-2. This is because it is gaining electrons. Electrons are negative. Therefore it is a negative charge.
Answer:

Explanation:
given data:
power P = 40W
Distance of light bulb from screen is R = 1.9 m
The light intensity considered as the light energy falling on the surface per unit area per unit time
Intensity of light can be determined by using following formula



Answer:
Current = 8696 A
Fraction of power lost =
= 0.151
Explanation:
Electric power is given by

where I is the current and V is the voltage.

Using values from the question,

The power loss is given by

where R is the resistance of the wire. From the question, the wire has a resistance of
per km. Since resistance is proportional to length, the resistance of the wire is

Hence,

The fraction lost = 
19.2 meters/second^2 would be the correct answer.
Try multiplying 3.2 meters/second^2 by 6 and you will receive the answer provided above. If you have any further questions, let me know!
Answer:
<h3>The answer is 10 m/s</h3>
Explanation:
The average speed of the ball can be found by using the formula

d is the distance
t is the time taken
From the question we have

We have the final answer as
<h3>10 m/s</h3>
Hope this helps you