A tugboat with mass 10,500 kg makes – and maintains – contact with and begins to push a stationary ship with mass 200,000 kg. If the tugboat’s original velocity is 20.6 m/s, what is the velocity of the two combined vessels?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.