The Earth moving round the Sun in a circular orbit is acted upon by a

force, and hence work must be done on the Earth by this force. Do you

agree with this statement?

A 20 kilogram ball rolls down a 10 meter ramp at the rate of 15 meters per second. The kinetic energy is joules

Which of the following is not a danger associated with hurricanes?

The atomic mass of an element is equal to the number of: A: protons B: protons plus neutrons C: protons plus electrons D: neutrons

A uniform electric field is oriented in the - z direction. The magnitude of the electric field is 6500 N/C.

Of the four most important pathways by which stress affects health, the first one to occuris usually related to physiology

When attempting to solve a difficult problem, the best scientific approach would be to a. bring together a team of scientists with different backgrounds and perspectives to work together to find a solution to the problem. b.

When viewing a piece of art that is behind glass, one often is affected by the light that is reflected off the front of the glass (called glare), which can make it difficult to see the art clearly.

force used to lift a 25kg mass to a height of 24m in 5 sec does 2120J of work. Calculate the power.

Which statement is true about the atom? A: it contains positive electrons, uncharged protons and negative protons. B: it contains uncharged neutrons, positive electrons and negative protons.

Steel objects can become temporary magnets because they are mainly composed of which element?