A science student drops a rock a mine shaft. If it takes 3.0 seconds for the rock to hit the bottom of the shaft, what is the speed of the rock just before impact? (Acceleration of the falling object is 9.8 m/s^2

Water boils at a temperature below 100 degrees celcius at higher altitudes. true or false?

Why Universe is Created?

Which statement best describes why a machine is useful? A-A machine does a greater amount of work than the amount of work that is done on it. B-A machine does a smaller amount of work than the amount of work that is done on it.

Which statement is true? Hydroelectric power is generated from moving water. Oil, a renewable resource, is processed to make jet fuel. Propane, a renewable resource, is used in some heating systems.

Co nazywamy mitem? Dlaczego starożytni tworzyli mity?

If a bottle was heated what would be observed? Explain

A box with a mass of 100.0 kg slides down a ramp with a 50 degree angle. What is the weight of the box? N What is the value of the normal force? Round the answer to the nearest whole number.

How does thermal energy heat a house? What devices and systems are involved?

A skater with an initial speed of 7.68 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air resistance is negligible. (a) The coefficient of kinetic friction between the ice and the skate blades is 0.105.

A. A PH202 student lives next to a construction site and sees a crane with a wrecking ball demolish the building next door. The wrecking ball swings along the wall between her house and the neighbor's house.