Two objects, one with a mass of 75.0kg and the other with a force of 30.0kg experience a gravitational force of attraction of 9.50x10^-8N. How far apart are their centers of mass?

(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?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Photons with the highest energy have the longest period