If u accomplished 10,000 newton meters of work how much work did you do in units of joules

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?