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:
A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).
E S *
The "E" represents Earth, "S" represent Sun, and the "*" represents the nearest star(which is Proxima Centauri).
The main thing to worry about here is units, so ill label everything out.
D'e,s'(Distance between earth and sun) = .<span>00001581 light years
D'e,*'(Distance between earth and Proxima) = </span><span>4.243 light years
Now this is where it gets fun, we need to put all the light years into centimeters.(theres alot)
In one light year, there are </span>9.461 * 10^17 centimeters.(the * in this case means multiplication) or 946,100,000,000,000,000 centimeters.
To convert we multiply the light years we found by the big number.
D'e,s'(Distance between earth and sun) = 1.496 * 10^13 centimeters<span>
D'e,*'(Distance between earth and Proxima) = </span><span>4.014 * 10^18 centimeters
</span>
Now we scale things down, we treat 1.496 * 10^13 centimeters as a SINGLE centimeter, because that's the distance between the earth and the sun. So all we have to do is divide (4.014 * 10^18 ) by (<span>1.496 * 10^13 ).
Why? because that how proportions work.
As a result, you get a mere 268335.7 centimeters.
To put that into perspective, that's only about 1.7 miles
A lot of my numbers came from google, so they are estimations and are not perfect, but its hard to be on really large scales.</span>
Marble. This is because granite is of a different chemistry that is not nearly as vulnerable to acidic rain as marble.
Answer:
The unit rate is $0.22 lb
Explanation:
The given parameters are;
The price for 18 lb = $3.99
We have;
The unit rate is the price for one unit. Whereby the unit of measurement is the lb, we have that one unit = 1 lb.
Therefore, given that 1 lb = 18 lb/18, the price of 1 lb which is the unit rate is given as follows;
18 lb price = $3.99
Divide both sides by 18 to get;
18 lb/18 = $3.99/18 = $0.221
Therefore, we have;
1 lb = 18 lb/18 = $0.221
The unit rate, which is the cost for 1 lb to the nearest hundredth = $0.22/lb.
