Kinematics
The difference between displacement and distance.
What is direction? (Displacement is a vector, distance is a scalar)
For every action there is an equal and opposite reaction (what is this law called?). Also give an example.
Newton's 3rd law.
Q1. The units of energy/work.
Q2. The units of power.
Q1. What is a Joule?
Q2. What is a Watt? Haha.
True or False. Waves with higher frequencies have longer wavelengths.
False!
A law that relates voltage, current, and resistance.
What is Ohm's law, V=IR?
The area under a velocity/time graph.
What is distance?
The difference between mass and weight.
What is gravity? Mass doesn't take gravity into account, weight is a force.
If you are holding up a heavy box, but the box isn't moving, what is the work being done?
No work is being done if there is no displacement. W=Force*distance
Describe deconstructive interference.
When 2 waves collide and combine, the net wave's amplitude is decreased.
Elements in series have the same ___ but different ____.
The same current, different voltage.
What is zero? No acceleration if constant velocity.
If the same force is applied to a penny (mass= 0.001kg) and a baseball (mass=0.01kg), which object will have more inertia?
What is the baseball? F=ma
Give an example of potential energy.
Lots of answers! A stretched rubber band, a ball in the air etc..
The units of frequency.
What is Hertz. Or what is 1/seconds.
If the current through a lightbulb is 1 Amp, and the voltage drop across is 5 Volts, what is the power?
5 Watts. (P=V*I)
A rock is dropped from a roof. (On Earth, so acceleration due to gravity is 9.81m/s^2). After 2 seconds, what is the velocity?
What is 19.62 m/s
Draw a FBD (Free Body Diagram) for a box being pulled on a table.
If 410,000 Joules are used to run a motor for 20 seconds, what is the power?
What is 20,500 Watts? (P=Work/time)
The loudness (or intensity) or a sound wave is related to it's ___.
What is amplitude. (Higher amplitude, louder sound)
How would you calculate the total resistance of 2 resistors that are in parallel?
What is, 1/R_total = 1/R + 1/R
A plane has takeoff speed of 88.3m/s. The plane needs 1365m of runway to reach this speed. Determine the plane's acceleration, AND the time it takes to speed up to 88.3 m/s.
What is 2.856 m/s^2. What is 30.8 seconds.
If you pull on a mass with 50 Newtons up, and 30 Newtons to the right, what is the net applied force and what angle is it at?
What is 58.3N [North-East], 59 degrees from the horizontal?
If a dog with mass of 30 kg is running at a constant velocity of 5 m/s, what is the dog's kinetic energy?
What is 375 J.
If violet light has a wavelength of 400 nanometers, what is it's frequency? (Hint: visible light travels at the speed of light, 3x10^8 m/s)
What is 7.5x10^14 Hz
If current is flowing to the right in a wire, what is the direction of the generated magnetic field?