If a heat engine pulls 4390.0 j of heat from the hot reservoir and exhausts 3582.2 j of heat to the cold reservoir, what was the work done by the engine? what is the efficiency of this engine in percent? (do not enter the percent sign)

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom

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