Heat engines convert which type of energy into mechanical work

Which statement about dwarf planets is true? a. pluto was the first dwarf planet to be discovered. b. all dwarf planets likely contain a mixture of rock and ice. c. dwarf planets lie beyond the outer planets

Which of the following is proportional to the net external force acting on a body? A. Speed B. Velocity C. Rate of change of speed D. Rate of change of velocity

If your at the mall with your friends and they shoplift what would you do

How are loudness and intensity related to the amplitude and energy of a sound wave? What is the unit of intensity?

During a race, four competitors of the same weight rode identical bicycles for 10 minutes. At 8 minutes, which bicycle was moving with the greatest velocity?

Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen? A) NH2 B) NH3 C) NH4 D) N2H

Choose the correct statement about the currents through the elements. Choose the correct statement about the currents through the elements. The currents in series-connected elements are not the same and depend on a current or a voltage source.

5 potential causes of infertility

Suppose you place a ball in the middle of a wagon, and then accelerate the wagon forward. Describe the motion of the ball relative to the ground. - Describe its motion relative to the wagon.

Water is poured into a container that has a leak. The mass 'm' of the water is given as a function of time 't' by, m=5t^0.8 - 3t + 20, with t>=0, mass in grams and t in seconds a. at what time is the water mass greatest, and b.