Motion
Forces and Energy
Heat
Electricity
Waves
100
A person starts driving and travels 3 km east to a store. The person then turns around and travels 1 km west to another store. Finally, the person travels 2 km west, back to the starting point. What distance and the displacement of this person?
distance = 6 km
displacement = 0 km
100
A rope is attached to a block that has a weight of 120 N. When the rope exerts an upward force of 250 N on the block, what is the net force on the block?
130 N upward
100
Heat is transferred from warmer objects to colder objects, until the objects reach...
Thermal equilibrium (same temperature, no more heat transfer)
100
Name all the numbered components in the circuit diagram below
1. Battery
2. Switches
3. Resistor
4. Wire
100
What is the name of a wave in which the vibrations are perpendicular to the propagation (travel) of the wave?
Transverse wave
200
Describe the motion of the object from 0 to 2 seconds.
Traveling at a Constant Velocity of 4m/s
200
A 1500 kg car accelerates by 2 m/s for each second of travel. What is the net force acting on the car?
3000 N
200
A cup of water at a temperature of 10 degrees celcius sits out on the counter in a warm room. Describe what happens to the speed of the molecules and the average kinetic energy of the water molecules in the cup of water.
The water molecules increase in speed and thus increase in average kinetic energy as well.
200
A light bulb with a potential difference of 120 V across it carries a current of 1.5 A. What is the resistance of the light bulb?
80 ohms
200
Light is an example of a ________________ and __________________ wave
Transverse and Electromagnetic
300
Which Line represents an accelerating object?
C and D
300
The potential energy of a 77 kg diver standing on a 20 m high diving tower is 15,400 J. Two-thirds of the way down during the dive into the pool, his potential energy is 5,100 J. Neglecting air resistance, what is the diver's kinetic energy at this point? (Hint: total energy of the system must be conserved!)
10,300 J
300
When one end of a short metal bar is heated, the opposite end will eventually become hot. Which method of heat transfer is responsible?
Conduction
300
A 9V battery is hooked up to a 16 ohm resistor. Calculate the current flowing through the circuit.
0.56 A
300
A sound wave with a frequency of 1,700 Hz is traveling through air at a speed of 340 m/s. TWhat is the wavelength of this sound wave?
0.2 m
400
A baseball is thrown from the pitcher's mound at an average speed of 40m/s. It travels a distance 18 meters into the catcher's glove. How long did it take the ball to travel from the pitcher's hand to the catcher's glove?
0.45s
400
You must get all 3 parts correct:
1. Calculate the net force
2. State if the forces are balanced or unbalanced
3. If it's unbalanced, state which direction the acceleration would be in
1. Net F = 30N
2. Unbalanced
3. Accelerates to the left.
400
If given equal amounts of thermal energy, which material listed below will have the least amount of temperature change?
Water
400
Describe what will happen to the compass needle when an electric current flows through the wire, and describe why it happens.
The compass needle will move, because an electric current will induce a magnetic field that interacts with the tiny magnet in the compass needle.
400
Name at least 2 ways all electromagnetic waves are different from each other
wavelength, frequency, energy
500
Calculate the acceleration of the object based on this graph's data
a = 4m/s/s
500
Calculate the acceleration of the object pictured:
10m/s2
500
How much thermal energy is required for 25 grams of water to be heated from 20C to 100 C. The specific heat of water is 4.18 J/g C.
Q = 8,380 Joules
500
Which pair of charges below experiences the greatest attractive force? Explain why!
X and Y
They are opposite charges, so they have an attractive force.
Since they are closer together and have more charge than B and C, they have the strongest attractive force.
500
Name the 3 type of light rays shown in this picture below and where each one is in the diagram.
Incident ray- through the glass (bottom left side)
Reflected ray- Bouncing down and through the glass (bottom right side)
Refracted ray- passing into the air and bending away from the normal line (top right)