An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula:) KE=1/2mv squared

7.5 kg

15 kg

60 kg

120 kg

Which transfer of energy occurs mainly through the process of convection?

A motorcycle travels 15 km west in an hour. The motorcycle then travels 35 km east in another hour. If east is taken as the positive direction, what is the velocity of the motorcycle? A. - 10 km/h B. 10 km/h C. 50 km/h D. - 50 km/h

the density of gold is 19.3 g/cm3. suppose a certain gold wedding ring deplaced 0.55mL of liquid when dropped in a glass of sparkling cider. how much did this wedding ring cost

The only person who may ask questions during an employee performance review is the supervisor.

A 2.1W iPod is used for 30 minutes. How much energy does it use?

A race car driver must average 200 km/hr for four laps to qualify for a race. because of engine trouble, the car averages only 170 km/hr over the first two laps. what average speed must be maintained for the last two laps?

A machine has a mechanical advantage of 5. if 300 newtons of input force is used to produce 3,000 newton meters of work what is the output force and what is the distance over which the work is applied

An experiment in your science class lists the materials needed for the lab. It is your job, as a lab partner, to measure out 25 mL of distilled water and 2.5 grams of magnesium.

If the water cycle is effective why are some areas in the world always short on water?

Low-frequency red light is used in dark rooms because it does not expose the film. This is because the red light has a low