A 3000 kg freight train traveling at a rate of 2 m/s strikes a stationery 3000 kg freight car and couples up. What is the speed of the 2 cars as they move together after the collision?

If you were making a tool used to handle live electrical wires, which class of materials would you most likely use? ASemimetals BMetalloids CNonmetals D Metals

a puck moves 2.35 m/s in a - 22.0 direction. A hockey stick pushes it for 0.125s, changing its velocity to 6.42m/s in a 50.0 direction. what was the magnitude of the accerlation

An object has an x-momentum of 85 kilogrameters/second and a y-momentum of 9.8 kilogrameters/second. What is resultant momentum of the object? A B. C 15.5 kilo m eters/second 148 kilogrameters/second 12.97 kilogrameters/second D.

Definition: what is a group of protons and neutrons in the center of all atoms.

Mark all the hadrons. a) Proton b) Electron c) Anti-top d) Gluon e) Tau Neutrino

The power of a 1.5-volt alkaline cell varies with the number of hours of operation. A brand new D-cell can deliver as much as 13 A through a copper wire connected between terminals. Determine the power of a brand new D-cell.

You measure a watch's hour and minute hands to be 7.4 mm and 12.1 mm long, respectively. Part A In one day, by how much does the distance traveled by the tip of the minute hand exceed the distance traveled by the tip of the hour hand?

Describe the possible long term impact of a catastrophic event

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A transparent film laminated to a fabric is identified in the study material as a. stretch fabric. b. PVC. c. a skin. d. two-faced fabric