Uncertainty
Mechanics
Thermal Physics
Waves and SHM
Electricity
100
A student measures the radius r of a sphere with an absolute uncertainty ∆r. What is the fractional uncertainty in the volume of the sphere?
3 (dr)/r
100
An object is projected vertically upwards at time t = 0. Air resistance is negligible. The object passes the same point above its starting position at times 2s and 8s. If g = 10 m/s/s, what is the initial speed of the object?
3g
100
What is the ratio of "heat capacity" to "latent heat"
1/K
100
A first-harmonic standing wave is formed on a vertical string of length 3.0 m using a vibration generator. The boundary conditions for this string are that it is fixed at one boundary and free at the other boundary. What is the speed of the wave?
3.6 km/s
100
What is Ohms Law?
V=IR
200
There is such a thing as "human error"
no
200
Child X throws a ball to child Y. The system consists of the ball, the children and the Earth. What is true for the system when the ball has been caught by Y?
The total momentum of the system has not changed
200
What is Mrs Johnson's Favorite color?
Green
200
A system that is subject to a restoring force oscillates about an equilibrium position. For the motion to be simple harmonic, the restoring force must be proportional to
the displacement from the equilibrium position.
200
What is an internal resistance?
The resistance found inside of a cell or battery
300
Give an example of Random error
Example that could include timing an object falling
300
A parachutist of total mass 70 kg is falling vertically through the air at a constant speed of 8 m/s. What is the total upward force acting on the parachutist?
700 N
300
A sealed cylinder of length l and cross-sectional area A contains N molecules of an ideal gas at kelvin temperature T. How much is the pressure?
nRT/lA
300
A magnetized needle is oscillating on a string about a vertical axis in a horizontal magnetic field B. The time for 10 oscillations is recorded for different values of B. The graph shows the variation with B of the time for 10 oscillations together with the uncertainties in the time measurements.
How would you state the relationship between the time for 10 oscillations and the magnetic field (B)
Inverse Relationship
300
What is the name of the school you attend?
Cooper
400
How is uncertainty of time calculated?
range / 2
400
Is Mrs. J a cat or dog type of person?
dog
400
What do we have in common with a playtapus?
We both breath oxygen; We both go through the cell cycle; We both have to have food, water and living space
400
What year was Isaac Newton Born?
1642
400
Who studied electric circuits and discovered how current and voltage flow within a circuit?
Kirchhoff
500
What is Mrs. Johnson's son's name?
Jacob
500
What does conservation of energy mean?
All Energy has to be transferred within a system
500
How much pressure exists on the walls of a 5 cm radius balloon that has 5N of force. Assume balloon holds the shape of a sphere.
637 Pa
500
What is the shape of the graph that shows the variation with amplitude A of the intensity I for a wave?
x2 exponential