Which happened after the electromagnetic and weak nuclear forces were separated from the unified force? Check all
that apply.
inflation
big bang
release of first light
nucleosynthesis
formation of stars and galaxies
formation of elementary particles

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

Select the three ways that the parallel-plate capacitor differs from a car battery.