(Level 1) A 78 kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. Calculate the skydiver's
(a) ...kinetic energy
(b) ...potential energy.
total mechanical

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

Which subatomic particle has a negative charge