a gas is a measure of
temperature
volume
density
heat content
the suns rays are transmitted to earth by means of
convection
radiation
temperature
conduction
a change of phase takes place at a constant
pressure
heat
volume
temperature
the energy involved in a phase change is called the
specific heat
thermal energy
internal energy
latent heat
when a material is found to have a definite volume but no definite shape, and when it assumes the shape of the container in which it is placed, what is the phase of the material
plasma
solid
liquid
gas
when a material is found to have a definite volume and definite shape, and when it doesn't require a container to maintain its shape, what is the phase of the material
liquid
gas
solid
plasma
Which of the following characterize a wave
period
all of these
wavelength
amplitude
wave velocity is inversely proportional to
all of these
amplitude
wavelength
period
the major difference between transverse and longitudinal waves is the
size of the waves
direction of the wave motion
phase difference
direction of the particle displacement with respect to the direction of wave motion
which of the following radiations has the longest wavelength
ultraviolet
visible
infared
x-rays
which of the following radiations has the greatest frequency
infrared
x-rays
visible
ultraviolet
light waves travel fastest in
a vacuum
water
glass
air
light can travel to earth from a distant star, but sound cannot. why is this
light is a longitudinal wave, and sound is a transverse wave
the sun does not make sound
light is an electromagnetic wave, and sound requires a medium
the statement is false, both light and sound can travel in empty space
the law of reflection applies to
specular reflection
diffuse reflection
irregular reflection
all of these
a light wave traveling in air strikes a plane mirror at an angle of 30 degrees relative to the normal. the wave is reflected at an angle of
30 degrees relative to the surface
none of these
30 degrees relative to the normal
60 degrees relative to the normal
a pencil partially submerged in a glass of water appears broken or offset because of
diffraction
polarization
interference
refraction
the bending of light because of a speed change as it moves from one medium to another is called
the doppler effect
diffraction
refraction
reflection
the ratio of the speed of light in a vacuum to the speed of light in a medium is known as the index of
diffraction
refraction
reflection
none of these
the separation of white light into its component colors is called
diffraction
polarization
refraction
dispersion
all real images
cannot be focused on a screen
are inverted
can be focused on a screen
are upright
an ____ image is defined as one that cannot be brought to a focus on a screen
virtual
real
upright
inverted
a visual defect wherein a person can see nearby objects by not distance
destructive interference
dispersion
nearsightedness
farsightedness
electric charge is measured in units of
newtons
volts
watts
coulombs
the unit for current is the
volt
ampere
ohm
coulomb
if the voltage across a resistor is doubled, the current will
be doubled
remain the same
be cut to one-fourth
be cut in half
in a circuit with different resistors in parallell,
the total resistance is larger than the value of the largest resistor
the current is the seam through each resistor
the total resistance is larger than the value of the smallest resistor
the voltage is the same across
the angle between true north and the direction in which a compass needle points is called the angle of
attack
inclination
declination
Dip
a ______ is an elementary particle with a charge of +1.6 x 10^-19 coulombs
neutron
electron
proton
atom
