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Will fluorite scratch a penny?
No, fluorite is softer than a penny on the Mohs scale of mineral hardness. Fluorite ranks around 4 on the scale, while a penny ranks around 3.5, so fluorite will not scratch a penny.
Which mineral would a penny scratch?
A penny would scratch minerals with a lower hardness rating such as calcite, gypsum, or talc. Minerals like quartz or topaz would not be scratched by a penny because they are harder than the metal in a penny.
What is the percentage of copper in a 1993 penny?
A 1993 penny is composed of 97.5% zinc and 2.5% copper. Therefore, the percentage of copper in a 1993 penny is 2.5%.
Why does ammonia change color if it cleans a penny?
When ammonia cleans a penny, it reacts with the copper oxide layer on the penny's surface. This reaction removes the oxide layer and exposes the shiny copper underneath, causing the penny to appear brighter or even change color.
What mineral can be scratched by a penny?
The mineral that can be scratched by a penny is talc. Talc is the softest mineral on the Mohs scale, with a hardness of 1. A penny has a hardness of around 3.5 on the Mohs scale.
Why did the penny formula change?
cause the value of the penny was more then wat it was worth
How do you FIND the voulme of a penny?
To find the volume of a penny, you can use the formula for the volume of a cylinder, which is V = π * r^2 * h, where r is the radius of the penny and h is the thickness. The radius of a penny is approximately 0.75 cm, and the thickness is around 0.0598 cm, so you can plug these values into the formula to calculate the volume.
Can Mountain Dew clean a penny?
Yes mountain dew can clean a penny because there are acids in the formula. towards the penny and an acid can clean a pennny..You can also use toothpaste on a cottan ball or ketchup. Using an acid to clean a penny will destroy the collecting value of the coin.
What is the circumference of a penny?
An American pennys diameter is 19.05mm, and using the formula C = Pi*2r = Pi*d. in circumference it is approximately 59.84 mmThe circumference of a [UK] penny is 63.8 mm approx.
What is the circumference of a US penny in cm?
An American penny's diameter is 19.05mm. The formula for the circumference of a circle is C = π * d. Using π ≈ 3.14 gives a circumference of 59.82 mm or 5.982 cm.
What is the surface area of a penny?
Well, honey, a penny has a diameter of about 0.75 inches, so we can calculate the surface area using the formula for the area of a circle. The surface area of a penny is approximately 0.441 square inches. So, there you have it, the glamorous surface area of a humble little penny.
What is the Formula for a penny doubled for 30 days?
The value in dollars will be $0.01 x 229 The number of pennies you will have is 229
What is the singular possessive of penny?
The singular possessive of penny is penny's, as in "penny's worth".
A penny saved ia a penny wasted?
No, "A penny saved is a penny earned".
What is Penny's last name in the book penny from heaven?
Penny's last name in the book "Penny From Heaven" is Falucci.
There are 5 coins 2 nickels and 3 pennies they are in the order of penny nickel penny nickel penny and need to be in the order of penny penny penny nickel nickel you can only move a penny and a nickel?
move the penny on the far right over to the other side on the left and then move the 1st nickel over to the right...hence penny penny penny nickel nickel
A penny that was dropped hit the ground in 4.5 seconds what was the velocity of the penny?
The velocity of the penny when it hits the ground can be calculated using the formula: velocity = acceleration due to gravity x time taken to fall. The acceleration due to gravity is roughly 9.81 m/s^2. Therefore, the velocity of the penny when it hits the ground is 44.145 m/s.
