Mechanics
A car travels between the 100m and 250m markers in 10s. What was its speed?
15 m/s
A 1000kg car is moving at 4 m/s. What is its KE?
8000J
Coulombs are the units for what measurement?
Charge
What kind of waves are sound waves?
Longitudinal or Compressional
Compared to red light, what kind of energy does blue light have?
Increased
An object starts from rest, then accelerates at 5m/s2 until it hits 30m/s. How far did it travel in this time?
90m
A 10N cart is pushed 10 m horizontally by a 5N force.
How did its PE change?
It didn't
What is the charge on a proton?
1.6 x 10-19 J
A wave travelling across a pond at 30m/s has a wavelength of 5 meters. What is its frequency?
6 Hertz
If a hydrogen atom absorbs 1.89eV as it was excited and jumped between levels, which levels would it have jumped between?
n2 to n3
A ball thrown straight up reaches a height of 20m, what was its velocity at the top of its flight?
0m/s
A spring with a constant of 120N/m is stretched 0.2m from its original position. What is the potential energy now stored in the spring?
2.4J
8J of work transfers 4C of charge between 2 points with what potential difference?
v=W/q 2V
A single pulse in a medium will transfer what in the medium?
energy
A baryon only has down and strange quarks. What is the charge on a baryon?
-1e
Momentum is the product of which two things?
m v
What are the units for POWER?
Watts
What does the ratio of potential difference to current equal?
RESISTANCE
A ray of light goes from air to crown glass. what happens to its speed, and which way will it bend?
it will slow down and bend toward the normal
What is the charge on an anti-down quark?
+1/3 e
A force of 10N causes an object to accelerate at 2m/s2. What is the mass of the object?
5kg
How much power is developed when 20 joules of work are done lifting a truck in 4 seconds?
5 Watts
How much resistance is in a circuit with 2 Amps of current flowing, with 6V of potential difference?
3 Ohms
What is the refracted angle of a ray of light incident upon lucite from air at an angle of 60o?
35o
What does the STRONG nuclear force do?
holds protons and neutrons together.