An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus? (k = 1/4πε 0 =  , 

In the figure Q = 5.8 nC and all other quantities are accurate to 2 significant figures. What is the magnitude of the force on the charge Q? (k = 1/4πε 0 = 

Consider a uniform electric field E oriented in the x direction in empty space. A cube of edge length l , is placed in the field, oriented as shown in Figure below. What is the net electric flux through the surface of the cube? Q 4.png

The capacitive network shown in the figure is assembled with initially uncharged capacitors. A potential difference, V ab = +100V, is applied across the network. The switch S in the network is kept open. Assume that all the capacitances shown are accurate to two significant figures. What is potential difference V cd across the open switch S?

A nonuniform electric field is directed along the x-axis at all points in space. This magnitude of the field varies with x, but not with respect to y or z. The axis of a cylindrical surface, 0.80 m long and 0.20 m in diameter, is aligned parallel to the x-axis, as shown in the figure. The electric fields E 1 and E 2, at the ends of the cylindrical surface, have magnitudes of   and   respectively, and are directed as shown. What is the net electric flux passing through the cylindrical surface?

A positive result for the Indole Test is indicated by a ___________ color at the top of the tube.

What color indicates a positive Citrate test in the iMVIC testing?

From our lab experiments, which of the following plates confirms the presence of E.coli?

True or False: UV light is effective in killing bacteria on both shaded/covered with a lid and unshaded/uncovered culture plates.

What do the lactose fermenting colonies look like on the EMB agar?