Answer:
<h2><u>Constant</u></h2>
Explanation:
Please don't comment in this question's comment box
<h2>Thanks</h2>
Answer:
FALSE!!!
Explanation:
Business letters are formal and normally given to someone of higher importance.
It will travel slowest through gases.
Answer:
Density is defined as:
Density = Mass/Volume
Now, density is an intensive property, this means that if you have 10 grams of a given material or 1000 grams of the same material, in both cases you will find the same density.
Then a roll of 50 pennies has the same density that a single penny.
The measures of a single penny are:
Mass = 2.5 g
Thickness = 1.52 mm
Radius = 9.525 mm
The coin is a cylinder, and the volume of a cylinder is:
V = pi*r^2*h
where:
pi = 3.14
r = radius = 9.525mm
h = thikness = 1.52mm
The volume is:
V = 3.14*(9.525mm)^2*1.52mm = 433.015 mm^3
The density will be:
D = 2.5g/433.015mm^3 = 0.00577 g/mm^3
V = f(wavelength)
22.0 = 0.0680 (wavelength)
wavelength = 323.52 m
