A. An insulating sphere with radius a has a uniform charge density rho. The sphere isnot centered at the origin but at . Show that the electric field inside the sphere is given by E= rho(r-b)3/εo. b. An insulating sphere of radius R has a spherical holeof radius a located within its volume and centered adistance b from the center of the sphere. The solid partof the sphere has a uniform volume charge density rho. Find the magnitude and direction of the electric field E inside the hole, and show that is uniform over the entire hole.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?