Determine the number of hydrogen atoms in the sun. the mass of the sun is 2×1030kg. about 70% of it by mass is hydrogen, 30% is helium, and there is a negligible amount of other elements.

Which situation will have the highest resistance? a. long wire and high temperatureb. short wire and high temperaturec. long wire and cold temperaturedshort wire and low temperature

The energy released by a nuclear fusion reaction is produced when

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.