Find the power required to give a brick 60 j of potential energy in a time of 3.0 s.

Select all the factors listed that influence the density of ocean water. a. tides b. salinity c. fecundity d. temperature E. wave height F. current speed

A specimen of some metal having a rectangular cross section 9.54 mm x 13.9 mm is pulled in tension with a force of 20100 n, which produces only elastic deformation.

An astronaut on a space walk floats a little too far away from the space station. Without air to push against, he cannot paddle back. However, the astronaut is holding a hammer.

About how many known elements are there on Earth? Are they all naturally made? What are the main parts of an atom? Where are they located within the atom?

A satellite's velocity is 30000m/s. After 60 secs, it's velocity shows to 15000m/a. What is the satellite's acceleration?

Tony uses the device shown in the diagram to model how an electromagnet is used in his uncle's scrap metal yard.

A flight attendant pulls a 60.0 N flight bag a distance of 239.0 m along a level airport floor at a constant speed. A 21.0 N force is exerted on the bag at an angle of 66.0 degrees above the horizontal. How much work is done on the flight bag?

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. How far does the rock travel horizontally before striking the water?

This is a machine consisting of two wheels of different sizes that rotate together. It is a modified lever.

A source from which organisms generally take elements is called a/an A. biotic community. B. reservoir. C. exchange pool. D. food web.