4. A parallel plate capacitor consists of two plates, each of area 0.02 mʻ, separated by a distance 0.001 m. The capacitor is initially charged to a potential difference of 4000 V which decreases to 1500 V when a slab
of dielectric is inserted to fill the gap between the plates.
Calculate
a) The original capacitance and the charge on each plate
[6]
b) The capacitance after insertion of the dielectric.
[3]
c) The dielectric constant.
[2]

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe