Einstein's equation e=mc2 scientists understand the sun's energy because the equation..

a. describes nuclear fission
b. explains how mass can be converted into huge amounts of energy
c. describes solar flares
d. explains a star's specific wavelengths of light

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

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.