The barometer height at sea level is 76cm of mercury while that at a point on a highland is 74cm of mercury. What is the altitude of the point. (Take g=10,density of mercury 13600 and density in air 1.25

What object a collides with object b and bounces back its final momentum is?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.