You can make a smoothie in a blender with a power of 350 watts and an efficiency of 75 percent. How much energy is actually being used to make the
smoothie in 120 seconds?
A. 31,500 J
B. 40,125 J
C. 38,900 J
O D. 10,500 J

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to