PLEASE HELP: The worlds fastest passenger elevator operates at an average speed of about 10 m/s. If the 60th floor is 219 meters above the 1st floor, how much time does it take the elevator to go from the first floor to the 60th? show work

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter 1.8 mm. (a) determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of 550 w. the pellet has an absorptivity 0.3 and emissivity 0.8.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value