A robotic rover on Mars finds a spherical rock with a diameter of 10 centimeters [cm]. The rover picks up the rock and lifts it 15 centimeters [cm] straight up. The resulting potential energy of the rock relative to the surface is 2 joules [J]. Gravitational acceleration on Mars is 3.7 meters per second squared [m/s2]. What is the specific gravity of the rock?

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds

This is what a calorimeter is used for simpler ex, to measure calories in food.