You can find the emf of the battery by using:
Q = CV.
Q = Charge in capacitor plates = 30μC
C = Capacitance of the capacitor = 30μF
V = Q/C = 30/30 = 1V
Ans: The emf of the battery = 1V.
The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Hope this helps :)
Two acetate rods, both charged with silk would repel because they are both have positively charged electrons.
Explanation: Opposite charges attract. Like charges repel.
Water behind a tall dam, a bowling ball on a high shelf, and a
roller coaster at the top of the first hill, are examples of gravitational
potential energy.
A stretched rubber band, and a compressed spring, are examples
of elastic potential energy.
A battery and a sugar cookie are examples of chemical potential energy.
