Recent content by trans_pie

1. A 1000m long and 200m wide (when at rest) spaceship equipped with a chronometer is sent on a roundtrip to their Galactic Base, 8 light years away. (a) Astronauts start the trip after celebrating their captains 29th birthday and they want to make a round trip and return to Earth on the eve...

http://answerboard.cramster.com/physics-topic-5-300761-0.aspx Three batteries and four resistors are connected as shown above. Find (a) the current in each resistor, (b) the power supplied by each battery, and (c) the power dissipated in each resistor. how to calculate all of these?

i got the answer 2π€/ln(b/a) is it correct?

Find the capacitance per length of a co-axial cable with a conductor of radius a and a thin shield of radius b.

[b]1. A 20 pF capacitor is charged to 3.0 kV and then removed from the charger and connected to an uncharged 50 pF capacitor. (a) what is the new charge on each capacitor? (b) Find the initial energy stored in the 20 pF capacitor and the final energy stored in the two capacitors. Is...