If the charge on each of two point sources is doubled, the electrostatic force between them A) is four times as great
B) is twice as great
C) remains the same
D) is one-half as great

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.

Arrange the images in order to show how lake-effect snow occurs.

Which bonds are found inside a water molecule