What colour would you see if white light on a magenta t-shirt?

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.