We discover a nearby star with two planets. the first planet has an orbit period of 10 years and is in a circular orbit with radius 106 km. the second planet has an orbit period of 15 years. what is its orbit radius? you may assume it is also in a circular orbit.

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers total displacement?