Which of the following is the densest layer of the solid Earth?

atmosphere

crust

mantle

core

A person drives an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a velocity of 30 meters per second. The difference in the automobile's kinetic energy between the two velocities is joules.

An electric dipole with its center located at the origin of a Cartesian coordinate system oscillates along the x axis, creating an electromagnetic wave.

When density increases, what happens to the number of molecules in a volume of air?

A technician connects one lead of a digital voltmeter to the positive () terminal of the battery and the other meter lead to the battery terminal (B) of the starter solenoid and then cranks the engine.

The United States possesses the ten largest warships in the world, aircraft carriers of the Nimitz class.

Is mercury (the planet) rocky or gaseous (meaning relating to or having the characteristics of a gas.)

What does one prolonged blast emitted by boat a using an efficient sound producing device indicate?

Feng and Isaac are riding on a merry-ground. Feng rides on a horse at the outer rim of the circular platform, twice as far from the center of the circular platform as Isaac, who rides on an inner horse.

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. She placed a ray box in front of a mirror.

When the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isJ.