An astronaut on another planet drops a 1-kg rock from rest and finds that it falls a vertical distance of 2.5 meters in one second. on this planet, the rock has a weight of: (hint: use d = 1/2 g t^2 to find g; then use w = mg to find weight.)

How long will your trip take (in hours) if you travel 350 km at an average speed of 80 km/hr? khan academy?

When is a robot considered a cyborg.? A) when it replaces a human in a job B) when part of it is human C) when it is used in medical procedures D) when part of it malfunctions

What causes density currents to form in the mediterranean sea? a. condensation b. evaporation c. transpiration d. upwelling

A hollow sphere of negligible mass and radius R is completely filled with a liquid so that its density is rho. You now enlarge the sphere so its radius is 2R and completely fill it with the same liquid. What is the density of the enlarged sphere?

energy conservation-problems 1. A slingshot fires a pebble from the top of a building at a speed of 14.0m/is. The building is 31.0m tall. Ignoring all frictional effects, find the speed with which the pebble strikes the ground

Do different volumes of water have the same density? Why or why not?

Suppose you increase your walking speed from 4 m/s to 12 m/s in a period of 1 s. What is your acceleration?

If a wave is traveling at a constant speed, and the frequency decreases, what would happen to the wavelength? A) It would increase B) It would decrease C) It would remain constant D) It would drop to zero

What conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space?

A car travels 35.0 mph north for 1.00 hour, then 40.0 mph east for 0.0500 hour, and finally 50.0 mph northeast for 2.00 hours. Calculate the average speed.