True or false The expression that relates emf, potential, current, and resistance is Ohm's law.

The difference between a molecule and a compound is that a compound is made up of atoms from

A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 22 km2. what mass of water fell on the town? one cubic meter of water has a mass of 103 kg.

When salt dissolves in water, what type of change occurs? A. physical only B. chemical only C. physical and chemical

What causes nickel and certain other metals to be magnetic? A. the motion of protons in their atoms B. the pattern of electrons in their atoms C. their atoms have more electrons than protons D.

The particles ejected from the sun during a coronal mass ejection is called

If a force of 40 newtons moves a cart a distance of 9 meters, the work done is Nm. If the same force moves the same cart three times that distance, the work done is Nm. NextReset

What is the critical angle c for total internal reflection if the material is clear acrylic, with a refractive index of 1.5?

What is happening if energy input remains constant and voltage remains the same in a circuit, but the current decreases? A. The resistance has increased. B. The volts have decreased. C. The power has increased.

The velocity - time graph of a ball of mass 25g moving on road is as given below: (a) How much force does the road exert on the ball to bring it to rest? (b) What is the direction of the force exerted by the road?

A spring required a force of 5.0 n to compress it 0.1 m. How much work is required to stretch the spring 0.4 m?