definitions
What is reflecting and refraction
Reflection - waves will bounce off the border of medium and leave at a similar angle
Refraction - Explains how we can see things obscured even though we know what thinks look like
Impulse formula(list all of them)
I=Ft=△p=p-Po=mv-MVo
What is a longitudinal wave and what does it consist of?
It consists of compression and rarefaction, they travel occurs when particles cycle horizontally with the energy. They travel through a medium
The net force of this rolling object is 37 N with a weight of 23 kg. What is the acceleration
1.68 m/s^2
An object had originally 8 m/s with a final one of 12 m/s. It took 20 seconds to travel. What is the acceleration?
0.2 m/s^2
Work energy Theorem?
In a closed system, energy is conserved, to changed the total energy, work needs to be done.
Mass-spring Period and Frequency equations
period(T) = 2𝝅√m/k or t^2=4𝝅^2m/k
Frequency(F)=√k/m/2𝝅 or f^2=k/4𝝅^2m
what is a transverse wave and what does it consist of?
Transverse waves occur when particles cycle vertically while energy moves horizontally. They have a crest, trough, wavelength, and amplitude.
40,000 N
An object traveled 16 meters with an acceleration of 3 m/s in about 8 seconds. What is the original velocity?
-10 m/s
Newton's first law- Objects in motion stay in motion. Objects at rest, stay at rest. In other words, it refers to inertia, objects tendency to resist a change in motion.
Newton's Second law - The more force applied on a object with mass the object will accelerate
equation - EF=ma
Newton's Third law- For every action, there is an equal and opposite reaction.
Both standing waves equations (fundamental frequency and the length of string)
Fn=nFf
λ=2L/n
How does a Wave travel?
Waves travel energy that is being absorbed by the atoms in the medium and the surrounding environment.
AN object was rolling down the hill with a friction force of 39 and the Coefficient of friction is 34. What is the normal force
1.14 N
An object has an original velocity of 10 m/s accelerating at 9 m/s^2. it traveled about 50 meters what is the final velocity?
31.6 m/s
friction, spring force, and tension force
Friction force- a reaction force that prevents or resists motion
Spring force- a reaction force that prevents or resists motion in stretched/squeezed(fs=kx)
Tension force- a reaction force that describes the tightness/stress on a rope, chain, ect
Rotational velocity Formula both period and frequency
V=2πr/T
V=2πrf
What is a standing wave?
It is a combination of both reflection and interference. There are times when both destructive and constructive interference occurs as well.
Spring has a constant of 40 n/m and it is 12 meters away from the ground. What is the spring force?
480 N
An object has a displacement of 8 and velocity of 2 m/s. How long did it take to reach this speed.
4 s