A student builds a circuit using three 1-ohm resistors in series. The current in the circuit is 1.5 amps.
a. How many D-cells are in the circuit? (Hint: use Ohm’s law.)
b. What is the voltage drop across each resistor?

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?