Recent content by alicemunro

Homework Statement two identical point charges are on diagonally opposite corners of a square that is 0.5m on a side. Each charge is +3 x 10^ -6 C. How much work is done by the electric force when 1 charge moves to an empty corner? Homework Equations W= u= qV = q(kq/r) = kq^2/ r (is this...

Homework Statement A positive charge, q1 is at (-20cm,0). An equal and opposite charge q2 is at (20cm, 0). A positive charge q3, equal to q1, is placed at (60cm,0). What is the potential energy of the three charges?? Homework Equations EPE= kq / r The Attempt at a Solution EPE...

im pretty sure you have to convert atms to Pa. 1 x 10^5 Pa = 1atm

thanks profusely

AH oh wait is this how you solve it: P(1) + 1/2pv^2 = P(2) + 1/2pv^2 P(1) - P(2) = 1/2p(v2^2 - v1^2) P(1) - P(2) = 1/2(1.29)(27^2 - 0^2) P(1) - P(2) = 470 Pacorrect??

so if the air inside the tarpaulin can be considered stationary, you can use P(2) = P(1) + pgh. And the pgh would = 0, so the pressure inside would equal 1 x 10^5 Pa?

and i think the pgy's on either side of the equation cancel out because this is horizontal, so y=0.

Homework Statement Consider a truck with a tarpaulin on top of it. When the truck is stationary the tarpaulin lies flat, but it bulges outward when the truck is speeding down the highway. The truck is traveling at 27 m/s. The density of air is 1.29 kg/m^3. by how much does the pressure...