A copper wire that is 1 mm thick and 30 cm long is connected to a 1 V battery. (The resistivity of copper is 1.69 x 10-8 Ω⋅m.) Find the current in the wire in [A] assuming it's at room temperature. What is the power in [W] dissipated in the wire at room temperature?

This is the number of complete movements of a wave per second.

Which missing item would complete this alpha decay reaction ? > 228/88ra + 4/2he a.224/96 rn b. 232/90 th c. 230/92 u d. 235/92 u

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?