Which of the observations below provide support for the big bang theory? a. energy, matter, and light are all quantized, and can only exist in small packets. b. matter and energy are equivalent. matter can be converted to energy, and energy can be converted to matter. c. lengths contract and time dilates as speeds approach the speed of light in a vacuum. d. the same background radiation was observed coming from all directions of space.

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?