Two light pulses are emitted simultaneously from a source. The pulses take parallel paths to a detector 6.75 m away, but one moves through air and the other through a block of ice. Determine the difference in the pulses' times of arrival at the detector.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

Five structural isomers have the formula c6h14. where needed, draw the structure and give the iupac name of all five isomers.

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope