If critical mass is reached, it can cause:
a: electrons to split
b: a chain reaction
c: a fusion of uranium nuclei
d: krypton atoms to split into strontium and xenon

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

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.