Question | Answer |
Formula for work | W=FxD |
Formula for power | P=W÷T |
Wave speed formula | Wave speed = Wave length ÷ Wave period |
Tommy lifted a box, he applied 30N and carried it for 2M, how much work was applied? | 30Nx2M=60J |
Force | A push or pull exerted on an object (newtons) |
Work | The use of force to move an object some distance (Joules) |
Wave | Vibrations of particles |
Medium | The material (solid, liquid, or gas) that waves travel through |
Crest | The highest point on a wave |
Trough | The lowest point on a wave |
Longitudinal wave | Particles move parallel to the direction that the wave moves |
Compression | When part of a wave becomes more compact |
Rarefaction | When part of a wave spreads out |
Transverse wave | Particles move perpendicular to the direction of the wave |
Mechanical wave | Waves that require a medium |
Electromagnetic waves | Waves are not disturbances in a physical medium |
Amplitude | Measure of how far particles in the medium move from the rest position |
Wavelength | The distance from any point on a wave until the next identical point |
Frequency | The number of waves that pass a point in a given amount of time |
Hertz (Hz) | The measure of frequency |
Wave speed | How well a wave length moves through a medium |
Wave length formula | Wave length = wave speed ÷ frequency |
Lucy lifted an apple with 20J and held it for 2sec, how much power was used? | 20J÷2sec=10watt |
Bert wanted to know his work ability after using 80N and walking 4M | 80Nx4M=320J |
If Sophie moved 10M and had a work of 80J, what was her force? | 80J÷10M=8N |
Bill had a work of 60J and 30N what was his distance? | 60J÷30N=2M |
Clary has a force of 80N and traveled 5M, what is her work? | 80Nx5M=400J |
If a wave is 8in and the wave period is 4 waves per second what is the wave speed? | 8IN÷4WPS=2 wave speed |
A body builder has a force of 150N and has a work of 300J what was his distance? | 300J÷150N=2M |
Jace walked for 1H and had a work of 35J what was his power? | 35J÷1H=35watt |