An empty capacitor is capable of storing 1.0 × 10-4 j of energy when connected to a certain battery. if the distance between the plates is halved and then filled with a dielectric (κ = 2.8), how much energy could this modified capacitor store when connected to the same battery?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

Most short-period comets do not have randomly oriented orbits because