A man is walking away from a lamppost with a light source h = 6 m above the ground. the man is m = 2 m tall. how long is the man's shadow when he is d = 8 m from the lamppost?

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?