A roller coaster goes around one loop in 13.77 seconds. The loop has a radius of 16.234m. The coaster has a mass of 630kg. Find the velocity of the loop and then find the Fn of the roller coaster at the top of the loop.

Aflower pot weighing 3 newtons is sitting on a windowsill 30 meters from the ground is the energy of the flower pot potential or kinetic? how many joules is this

Which would not reduce the amount of green house gasses in the air

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.