How do ultraviolet rays affect skin

1.9 kg block of iron at 24 °C is rapidly heated by a torch such that 14 kJ is transferred to it. What temperature would the block of iron reach (assuming the complete transfer of heat and no loss to the surroundings) ?

Average velocity can be calculated by dividing displacement over what? NVM its change in time

New research is using functional magnetic resonance imaging (MRI), a scan of the brain that shows specific areas that are activated during certain tasks, as a lie detector test.

In an experiment to create a pendulum, each member of the group measured the length of the string to be a slightly different value. How do we describe these small differences when reporting the length?

A diver running 2.2 m/s drives out horizontally from the edge of a vertical cliff and 2.9 s later reaches the water below. How far from its base did the diver hit the water?

The main enzyme involved in linking individual nucleotides into dna molecules is

Strictly speaking, as more and more skyscrapers are built on the surface of the Earth, does the day tend to become longer or shorter? And strictly speaking, does the falling of autumn leaves tend to lengthen or shorten the 24-hour day?

For each description, choose the fault it describes. Fault types may be used more than once. A. Strike-Slip fault B. Reverse Fault C.

If a sugar has 11 oxygen atoms, how many hydrogen atoms does it contain?

Why do clouds tend to form around 3:00pm and 6:00am?