Answer:you can just look this up yknow?
Explanation:
If the plane is far away and flying directly toward or away from
the girl, the plane would appear not to be moving. Also, the plane
would not be moving in the frame of reference of the people on
the plane. If you are matching speed and direction of the plane.
First you need to know about two laws, which are:
1) Coulomb's law
2) Newton's law of gravitation
1.
According to Coulomb's law, Electric force between TWO charges is:

-- (A)
Where, k = 1/(4*π*epsilon_not) =

Both

and

= -1.61 x

C
r = Distance between the two charges = 2.00m
Plug-in the above values in (A), you would get:

= (9 *

) (1.61 *

* 1.61 *

) / (2*2)

=

N
2.According to Newton's law of gravitation:

-- (B)
Where G = Gravitational constant = 6.674 *

m1 = m2 = Mass of the electron =

kg
r = 2.0 m
Plug-in the above values in (B), you would get:

= (6.674 *

) (

*

}[/tex]) / (2*2)

=

N

=

Now do Fe over Fg, you would get:
Ans: So the blanks are:1) 5.822) 1.383) 4.23
-i
Answer:
The difference between the cost of operating LED and incandescent bulb is $5.1
Explanation:
We are given the cost of electricity that is 12.75 cents per kWh. We want to find out the difference in the operating cost of an incandescent and LED bulb for a time period of 2,000 hours.
Since we are not given the rating of the incandescent bulb and LED bulb, we will assume their ratings.
For a light intensity of 250 Lumens;
The average rating of an LED bulb is approximately 5 Watts.
The average rating of an incandescent bulb is approximately 25 Watts.
Now lets find out the kWh of each bulb.
Energy = Power×Time
For LED bulb:
E = 5×2,000 = 10,000 Wh
Divide by 1000 to convert into kWh
E = 10,000/1000 = 10 kWh
Cost = 12.75×10 = 127.5 cents
Cost = $1.27
For Incandescent bulb:
E = 25×2,000 = 50,000 Wh
Divide by 1000 to convert into kWh
E = 50,000/1000 = 50 kWh
Cost = 12.75×50 = 637.5 cents
Cost = $6.37
Difference in Cost:
Difference = $6.37 - $1.27 = $5.1
Therefore, the difference between the cost of operating LED and incandescent bulb is $5.1.