Longitudinal waves - compressions and rarefactions that travel through a medium.
What is a sound wave?
100
When a force is exerted over a distance
What is work?
100
The rate of doing work.
What is power?
100
What are the tree ways in which a machine makes work easier?
By changing the size of the force needed, changing the direction of the force needed, and changing the distance over which the force acts.
100
Newton's First Law of Motion
An object at rest tends to stay at rest an an object in motion tends to stay in motion unless acted upon by an unbalanced for.
200
Unit that compares sound
What is a decibel?
200
Joules
What is the unit for work?
200
P=W÷T
What is the equation for power?
200
Wi=Fi•Di
What is the equation for work input?
200
Newton's Second Law of Motion
Acceleration of an object increases as the amount of force applied to it increases. The larger the mass of the object, the larger the force needed to cause acceleration.
300
Used in a variety of applications, including sonar and imaging
What is an ultrasound?
300
W=F•D
What is the equation for work?
300
Watts
What is the unit for power?
300
Wo=Fo•Do
What is th equation for work output?
300
Newton's Third Law of Motion
For every action, there is an equal and opposite reaction.
400
A technique for determining the distance to an object underwater.
What is a sonar?
400
D=W÷F
What is the equation for distance?
400
What are the six types of simple machines?
Lever, Inclined Plane, Wheel & Axle, Wedge, Pulley, and Screw
400
The reason that work input is always greater than work output.
What is friction?
400
The Law of Inertia
What is Newton's First Law of Motion also known as?
500
A change in sound frequency caused by motion of the sound source, motion of the listener, or both.
What is the Doppler Effect?
500
F=W÷D
What is the equation for force?
500
the ________ of a machine is always less than 100% due to friction (some energy is converted into heat)
What is efficiency?
500
E=Wo÷Wi•100%
What is the equation for efficiency?
500
f=m•a
What is the equation for Newton's Second Law of Motion?