A 1,000 kg car has 50,000 joules of kinetic energy. What is it's speed

For the lever shown, a = 5 m and b = 2 m. What is the mechanical advantage of the lever?

When a switch is closed, an uncharged 151 nF capacitor is connected in a series circuit with a 10.0 x 106 ohm resistor and a 9.00 V battery. What is the charge on the capacitor 1.3 s after the switch is closed

Mount mckinley in Alaska is America's highest mountain at 20,320 feet. Find it's height in kilometers. 1mi = 1.609 km = 5280. Answer in units of km

An atom has 14 protons and 15 neutrons, what is its mass number

A scalloped hammerhead shark swims at a steady speed of 1.5 m/s with its 88 cm - cm-wide head perpendicular to the earth's 56 μT magnetic field.

When is the zebra in motion when it is not moving

1) What happens when two negatively charged tape strips are placed near each other?

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

What causes an air conditioned to turn on

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?