A student standing on a roof throws a ball toward the sky. He then tries to make an energy transfer diagram for the ball. What should go in the blank in the diagram?

What is the difference between accuracy and precision and which is most important to scientific measurement?

How many electrons must be transferred to a body to produce a charge of 125 nc?

Explain why Dalton's theory was more successful than Democritus' theory.

A 490 n (her weight due to gravity) woman is standing on bathroom scale. what is the woman's mass in kilograms

A rigid tank contains 1 kg of air (ideal gas) at 15 °C and 210 kPa. A paddle wheel supplies work input to the air such that final temperature is 97 "C. The specific heats are Cp 1.005 kJ (kg. K) and C-0.718 kJ / (kg. K).

What does the ozone layer absorb? a. Microwaves c. UV radiation b. X-rays d. Infra-red radiation

An object is undergoing shm with period 0.900 s and amplitude 0.320 m. at t = 0 the object is at x = 0.320 m and is instantaneously at rest. calculate the time it takes the object to go (a) from x = 0.320 m to x = 0.160 m and (b) from x = 0.

Your friend states in a report that the average time required to circle a 1.0-mi track was 49.325 s. This was measured by timing 10 laps using a stopwatch with a precision of 0.01 s. Do you believe his results are reliable? Explain.

The forklift exerts a 300.0 N force on the box and moves it 15.0 m into the air. How much work does the forklift do? A. 500 J B. 1.50 * 10^3 J C. 4.50 * 10^3 J D. 0.00 J

Why the room gets hot even we open the door of refrigerator?