The hydrogen stored inside a large weather balloon has a mass of 135. 5 g. What is the volume of the balloon (l) if the density of hydrogen gas is 0. 089 g/l?.

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

Which three statements represent the benefits of performing experiments using computer simulations?