a) Using the provided information about the density of gold, the sample size, thickness, and the following
equations and conversion factors, find the area of the gold leaf:
First, find the volume of the sample and then find the area of the sample.
b) Using the provided information from part a), the radius of the cylinder, and the following equation for the
volume of a cylinder, find the length of the fiber
From the equation(1 - 8), the density (p) of the gold is defined as the mass of the gold (m) per its volume (V):
(a) The volume of the thin leaf is found to be;
From equation (1), the volume of the thin leaf will be;
Now, by converting the volume to SI units, we get
The thickness of the thin leaf:
(b) The volume of cylindrical fiber is equal to the volume of the thin leaf (same gold)
As known, the volume of the cylindrical fiber is;
This cross-section area is circular and given by:
When a cold drink is taken from a refrigerator, its temperature is 5 degree C. After 25 minutes in a 20 degree C room its temperature has increased to 10 degree C. What is the temperature of the drink after 50 minutes?
How many minutes are there in hours?
Find the answer for power .
The following law describes the relationship between gas volume and pressure: ________. A)Boyle's law; B)Henry's law; C)Charles' law; D)Dalton's law
If an electric switch is open then no current flows through the circuit.
The price elasticity of supply of a good is 0.8. Its price rises by 50 per cent. Calculate the percentage increase in its supply.
How many quarts are in 10 gallons?
When the net force acting on an object is zero, the total momentum of the system will:
B)increase with time;
C)decrease with time;
D)None of these
How many centimeters are in four meters?
A notebook computer has a mass of 2.25 kilograms. About how many pounds does the notebook weigh?
If the dot product of two non-zero vectors is zero, then the vectors A)are parallel to each other. B)are perpendicular to each other. C)can have any orientation. D)are anti-parallel to each other.
Which is longer 5 miles or 10 kilometers?
9 grams is how many milligrams?
How to write in scientific notation?