Arbo Exam Review 2k17
Period
The distance traveled by an object in circular motion during T is
calorie
4.184 Joules is equal to one
allows energy to flow on path
A conductor differs from an insulator in that a conductor ________.
Torque
A force rotating around a fulcrum is
unit of work
A joule is __________.
measures the same area
According to Kepler's laws, an imaginary line from the Sun to a planet does what for different periods?
Vw goes faster
An 18-wheeler and a VW Beetle can have the same momentum if what happens?
Req decreases, I increases
As the number of resistors in parallel increases, what happens to equivalent resistance and total current?
increases
During its orbital period, as a planet moves closer to the sun, the orbital velocity of the planet ____.
potential energy
Energy that is stored and held in readiness, but not used yet is called
length of the ramp
For a ramp, the Distance In is measured as:
Potential energy that depends on the height of an object PE=mgh
Gravitational potential energy is
V=IR, I=12v/5.62ohms, I=.117amps
How much current flows when you honk the horn in your car if the resistance of the horn is 5.62 ?
Gravity X Mass
How would you calculate your weight?
friction
If all machines are supposed to be conservations of energy, why aren't they completely, 100% efficient?
stays the same, conservation law
If angular momentum is conserved then what happens when the radius is changed?
ME=PE+KE
If no other forms of energy besides kinetic and gravitational potential energy are present, then mechanical energy can be represented by the equation __________.
4 times greater than the input
If the mechanical advantage of a simple machine is 4, then
is equal to the work
If work is done on an object, the energy of the object __________.
Force
Impulse is a measure of?
1/2 mass and velocity squared
Kinetic energy is based on
force
Momentum is a measure of an object's__________
resistance
Mr. Arbo plots voltage on the y-axis and current on the x-axis. What is represented by the slope of a line plotted on his graph?
watt
One Joule per second is one ______
Unit in which electrical energy is transferred. Proportional to current and voltage
Power in an electric component is
proportional to current and voltage P=IV
Power in an electric component is
P=IR
The current through a string of home Christmas lights is 14.2 A. What power is dissipated by the lights?
energy can neither be created nor destroyed
The Law of Conservation of Energy states that
Energy-ability to do work
The ability of an object to produce a change in itself or its surroundings is
Newtons third law
The fact that the force qA exerts on qB is equal to the force that qB exerts on qA is an example of
fulcrum
The location at which a lever pivots is called:
Ideal mechanical advantage
The mechanical advantage of a compound machine is determined by
inelastic
The relationship of the force between two charged particles and their distance apart is what type?
lever and ramp
The two basic types of machine are
Joules
The unit for kinetic energy is the __________.
N-m2/c2
The units for "Coulomb's" constant k = 9 x 109 are
watts
The units for power are
repel
Two objects with the same type of charge
percent
What are the units for efficiency?
astroid
What belt is located between Mars and Jupiter?
increases
What happens to the total amount of work done with a machine compared to not using a machine?
pulley
What is a simple machine that uses grooved wheels and a rope to raise, lower, or move a load?
short circuit
What is it called in an electric circuit when a path is formed that has a very low resistance causing all of the current to by-pass the rest of the circuit?
electron
What is the Greek word for amber?
The direction that is opposite of the objects motion
What is the direction of the force vector for uniform circular motion?
kilowatt
What is the energy unit that CLECO and other electric companies use to charge customers?
Kuiper Belt
What is the name of the area beyond Neptune that is made of rocks and icy material
centrifugal force
What is the name of the fictitious force you feel when a car turns at high speed and you lean on the door?
oort cloud
What is the name of the spherical cloud in the outer reaches of our solar system?
Period (T)
What is the unit for the rate at which an event repeats itself?
12v
What is the voltage on a standard car battery?
AMA=IMA, Friction is zero, work input= work output, efficiency 100%
What is true about an ideal situation?
e-1=-1.6x10-19 coulombs
What is true about charges for sub-atomic particles?
angular velocity
What is used to represent in Physics?
Jupiter(Gravity)
What prevented the asteroid belt from becoming a planet?
voltage is the same, current divides between resistance
What things are true for resistors connected in parallel?
Angular velocity
What type of momentum conservation event involves object sticking together?
1.5v
What voltage is needed to run a TI-84 which has four AAA batteries in series?
Heliocentric
What word refers to the idea that the sun is the center of the solar system?
1/100+1/100=2/100=1/50=1/Req=50
What would be the equivalent resistance for two 100 resistors connected in parallel?
11.9/2=5.95seconds, 1 rev 360degrees/5.95seconds= 60.5degrees/sec
When SSA alum Holly Martin was on Wheel of Fortune she spun the wheel during one of her turns and it made two complete revolutions in 11.9s. What was the angular velocity of the Big Wheel?
July 20, 1969
When did Neil Armstrong first set foot on the moon?
tangent
Where is the velocity vector for an object in circular motion?
on the outer edge
Where should you sit on a merry-go-round to have the highest linear velocity?
Req=R1+R2+R3
Which equation would calculate current in a series of three resistors?
capacitor
Which of the following works as a temporary battery to give devices electricity in case of power loss?
d=meters, current(I)=amps, q=coulombs
Which quantity is correctly paired with its units?
Yohannes Guttenberg
Who determined that the paths of the planets were ellipses with the sun at one focus?
Lovell
Who was the captain of the Apollo 13 mission?
Nicholas Cupernicus
Who was the first to establish heliocentrism?
electrons rubbing against each other
Why do electricity wires get hot?
2000kg truck
Would you rather be hit by a 1000 kg car traveling at 30 m/s or a 2000 kg truck traveling at 15 m/s?
static electricity
electricity caused by rubbing
