The diagram below shows a car on a roller coaster with four labeled locations.
w
X
Z
Between what two locations does the car's kinetic energy transform into potential energy

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?