A weightlifter does 740 J of work on a weight that he lifts in 3.8 seconds. What is the power with which he lifts the weight? Round your answer to one decimal place. Your ​

Which statements best describe medical uses for radioactive isotopes? check all that apply. radioactive isotopes are used to detect medical problems. high-energy gamma rays are injected into the body. radioactive isotopes are used to treat some diseases. radiation is used to kill cancer cells. radioactive isotopes are directed at tumors from outside the body.