"A bicycle's brakes apply 299 N of frictional force to the wheels as the bike moves 24 m for 3.0 s. How much WORK do the brakes do?"

0.62 N

Explanation:

first of all: 3.0 s = 0.05 m

Let ? be the work that brakes do at 3.0s

24 m > 299 N

0.05 m >?

? = (0.05 m x 299 N)/ 24

? = (14.95)/ 24

? = 0.622 N

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.