States that scores on IQ tests have steadily risen since 1920

An electric motor uses

Two long parallel wires carry currents of 3.35 A and 6.99 A. The magnitude of the force per unit length acting on each wire is 6.03 * 10 - 5 N / m. Find the separation distance d of the wires expressed in millimeters.

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

Refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.) kinetic energy of the crate b.) potential energy of the crate c.

500 J of heat is added to the gas in an isothermal process. As the gas expands, pushing against the piston, how much work does it do?

When the air in a submarine's huge air tanks is decompressed and it displaces the water in the ballast tanks with air, what does the submarine do? A. It sinks B. It floats C. It provides air to the passengers

The decomposition of a substance by an electric current is called

Along some shorelines, incoming waves cause the water to simply rise and fall rather that form a surf zone. What does this tell you about these shorlines?

Which word best describes the rate at which work is done? work energy power velocity

Explain why a valve would last longer in the pulmonary position than in the aortic position