kinematics
what does uniform motion mean
constant velocity
every object has a _________ _____________ reaction
equal, opposite
what are the 3 types of circuits
- series
- parallel
- combonation
what type of wave is sound
Sound is a mechanical longitudinal wave because it requires a medium to travel through
what is the unit for energy
what are the 2 major types of graphs we used in this unit
positon vs time and velocity vs time
How many laws did newton have
(he is my number 1 opp)
3
how are the resistance in a parallel and series circuit different (not just the equations but kind of like what they mean)
the more loads in a series circuit, the greater the resistance
the more loads in a parallel circuit, the lesser the resistance
what causes sounds to travel twice
an echo
what are the 3 types of decay
alpha, beta, and gamma
what does the slope on a
1. position time
and a
2. velocity time graph represent
1. velocity
2. acceleration
how do you calculate the Force of friction
give me 3 reasons why electromagnets are better than regular magnets
- they can be turned on and off
- you can switch their polarity
- you can control their strength
when i go Mach 1, what does that really mean?
when i go Mach 2, what does that really mean?
mach 1 = the speed of sound
mach 2 = 2 x the speed of sound
Can 2 objects have the same temperature but have a different amount of thermal energy?
yes, because the object might have different masses and made out of different materials
how can we calculate the displacement on a velocity - time graph
the area from the points to the x axis
there are 5 forces that can act on an object, name them all
F n
F a
F f
F t
tell me what the following symbols are and their units
q, v, I, C
charge (in coulombs)
voltage (in volts)
Current (in amps)
capacitance (in farads)
when we go up an octave number, how much wavelengths get added
1/2 of a wavelength
what is the difference between fusion and fission
fusion brings light elements together, while fission breaks a heavy atom apart (by bombarding them with neutrons)
what is the difference between speed, velocity, distance, and displacement
Distance is the length of the path you took
Displacement is a change in position, relative to where you started.
speed is about the distance you are traveling while displacement is about the displacement
what was newtons third law and what was it in response to
newtons third law said that every action has an equal opposite reaction, so when a ball is thrown up in the air, eventually it will come down. this is in response to the failed theory that there was 4 elements and everything wanted to go to the biggest of the element which is why it wanted to come down to earth. obviously this was wrong and dumb.
explain faradays law
Any change in a magnetic field near a conductor induces an electric field in the conductor (without physical contact)
name 3 ways to change the fundamental frequency of a string (there are 4 but u can name 3)
-how to change the fundamental frequency of a string
Change the tension in the string (proportional)
Change the length (proportional)
Change the diameter/thickness (inverse, more thick = less frequency)
Change the density (material) (inverse i think?)
what is the difference between beta positive and beta negative decay
beta postitive is when a proton becoms a neutron, emiting a neutrino and a positron in the process, and going down an atomic number
Beta negative is going up an atomic number, a neutron becomes a pritin, and an electron and anti neutrino emits