If a cyclist in the Tour de France traveled southwest, a distance of 12,250 meters in one hour. What would the velocity of the cyclist be? Please help!!!

Cobalt-60 is an artificial radioisotope that is produced in a nuclear reactor and is used as a gamma-ray source in the treatment of certain types of cancer. if the wavelength of the gamma radiation from a cobalt-60 source is 1.00 × 10-3 nm, calculate the energy of a photon of this radiation.

During which time interval does the object travel approximately 10 meters

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li