roller coaster has a mass of 425 kg. It sits at the top of a hill with height of 66 m. How fast is it going when it reaches the bottom?

Jim (mass=100kg) rollerblades on a smooth horizontal floor at a constant speed of 2.0 m/s for a distance of 5m in 5 seconds. What is the power in this process? (assume g is 10 m/s^2)

A hockey puck moving at 0.4600 m/s collides with another puck that was at rest. The pucks have equal mass. The first puck is deflected 38.00° to the right and moves off at 0.3400 m/s.

A lightbulb has a voltage of 120 V and uses a current of. 75 amps. What is the electric power used by the lightbulb? Show work

A student obtained a clean dry glass-stoppered flask. she weighed the flask and stopper on an analytical balance and found the total mass to be 31.601 g. she then filled the flask with water and obtained a mass for the full stoppered flask of 60.

Glassy and metallic are terms that describe what mineral property? A. luster B. color C. shape D. hardness

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup

Rapid gas exchange can be accomplished more easily in air than in water because A. the O2 content of water is higher than that of air B. O2 diffuses more rapidly in water than air C. water is more dense and viscous D.

Which electron transition between the energy levels of hydrogen causes the emission of a photon of visible light?

According to a college survey, 22% of all students work full time. find the mean for the number of 3) students who work full time in samples of size 16.

How Much Potential Energy Does A 50kg block of Ice a Height of 4m Have?