922
Physics Electromagnetic Waves Level: High School
An 80 kg astronaut has gone outside his space capsule to do some repair work. Unfortunately, he forgot to look his safety tether in space , and he has drifted 5.0 m away from the capsule . Fortunately , he has a 1000 W portable laser with fresh batteries that will operate it for 1.0 hr. His only chance is to accelerate himself toward the space capsule by firing the laser in the opposite direction. He has a 10-hr supply of oxygen .What time will it take the astronaut to reach the space capsule ?(Hours)
921
Physics Electromagnetic Waves Level: High School
A simple series circuit consists of a 200 ohm resistor , a 22.0 V battery , a switch , and a 3.50 pF parallel-plate capacitor (initially uncharged ) with plates 5.0 mm apart . The switch is closed at t = 0 s .After the switch is closed , find the maximum electric flux through the capacitor . (Vm) and the maximum displacement current through the capacitor ,(A)
920
Physics Electromagnetic Waves Level: High School
A 10-cm diameter parallel plate capacitor has a 1.00 mm spacing . The electric field between the plates is increasing at the rate 1.0 x 10^6 V/m/s . What is the magnetic field strength 3.0 cm from the axis ? (T)