Assume that when 1 kg of hydrogen undergoes fusion to helium, 6.4 × 10^14 j of energy is released. (a) calculate the amount of mass, in kilograms, converted to energy by the fusion of 0.75 kg of hydrogen. (b) what is the ratio of the converted mass to the original mass?

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.