A bus leaves Davis at noon on its way to Merced. It travels at 60 km/hr for 30 minutes, then 100 km/hr for the next hour, and 30 km/hr for the final 20 minutes. After a 10 minute break in Merced, it travels back to Davis at a constant speed. It finally reaches Davis at 4:00 pm. How much was its return speed?

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.

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack