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Midterm
review
90
Physics
11th Grade
10/04/2015

Additional Physics Flashcards

 


 

Cards

Term
what is the formula for impulse?
Definition
force times the change in velocity
Term
What is impulse measured in?
Definition
N*s
Term
Whats the formula for momentum?
Definition
m times the change in velocity
Term
What are the units for momentum?
Definition
kg*m/s
Term
What is the equivalent of impulse?
Definition
momentum
Term
What can result from either a large force and short time or a mislay force and long time?
Definition
a large impulse
Term
What is the product of a rotating object's moment of inertia and angular velocity?
Definition
angular momentum
Term
The angular velocity of a rotating object changes only if what is applied to it?
Definition
torque
Term
Since mass cannot change, if momentum is constant, what else is constant?
Definition
velocity
Term
What kind of system is one with no outside forces?
Definition
closed system
Term
In a closed system, what happens to momentum?
Definition
it is conserved
Term
If two objects of varying size collide, the forces they exert on each other will be equal and opposite in direction. Which law does this follow?
Definition
Newton's 3rd Law
Term
What is the product of average force on an object and the time interval over which it acts?
Definition
impulse
Term
If a rolling ball hits a stationary ball and comes to a stop, what of the rolling ball's is transferred to the stationary ball?
Definition
momentum
Term
If a rolling ball hits a stationary ball and comes to a stop, all of the rolling ball's momentum is transferred to the stationary ball, and what will it do?
Definition
roll with the same velocity in the same direction
Term
What is it called when the net external force on a closed system is zero?
Definition
isolated system
Term
What is the formula for Work?
Definition
Fd
Term
What are the units for work?
Definition
N*m or Joules
Term
What is the ability of an object to produce a change in itself or the world around it?
Definition
energy
Term
What is energy of motion?
Definition
kinetic
Term
What is the formula for energy of motion (kinetic)?
Definition
.5mv^2
Term
What are the units for all energy?
Definition
Joules
Term
What is one Joule?
Definition
1kg*m^2/s^2
Term
Who is the Joule named after?
Definition
James Joule
Term
In what is "when work is done on an object, the result is a change in kinetic energy" stated?
Definition
Work Energy Theorem
Term
What is the transfer of energy by mechanical means?
Definition
work
Term
If force and distance are at right angles, what is work?
Definition
zero
Term
What weighs about one Newton?
Definition
an apple
Term
A force exerted which way to the motion does no work?
Definition
perpendicular
Term
What is the formula for power?
Definition
work/time
Term
What is the rate at which external force changes the energy of a system?
Definition
power
Term
Time affects power but not what?
Definition
work
Term
A machine eases the load by changing what of a force to match the force to the capability of machine or person?
Definition
magnitude or direction
Term
What is not a source of energy?
Definition
machine
Term
What does a machine aid in?
Definition
the transfer of energy, but it cannot create it
Term
What is the work a machine does?
Definition
output work
Term
What is the kind of work that you do?
Definition
input work
Term
Which type of work cannot exceed the other?
Definition
output
Term
What is the force exerted by the machine called?
Definition
resistance force
Term
What is the force exerted by a person on a machine?
Definition
effort force
Term
What is the ratio of output work to input work?
Definition
efficiency
Term
What is equal to the displacement of a load?
Definition
ideal mechanical advantage
Term
What is the ratio of resistance force to effort force?
Definition
mechanical advantage
Term
What does a machine do if the mechanical advantage is greater than one?
Definition
increases the force applied by a person
Term
What kind of machine has equal input and output work?
Definition
ideal machine
Term
What is machine consisting of two or more simple machines that are linked in such a way that the resistance force of one machine becomes the effort force to the second?
Definition
compound machine
Term
List all the simple machines from the notes.
Definition
lever, pulley, wheel and axle, inclined plane, wedge, screw
Term
length
Definition
meters
Term
time
Definition
seconds
Term
mass
Definition
kilograms
Term
temperatrue
Definition
kelvin
Term
electric current
Definition
ampere
Term
luminous intensity
Definition
candela
Term
amount of a substance
Definition
mole
Term
What are quants that include magnitude and direction?
Definition
vectors
Term
What are quantities that involve only numbers with no indication of direction?
Definition
scalars
Term
What is a push or pull that causes a change in motion?
Definition
force
Term
What is the force exerted by a surface on an object and acts perpendicular to and away from a surface?
Definition
normal force
Term
what acts to oppose sliding motion between surfaces?
Definition
friction
Term
what cases motion by acting in the same direction as the acceleration of the object?
Definition
thrust force
Term
What ist he force due to gravitational attraction between two objects termed?
Definition
weight
Term
What does the acronym LASER stand for?
Definition
light amplification by stimulated emission of radiation
Term
What generic equation represents a direct relationship?
Definition
y=kx
Term
What kind of line does a direct relationship form?
Definition
straight
Term
What is the generic equation for an inverse relationship?
Definition
y=k/x
Term
What kind of graph does an inverse relationship form?
Definition
hyperbola
Term
What is the generic equation for a quadratic relationship?
Definition
y=kx^2
Term
What kind of graph does a quadratic equation form?
Definition
parabola
Term
What is the value with units of the speed of light?
Definition
3 x 10^8 m/s
Term
What is the mass of the Earth with units?
Definition
5.98 x 10^24 kg
Term
What is the mass with units of the Sun?
Definition
1.99 x 10^30
Term
what is the numerical value with unites for the charge of an electron?
Definition
1.602 x 10^-19 Coulombs
Term
What is the symbol for acceleration due to gravity?
Definition
g
Term
What is the value of acceleration due to gravity on the moon?
Definition
1.62 m/s^2
Term
What is the acceleration due to gravity on Earth?
Definition
9.8 m/s^2
Term
What is the symbol for universal gravitation?
Definition
G
Term
What is the value of G?
Definition
6.67 x 10^-11 Nm^2/kg^2
Term
When a planet gets closer to the Sun, what happens to its speed?
Definition
it speeds up
Term
What was Cavendish's famous experiment called?
Definition
"weighing the Earth"
Term
For an object moving with circular motion, the direction of centripetal acceleration is always towards where?
Definition
center of the circle
Term
What is the distance between the earth and the sun often expressed as?
Definition
one astronomical unit
Term
What does the slope of a position time graph represent?
Definition
velocity
Term
what does the slope of a velocity time graph represent?
Definition
acceleration
Term
What does the slope of the tangent to the curve on a velocity time graph represent?
Definition
instantaneous acceleration
Term
What does a flat line on a velocity time graph represent?
Definition
constant velocity and zero acceleration
Term
What does a flat line on a position time graph represent?
Definition
zero velocity and standing still
Term
What is the formula for Newton's law of universal gravitation?
Definition
F=Gm1m2/r^2
Term
If the average velocity a particle is zero in the same time interval then what is the displacement?
Definition
zero
Term
What is the lowest possible temperature for matter?
Definition
absolute zero
Term
What is absolute zero in celsius?
Definition
-273.15
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