Where does the energy of water at the top of the waterfall come from?

A pole-vaulter first converts kinetic energy into. a ... thermal energy ... b ... chemical energy ... c ... mechanical energy ... d ... elastic potential energy ...

A proton moving at 8.00 106 m/s through a magnetic field of magnitude 1.72 T experiences a magnetic force of magnitude 7.20 10-13 N. What is the angle between the proton's velocity and the field? (Enter both possible answers from smallest to largest.

While discussing electronic gasoline injection systems, Technician A states that most multiport EFI systems use two injectors for each engine cylinder. Technician B says such a system uses only one injector per engine cylinder. Who is right?

Two trains are traveling side-by-side along parallel, straight tracks at the same speed. In a time t, train A doubles its speed. In the same time train B increases its speed by a factor of 5.42.

A damped oscillator is released from rest with an initial displacement of 10.00 cm. At the end of the first complete oscillation the displacement reaches 7.36 cm. When 4 more oscillations are completed, what is the displacement reached (in cm)

The density of uranium is 18.8 g/cm3. part a what is this value in kilograms per cubic meter?

What name is given to the variable we plot on the x-axis? A. The dependent variable B. The independent variable c. The linear variable D. The inverse variable

What force is required to accelerate a body with the mass of 15 kilograms at a rate of 8m/s2?

Indicate whether the statement is true or false. A scientific fact is something that is absolute and unchanging.

Show the formula and caculate the speed of a car that traveled 100 km in 2 hours