How can mechanical waves in the treatment of cancer? a. ultrasound is used to improve absorption of a radioactive pellet by a tumor. b. the radioisotope in a radiopharmaceutical releases sound waves into surrounding cells. c. beams of x-rays are targeted at a cancerous tumor from outside the body. d. cells absorb chemotherapy drugs more easily after being treated with ultrasound.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is