If an object rotates about an axis that passes through itself, it has ___________.
spin
100
Convert 45 rpm to rad/s
4.71 rad/s
100
________ ________ is the unbalanced force that produces the centripetal acceleration
Centripetal Force
100
This is the theory that everything orbits around the sun.
heliocentric theory.
100
What is the name of the 0-14 scale that measures acidity?
pH Scale
200
The velocity vector of a particle in circular motion is tangent to the circular path of the particle. This velocity is called ________ ________
tangential velocity
200
Convert 5 rotations every 30 seconds to rad/s.
1.047 rad/s
200
In order to produce the most torque, what angle should your arm make with a wrench?
90 degree angle.
200
An astronomer named Bahe hired a mathematician named ________ ________ to interpret his observations.
Johanes Kepler
200
Which NFL team currently holds the record for most consecutive season without a winning record?
New Orleans Saints (1967-1986)
300
All objects in a circular path accelerate towards the center. This is called ________ ________.
centripetal acceleration
300
An object is rotating clockwise on a table at 33 rpm. What is the magnitude and direction of the angular velocity? Assume up is positive.
-3.46 rad/s
300
You grab a wrench 2 meters long and push at a 35 degree angle. How much torque will you produce?
1.15 Newtons
300
The semi-major axis of Saturn’s orbit is 1.427 x 10^9 km. What is the orbital period in years?
21809.78 years
300
Who assassinated JFK?
Lee Harry Oswald
400
If the angular speed is constant, the rotating object is experiencing __________ __________ __________.
Uniform Circular Motion
400
A car tire with a radius of 0.5 meters is rotating at a rate of 45 rpm. Find the tangential speed.
2.36 m/s.
400
A .9 kg rock is being swung in circles on a 10 meter line. It takes 4 seconds for the rock to complete one circle. What is the force you must exert while swinging the rock?
22.2 Newtons
400
Two 10,000 kg objects are 5 meters apart. What is the force of gravity?
2.96 x 10^-4 N
400
What country suffered two of the worst three earthquakes in recorded history, killing 830,000 in 1556 and 750,000 in 1976? (The 2nd worse was Haiti in 2010)
China
500
________ ________ is equal to the length of arc traveled along the circular path in one second.
Tangential speed
500
A boy in a corn field is trying to hit a can with a rock on the end of a sling. He is swinging the stone at a rate of 20 rpm. The sling is 1.2 m long form hand to stone. What is the magnitude of the centripetal acceleration?
5.3 m/s/s.
500
Two kids are on a playground and sit on each end of a 10 meter see saw. One kid weighs 300 N and the other weighs 200 N. Where must the pivot point be placed to balance the see saw?
6 meters from fat kid or 4 meters from skinny kid.
500
Keplers constant for a system is .0185185185. The orbital period is 2 years. Find the semi-major axis in ua's.
6
500
(Without accounting for inflation) What is the worldwide highest grossing film of all time?