Which of the following is a metal

a. sulfur
b. iron
c. oxygen
d. selenium

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

The applied force of 3 washers will increase the applied force on the car to n.

Why, on the molecular level, does changing the amount of baking soda or vinegar affect the amount of carbon dioxide gas produced?