Which of the following technologies is based on the work of marie sklodowska-curie? o a. computer models to predict the effects of climate change o b. radiation treatments for breast cancer o o c. an orbiting observatory to detect x-rays from space objects d. undersea fiber-optic communications cables

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?