When an 8-V battery is connected to a resistor, 2 A of current flows in the resistor. What is the resistor's value? A. 2 ohms B. 4 ohms C. 8 ohms D. 16 ohms E. more than 16 ohms

You pull with a force of 255 N on a piece of luggage of mass 68 kg, but it does not move. If the coefficient of friction between the luggage and the floor is 0.7, what is the force of static friction acting on the luggage?

What is a risk assessment

When a bimetallic bar made of copper and iron strips is heated, it

A 80 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30∘ from the horizontal, and that of the second is oriented at 60∘ from the horizontal.

The small metal cylinder has a mass of 0.20 kgkg, the coefficient of static friction between the cylinder and the turntable is 0.080, and the cylinder is located 0.15 mm from the center of the turntable 0.080, and the cylinder is located 0.

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?

Match these terms with their definitions: 1. unit of electrical resistance ampere 2. unit of electromotive force or electrical potential ohm 3. unit for measuring the strength of an electric current volt 4. unit of electrical power watt

In which is momentum conserved: an elastic collision or an inelastic collision?

List the types of radiation in order from least to most damaging.

Which of the following statements best describes the current state of understanding regarding the apparent acceleration of the expansion of the universe?