A submarine travels 25 km/h north for 3.2 hours. What is its displacement?

A.

7.8 km north

B.

28.2 km north

C.

80.0 km north

D.

253 km north

How much work is performed when you push a couch of mass 44 kg a distance of 2.5 m using a force of 135 N?

Describe the energy transformations that take place when a skier starts skiing down a hill but after a time is brought to rest by striking a snowdrift

The micturition reflex can be voluntarily controlled by the

The measure of the force of gravity acting on an object is called

How does friction work

A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a comet.

What is cosmic microwave background radiation?

Ocean water has a salinity of 35 parts per thousand. Fresh water has a salinity of less than 0.5 parts per thousand. What can you conclude from this information? A. Ocean water is rich in salt minerals. B.

You decide to add up all the work you did yesterday. If you accomplished 10,000 newton·meters of work yesterday, how much work did you do in units of joules?

What causes day and night on earth?