What is the best description of the destructive interference of light?

a. a longitudinal wave meets transverse light wave
b. two waves have the same direction of displacement
c. a mechanical wave meets an electromagnetic wave
d. two waves have displacement in opposite directions

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?