Physics Answers

A capacitor consists of two square metal plates, each measuring 5.00×10^2m on a side. In between the plates is a sheet of mica measuring 1.00×10^4m thick.

(a) What is the capacitance of this capacitor? If the charge in one plate is 2.00×10^8C.

(b) What is the potential difference?

(c) What is the electric field between the plates?

Give: Permittivity of Mica (E= 4.8×10^-11C²/N.m²)

A point charge of -6.00×10^9C is 3.00m from point A and 5.00m from point B. (a) Find the potential at point A and point B.

(b) How much work is done by the electric field in moving a 2.00 nC particle from point A to point B?

2. Determine the magnitude of electric field value if a distance of 35 cm from a 0.00050 C

charge.

an appliance cord is consist of two wires, about 2m long with individual wire which is about 3mm apart and carry a current of 8A DC. calculate the force exerted by the wires.

protons in a uniform magnetic field 0f .3 T follow a circular trajectory with 20 com radius. determine the speed of protons. ( q = 1.6 x 10^-19 and m = 1.673 x 10^-27 K )

A man of mass 50kg ascends a flight of stairs 5m high in 5 seconds.If acceleration due to gravity is 10m/second-2.The power expended is???

A ball of mass 8kg falls from a height of 100m . Neglecting air resistance, calculate its total energy after falling a distance of 40m

1. A uniform electric field E = 6500 N/C passing through a flat square area

A = 10m2

. What is the electric flux?

Find the current through each battery. 18 Ω 9 V- 3Ω 3 V I3=

Determine vector A x C if A = 5i - 4j and B = 5i + 2j