12,000 scientific notation

Which atom is involed in giving your heart energy to beat

A blue car with mass mc = 468 kg is moving east with a speed of vc = 21 m/s and collides with a purple truck with mass mt = 1264 kg that is moving south with a speed of vt = 12 m/s. the two collide and lock together after the collision.

A bullet traveling at 5.0 X 10^2 meters per second is brought to rest by a 50 newton * second impulse. what is the mass of the bullet?

When water falls through a dam and turns a turbine connected to a generator, electricity is produced. This electricity is often used to light our homes and offices.

A car suddenly slams on its brakes and skids west for 8 m before stopping. The force of friction acting on the car was directed up down east west None of the listed answers are correct

How is the moment magnitude scale used to describe earthquakes?

What force causes warm molten rock to move upward in the mantle? a. Convection c. Refraction b. Radiation d. Conduction

When are magnets attracted and when are they repelled.

Dura mater location?

El Nino begins with which of the following? -upwelling of cold ocean water -the westward movement of winds and currents in the pacific -heavy mudslides in california and tornadoes in florida -the eastward movement of winds and currents in the