An electric heater operating at 120. volts draws
8.00 amperes of current through its 15.0 ohms of
resistance. the total amount of heat energy
produced by the heater in 60.0 seconds is
(1) 7.20 × 10^3 j (3) 8.64 × 10^4 j
(2) 5.76 × 10^4 j (4) 6.91 × 10^6 j

With these questions , 15 pts & brainliest

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories