# A thin, metallic spherical shell of radius 0.227 m has a total charge of 6.03 × 10 − 6 C placed on it. A point charge of 1.15 × 10 − 6 C is placed at the center of the shell. What is the electric field magnitude E a distance 0.735 m from the center of the spherical shell?

Explanation:

Given

Charge on surface

Point Charge inside sphere

Electric Field at

Treating Surface charge as Point charge and applying Gauss law

where A=surface area up to distance r

## Related Questions

Why heaters are made of thick wires

To conduct more heat

Ted swam 25 m east in a lake and then turned and swam 75 m west. His displacement was 50 m west. What distance did he swim? a. 75m
b. 50 m
c. 25m
d. 100m

100m

Explanation:

The distance talks about how far ted has swam. Distance doesn't specify direction like displacement.

The total distance covered by ted will be addition of the dist covered due east and distance covered due west i.e 25m + 75m = 100m

Therefore he swam a distance of 100m

He swam 25 meters then swam another 75 meters for a total of 100 meters "d."

How are step-up transformers used in the transmission of electrical energy? A They decrease the voltage before it leaves a power plant.
B They increase the voltage for efficient long-distance transmission.
C They increase the current for efficient long-distance transmission.
D They increase the voltage and the current for a short distance
transmission

B

Explanation:

Transformer is a device used to convert low a.c. voltage to high a.c. voltage and vice versa.

There is two types of transformer, they are:

1.Step up transformer

It converts low a.c. voltage into high a.c. voltage.

2.Step down transformer

It converts low a.c. voltage to high a.c. voltage.

Janine was very active throughout her early adulthood and maintained a very high fitness level. If she wants to maintain this fitness level throughout her middle adulthood, how might her participation in physical activity and exercise be impacted? A. Janine should reduce the amount of time she spends exercising because it is easier to maintain fitness levels as you age.
B. Janine should keep her current exercise program because, once a high level of fitness is reached, it never changes.
C. Janine should increase the intensity or length of her exercise programs because it is more difficult to maintain high fitness levels as you age.
D. Janine should stop exercising completely because it is not safe for middle-aged adults to exercise.