Physics

Physics test 2

Force

Newton N

Power

Watt W

Energy

Joule J

Length

Meter M

Mass

Kilogram kg

Charge

Coulomb C

Potential Difference

Volt V

Resistance

Ohm

Current

Ampere A

Pressure

Pascal Pa

Frequency

Hertz Hz

Speed

Meter/second m/s

Time

second s

Earth’s magnetic field points

North

Who’s principle explains why ice floats

Archimedes’

Non electromagnetic waves

sound waves, water waves

Wave order from high to low

radio, infrared, orange light, blue light, ultraviolet, x rays, gamma rays

Frequency order from low to high

radio waves, infrared, orange light, blue light, ultraviolet, x-rays, gamma rays

Force depends on

charges and distance between charges

Voltage (V) =

current (I) x resistance (R)

Power (P) =

Voltage (V) x Current (I)

Sound waves are

longitudinal

Electromagnetic waves are

transverse

Longitudinal

oscillation is parallel to wave motion

transverse

oscillation perpendicular to wave motion

wavelength

length of one wave cycle

frequency

number of wave cycles per second

period

time of one wave cycle

1 m

100 cm

1 kg

1000 g

speed of light

3 × 10^8 m/s

speed of sound in air

343 m/s