julie blows a bubble at first the pressure of the gas in the bubble is 4kpa the bubble floats into the air and expands when it gets to the top of the tree the bubble has a pressure of 2kpa and a volume of 3.5m3 assuming a constant temperature what was the volume of the bubble when it was first blown

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

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.

What are atoms of the same element with varying number of neutrons