Electromagnets in radios can be used to A) play a CD. B) create sound. C) change the station. D) make a remote control.

What is the velocity of the ball 0.8 seconds after it's released?

A honey bee flies in circles around a flower. If the velocity of the bee is 670 cm/s and the radius of the circular path is 2.0 cm, what is the centripetal acceleration of the honey bee?

A tank containing liquid butane and one containing liquid propane are sitting adjacent to one another. each tank is equipped with a regulator with a pressure gauge. classify these statements as true or false.

If Jeff is sitting in a gaming rocker chair reading instructions is any work being done

What is the wave length of a wave? a the amount of cycles in a given time b the distance between the beginning and end of a cycle? c the amount of time that one full cycle takes d the distance traveled by one full cycle

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.

An LC circuit has a 6.00 mH inductor. The current has its maximum value of 0.570 A at t = 0s. A short time later the capacitor reaches its maximum potential difference of 66.0 V. What is the value of the capacitance?

The first law of thermodynamics states that ΔE = Q - W. Is this also a statement of the principle of conservation of energy? Yes, the heat added and the change in internal energy of the gas equal the work done by the piston.

How can we calculate the density of a sustance that has irregular volume