A 45,000 kg train moves at a velocity of 12 m/s north. It collides with a 50,000 kg train moving 10 m/s south. If the collision is inelastic, what is the final motion of the trains?

Most atoms in the Sun exist as: A) solids B) liquids C) plasma

During the developing of a TLC plate, it is common to place a cover on the chromatography chamber and have a piece of moist filter paper line the walls of the TLC chamber.

A sound pulse emitted underwater reflects off a school of fish and is detected at the same place 0.01 s later. how far away are the fish?

3. How can you find the velocity of the object just before impact without directly measuring it?

Oxygen with tt1 = 1000°r, pt1 = 100 psia, and m1 = 0.2 enters a device with a cross-sectional area a1 = 1 ft2. there is no heat transfer, work transfer, or losses as the gas passes through the device and expands to 14.7 psia.

How long did it take to reload a rifle during the 18th 19 century?

Oil flows upward in the wick of a lantern because of the liquid property called A. meniscusity. B. capillarity. C. density. D. viscosity.

A high-mass star has more "fuel" than a low-mass star. which lives longer? why?

Suppose that, while lying on a beach near the equator of a far-off planet watching the sun set over a calm ocean, you start a stopwatch just as the top of the sun disappears. you then stand, elevating your eyes by a height h = 1.

Suppose you want to know if the color of peoples hair affects how warm it can keep their heads. describe the skills you would use to conduct an experiment to test your inquiry