Posted by Bobby on Sunday, February 13, 2011 at 9:23pm.
a 9v battery is in series with a 10 ohm resistor, a 20 ohm resistor, and a 30 ohm resistor. What is the power absorbed by the 10 ohm resistor?

Physics  bobpursley, Sunday, February 13, 2011 at 9:47pm
current is 9/60 amps
power= I^2 r= (9/60)^2*10

Physics  Nazgul, Monday, March 7, 2011 at 11:19pm
A spring gun is made by compressing a spring (assumed to be perfect) and latching it. A spring of constant k = 60 N/ m is used and the latch is located at a distance of 7 cm from equilibrium. The pellets have mass 4 g. What is the muzzle velocity of the gun?
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