What do superstring theories try to elucidate

Reference no: EM137811

Q1. What do superstring theories try to elucidate?

a. forces holding super clusters of galaxies together

b. behaviour of matter during the inflationary epoch

c. apparent acceleration of the expansion of the universe

d. behaviour of matter during the Planck time when all four fundamental forces were unified.

Q2. A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine?

Reference no: EM137811

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