A 1.00 kg hammer dropped from a height of 2.00 m on the moon (a frictionless environment where g = 1.63 m/s2 ) gains how much kinetic energy?

a. 1.00 J b. 1.63 J c. 2.00 J d. 3.26 J

Adielectric-filled parallel-plate capacitor has plate area a = 30.0 cm2 , plate separation d = 9.00 mm and dielectric constant k = 3.00. the capacitor is connected to a battery that creates a constant voltage v = 15.0 v . throughout the problem, use ϵ0 = 8.85x10-12 c2/n. m2 . find the energy u1 of the dielectric-filled capacitor.