light & optics
what is the speed of light?
3.00 x 10^8 m/s
what is the unit for frequency?
Hertz
what is a current? the flow of...
positive charge (even though only negative charges are actually flowing)
what is the unit of heat?
Joule
the difference between lenses and mirrors?
lenses refract light, mirrors reflect light
what is the spectrum of visible light? (give the nm)
~400-700 nm
what is the speed of sound in air?
343 m/s in 20 degree air
what are the units of current?
ampere
what is a closed system - what can it exchange/not exchange with the surroundings?
exchanges energy, no mass
what changes in B decay, the mass number, the atomic number or both?
atomic number, mass does not change
Daily Double!! For 600:
equation for magnification? what does the + and - mean? what does a magnification of 1 mean?
di/do (- if inverted, + if upright)
what is the equation for sound level (measured in decibels?)
B = 10log(I/Io)
what is Ohm's law?
V = IR
name 3 state functions
temperature, volume, enthalpy, internal energy, Gibbs free energy, entropy, pressure,
what is half-life?
the time it takes for half of the sample to decay
what is the equation for snell's law? what does n stand for?
n1sin(angle 1) = n2sin(angle 2)
n = index of refraction
equation for angular frequency?
w = 2pi frequency
when resistors are in series
what are the 2 process functions?
work and heat
Daily double! for 800:
what is the archimedes principle?
a body wholly or partially immersed in a fluid will be buoyed upwards by a force equal to the weight of the fluid that it displaces
Define total internal reflection and give the relationship between angle 1 and the critical angle
All light is reflected back into the original material. angle 1 > critical angle
what is forced oscillation?
when a periodically varying force is applied to a system, the system will then be driven at a frequency equal to the frequency of the force
(like when you push a child on a swing)
what meter is used to measure the current at a point in the circuit?
ammeter
the equation for ∆S
∆S = q reversible / T
equation for lens power? what is the unit?
power = 1/focal length , measured in diopters