The waves will reinforce each other to produce a resultant waveform of increased amplitude
What is constructive interference ?
100
m1y = m2(d-y)
What is the formula for finding the centre of mass of two masses?
200
f x lambda
What is the formula for the velocity V of a wave?
200
Which electromagnetic wave has the shortest wavelength?
Gamma waves
200
What formula is the energy given by for an atomic mass increase of delta m ?
E = delta mc ^2
200
Draw the fundamental frequency for an open pipe
Show correct drawing
200
F = change in p / t
What is Newton's second law?
300
Are the waves in a pipe transverse of longitudinal?
Longitudinal (they are sounds waves)
300
What happens when 2 waves pass through a diffraction grating?
Interference
300
L= Iw
What is the formula for angular momentum?
300
The total momentum is always conserved during collisions
Why is the centre of mass unaffected by any interactions between masses?
400
What is the formula for the Doppler effect?
f1 = f vw / (vw - vs)
400
What is the formula v = √ (GM/r) and what do the letters represent?
Calculates the speed of a satellite when in orbit at a certain height.
V = velocity, M = mass, r = height, G= gravitational constant (6.67 x 10 ^ -11
500
1. Only certain electron orbits are stable
2. Electrons move from one orbit to another by emitting or receiving energy
3. Angular momentum is quantised
What are the three main assumptions of Bohr's hydrogen atom model?
500
Complete "During a collision in rotational motion the total angular momentum is conserved when there is .....