Consider a wire that has resistance r, length l and the cross-sectional area

a. the correct expression for the resistivity of that wire is:

What is the momentum of a 248 g rubber ball traveling at 30.0 m/s?

Which of the following will cause acceleration? A. maintaining constant velocity B. moving in one direction only C. the presence of unbalanced forces acting on an object D. two forces of equal magnitude and opposite directions acting on an object

A star has a mass that is 1/5 that of earth's sun. what will happen to the star as itages?

What role has science played in history?

The electrical force on a charge of 2 C is 60 N. What is the value of the electric field at the place where the charge is located?

If a car goes along a straight road heading east and speeds up from 45 ft/s to 60. ft/s in 5 sec, calculate the acceleration

To generate higher profit margins, producers must work to increase their total supply. increase their total expenses. decrease their customer base. decrease their production costs

Solar energy isn't usually used as the only power source for a reason because what

What particle can be stopped by skin

What was significant about the atomic theory that democrituis proposed?