PHYSICS 1B Lecture 17: Phys 1B Lecture 17 (10/24/16)

The current in an electric hair dryer is 10 A .

How much charge and how many electrons flow through the hair dryerin 4.0 mins. ?

Express your answer using two significant figures.

N_e =____________

Calculate the magnitude of the electric field at the origin due to the following distribution of charges : 

Set up an 8-point compass at the origin, where north points along the positive y-axis, such as that shown in the diagram to the right. What is the direction of the electric field at the origin created by the charge distribution given in the previous part? (For example, 'N; ' NE; etc ., or if no net field enter 'NIL').

An evacuated 63.8 ml glass bulb is filled with a gas at 22°C at 747 mmHg. The mass of the gas is determined to be 0.103 g.
Identify the gas as one of the following: N₂, Ne, or Ar.