Formulas not on Formula Sheet Flashcards
1
Q
What is the formula for the power of a laser?
A
nhf
2
Q
What is the formula for phase difference in radians for progressive waves?
A
2 x pi x d / wavelength
3
Q
Maximum number of orders for a diffraction grating
A
d/wavelength rounded to nearest whole number
4
Q
Potential dividers
A
V1/V2 = R1/R2
5
Q
Escape velocity
A
Root 2GM/R or root 2gR
6
Q
Gravitational potential energy of a satellite
A
GMm/2r
7
Q
Relative permittivity of a dielectric substance
A
Q/Q0 or C/C0
