If a car generates 18hp (which is 13428Watts) when traveling at a steady speed of 88km/h (which is 24.44m/s), what must be the average force exerted on the car due to friction and air resistance?

A record is dropped vertically onto a freely rotating (undriven) turntable. Frictional forces act to bring the record and turntable to a common angular speed. If the rotational inertia of the record is 0.

Find the displacement current through a parallel-plate capacitor. Assume that V is the voltage across the capacitor at any instant. Express your answer in terms of the variables C and dV/dt.

Suppose the Earth orbited the Sun in 4 months rather than 1 year, but had exactly the samerotation speed. How much longer would a solar day be than a sidereal day? Mercury's siderealday is 58.6 days and its orbital period is 88 days.

While an emf source supplies energy to a circuit, that energy is dissipated when the current passes through resistance. In dealing with circuits though, it is often more useful to know the rate at which energy is changing.

Ganymede, the largest moon in the solar system, orbits which planet? . Mars . Jupiter . Saturn . Uranus

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...