Plz help 1. How much force is needed to accelerate a 66kg skier at 2m/sec2

2. What is the force on a 1000kg elevator that is falling freely at 9.8 m/sec2

3. what is the acceleration of a 50kg object pushed with a force of 500 newtons?

The tendency of water molecules to stick together is referred to as a) adhesion b) polarity c) cohesion d) transpiration e) evaporation

How is the atomic number of a nucleus changed by alpha decay

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?