Linear Motion
Newton's Laws
Energy, Work, and Power
Wave Properties
Electricity
100
Objects that appear to not be moving in respect to one another
What is frame of reference?
100
Causes a resting object to move, or accelerate by changing the object's speed or direction.
What is force?
100
force times distance
What is work?
100
From compression to compression or rarefaction to rarefaction.
What is wavelength of a longitudinal wave?
100
A thick wire has __________ resistance than a thin wire.
What is less?
200
The length of a path between 2 points.
What is distance?
200
As you push a cereal box across a tabletop, the sliding friction acting on the box...
What is acts in the direction opposite of motion?
200
Equation for MECHANICAL power.
What is work divided by time?
200
wavelength * frequency
What is velocity of a wave?
200
When the current caused by a 5 V power source is 4 amps, what is the resistance of the wire?
What is 1.25 ohms?
300
The direction and the length of a straight line from starting point to ending point.
What is displacement?
300
An automobile with a mass of 500 kilograms accelerates when the traffic light turns green. If the net force on the care is 5000 newtons, what is the car's acceleration?
a = F/m (based on F = ma) m = 500 kilograms, F = 5000 newtons 5000 N / 500 kg = 10 m/s^2
300
Makes work easier by changing the size of the force, the direction of force, or the distance.
What is a machine?
300
speed of light
What is 3 * 10^8 m/s?
300
direction of current in a circuit
What is from positive terminal to negative terminal?
400
You travel 45 kilometers in 0.4 hour and then travel 53 kilometers in 0.6 hour. What is your average speed?
Speed = distance / time Average speed = total distance / total time = (45 km + 53 km) / (0.4 hr + 0.6 hr) = (98 km) / (1 hr) = 98 km/hr
400
When one object exerts a force on a second object, the second object:
What is exerts an equal and opposite force?
400
A 60 kg diver at the top of a 15 m high platform has this much potential energy.
PE = m*g*h = 60 kg * 9.8 m/s * 15 m = 8820 J
400
EM wave with the longest wavelength and lowest frequency.
What is a radiowave?
400
An electric over is connected to a 340 volt line and uses 24 amps of current. What is the power used by the oven?
P = I*V = 340 V * 24 A What is 8160 watts?
500
A ball rolls down a ramp, starting from rest. After 2 seconds, its velocity is 6 m/s. What is the acceleration of the ball?
Acceleration = change in velocity / time = (6 m/s - 0 m/s) / 2 s = 3 m/s^2
500
An eagle and a bumblebee are traveling at 8 km/hr. The eagle has __________ momentum.
momentum = mass * velocity What is more?
500
You lift a box 3 meters in 4 seconds with a force of 50 Newtons. The power used is...
What is 37.5 W?
500
A wave has a speed of 400 m/s and passes a single point 14 times a second. The wavelength is...
v = f * lamda 400 m/s = 14 Hz * lamda What is 28.6 m?
500
A clothes dryer uses 6000 watts of power. I use the dryer 45 hours a month. At $0.12 a kwh, how much do I owe the electric company?
cost = kwh * price = 6 kw * 45hr * $0.12 = $32.40
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