Have the greatest amount of energy, one burst is more than the sun’s worth for eternity. They can be friendly, but only if used sparingly

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

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.

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.