Rain is falling vertically with a speed of 20 m/s. A person is running in the rain with a speed of 10m/s from north to south. In which direction should be hold his umbrella?Explain.​

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

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.