When do you add forces

a 59kg physics student jumps off the back of her laser sailboat (42kg). after she jumps the laser is found to be travelling at 1.5m/s. what is the speed of the physics student?

How was the earth formed and how has it become what we know today?

How do the following factors affect the resistance of a wire? a. Temperature b. Length c. Diameter

Objects that are falling toward Earth in free fall move a. faster and faster. c. at a constant velocity. b. slower and slower. d. slower then faster.

Volume 350m density 1.11kg m^3 find mass?

What type of wave passes through the spring in the frog toy? Why?

Different kinds of substances have different properties of metals

Magma appears to be rising underneath the mid-oceanic ridges. a. True b. False

The energy required to crack a material

two punds of water vapor at 30 psia fill the 4ft3 left chmaber of a partitioned system. The right chmaber has twice the volume of the left and is initially evacuated.