Find the speed of a long distance runner who runs 30km in 6 hours

Why are electrons, rather than protons, the principal charge carriers in metal wires?

A soccer ball with a mass of 0.45 kg is kicked and is moving at 8.9 m/s. Find the kinetic energy of the ball.

A 5-turn square loop (10 cm along aside, resistance = 4.0) is placed in a magnetic field that makes an angle of30o with the plane of the loop. The magnitude of thisfield varies with time according to B = 0.50t2, where t is measured in s andB in T.

Two charged spheres are 16 cm apart. If the spheres are moved closer to each other so that they are 8 cm apart, how will the force between them change?

Height of a artificial satelite

Which of the following changes occurs naturally in a system over time?

What do radio waves and microwaves have in common? A. Both have shorter wavelengths than visible light. B. Both are located to the right of visible lights on the spectrum. C. Both have higher frequencies than visible light. D.

How long can you keep string cheese in the fridge?

A particular motor can provide a maximum torque of 110 n • m. assuming that all of this torque is used to accelerate a solid, uniform, cylindrical flywheel of mass 10.0 kg and radius 3.

Round your answers to one decimal place. This parallel circuit has two resistors at 15 and 40 ohms. What is the total resistance? Ω If there is a 12 V battery in the circuit, what would the approximate current be? A