How much power is expended if you lift a 50kg rock vertically for 15 meters in 15 seconds (g=9.8m/s^2)? 1.10 x 10^5 Watts
4.9 x 10^2 Watts
None
11.02 x 10^4 Watts

Most short-period comets do not have randomly oriented orbits because

Which is not true of the intertropical convergence zone? a) it features heavy precipitation b) it's where the trade winds collidec) it's a high-pressure zone with sinking air d) it is also known as the doldrums

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory