A physics student stands at the top of a set of bleachers. They drop a basketball and it lands 6 seconds later.
a. How high are the bleachers?
b. How fast was the basketball traveling at the time it landed?

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

The speed of light can be used to measure the

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v