Kinematics
Forces
Energy & Society
Electricity & Magnetism
100
What is the difference between a scalar quantity, and a vector quantity?
Scalar: Just magnitude Vector: Magnitude and direction.
100
What is the key difference between mass and weight?
Mass never changes unless some of it is taken away, weight depends on the force of gravity acting on the object.
100
Which one of these is not a type of energy? a. Gravitational b. Kinetic c. Wind d. Elastic
c. Wind
100
Define AC and DC
AC: Alternating current - current moves back and forth DC: Direct current - current flows in one direction
200
Which of these is not uniform motion? a. A man walks down the street at a constant pace b. Making a left turn at a constant speed c. Driving up a ramp without accelerating d. A dog runs to fetch a ball in the same direction
b. Making a left turn at a constant speed
200
Which one of these is not one of Newton’s laws? a. If an object is moved in the direction of the force, work is done b. Objects in motion, tend to stay in motion c. If the external force is not 0, the object will accelerate d. Every action has an equal reaction
a. If an object is moved in the direction of force, work is done
200
What is the difference between negative work and positive work?
Negative work: speed decreasing, force and displacement are in opposite direction Positive work: speed increases, force and displacement are in same direction
200
Name at least 3 parts of Kirchoff’s Law
V series = V1 + V2 + ... I series = I1 = I2 = … V Parallel = V1 = V2 = … I parallel = I1 + I2 + ...
300
A jogger runs around the block. He runs 20 m [E], 5 m [S], 35 m [W], then 5 m [N]. What is his displacement?
15 m [W]
300
If the Fnet force of an object is 28.0 N and it is accelerating at 15.0 m/s2, what is the mass of the object?
1.87 kg
300
A solar panel produces 169, 000 J at 18% efficiency, what is the energy in?
940 000 J
300
What kind of circuit is this, and what is the voltage?:
Series V3 = 6 V
400
If a trucks average velocity is 2.0 m/s, and the acceleration is 3.0 m/s2, what is the time it has been traveling?
0.67 s
400
Finish this free body diagram (use g= 9.81):
a = 2.9 m/s2 [D] Fg = 628 N [D] Fnet = 578 N [D]
400
If 20,900 J are gained in 500 g of water, what is the temperature change? (specific heat capacity of water = 4.18 x 103 (J/(kg x °C))
ΔT = 10 °C
400
If you have a piece of iron that is not magnetized, and a small piece of magnetic material, how can you magnetize the iron? What happens?
Hitting the iron on the magnetized material will align the poles
500
A plane travels 1.0 km [E] for 1.0 hr, it then travels 3.0 km [S] for 1.0 hr. What is the average velocity? (Give answer in km/h)
1.6 km/h
500
What is the coefficient of friction if it requires 15.9 N of force to start moving a 3.3 kg cast iron frying pan across an oak countertop? (label with correct kind of friction, round to 2 decimal places)
0.49
500
A fluorescent light bulb uses 38 W. It is turned on for 3.5 hours per week, how much energy is transformed over the week? (Remember, W = J/s, 60 mins in an hour)
4.8 x 105 J or 480 kJ
500
Give an application of electromagnetic induction, and explain how it works.
•Generators • Transformers • Induction cooking • Metal detectors • Induction chargers
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