Tuesday, March 17, 2020
Constitut essays
Declaration of Indep/Constitut essays The Declaration of Independence The framers of our country undertook the daunting task of creating a new country from scratch. Their intent was to create a republic that would be able to withstand the sands of time without losing sight of their democratic ideals. This they have accomplished, for the United States is the oldest large democracy in the world. But how did they succeed? During the era of our countrys birth our founding fathers set up a government that would base itself and its institutions on the idea that humans are not naturally political. In order to ensure order and sovereignty the drafters of a new regime knew that they had to establish a strong and coherent central government. However, this new government would be legitimate only if it was based on the consent of its governed citizens and had the means of checking and balancing itself. The Declaration of Independence and the United States Constitution differ in that the first proclaims principles about natural rights and the latter has the primary function of establishing a concrete formula for a government. Both, however, exemplify beliefs that in order for a large republic to last, it must be based on the federalist belief of a separation of power. The Declaration of Independence tells us that, all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are Life, Liberty, and the Pursuit of Happiness, (Declaration). The author of the document, Thomas Jefferson, had the intent of showing that all men had the natural right of freedom. Since the British monarchy viewed colonists as mere tools for economic gains for the mother country and hence gave them almost no say in the passage of laws directly affecting them, they were inherently unequal compared to citizens that still lived in Britain who had representation in Parliament. Thus, it was our right to dis...
Sunday, March 1, 2020
Calculate Mass from Density Example Problem
Calculate Mass from Density Example Problem Density is the amount of matter, or mass, per unit volume. This example problem shows how to calculate the mass of an object from a known density and volume. Simple Example (Metric Units) As an example of a simple problem, find the mass of a piece of metal that has a volume of 1.25à m3 and a density of 3.2 kg/m3. First, you should notice both the volume and the density use the volume of cubic meters. That makes the calculation easy. If the two units were not the same, youd need to convert one or the other of them so that they would be in agreement. Next, rearrange the formula for density to solve for mass. Density Mass à ·Ã Volume Multiply both sides of the equation by volume to get: Density x Volume Mass or Mass Density x Volume Now, plug in the numbers to solve the problem: Mass 3.2 kg/m3 x 1.25 m3 If you see the units wont cancel out, then you know you did something wrong! If that happens, rearrange the terms until the problem works. In this example, cubic meters cancels out, leaving kilograms, which is a mass unit. Mass 4 kg Simple Example (English Units) Find the mass of a blob of water with a volume of 3 gallons. It seems easy enough, right? Most people memorize the density of water as 1... but thats in grams per cubic centimeters! Fortunately, its easy to look up the density of water in any units. Density of Water 8.34 lb/gal So, the problem becomes: Mass 8.34 lb/gal x 3 gal Mass 25 lb Problem The density of gold is 19.3 grams per cubic centimeter. What is the mass of a bar of gold in kilograms that measures 6 inches x 4 inches x 2 inches? Solution Density is equal to the mass divided by the volume.D m/VwhereD densitym massV volumeWe have the density and enough information to find the volume in the problem. All that remains is to find the mass. Multiply both sides of this equation by the volume, V and get:m DVNow we need to find the volume of the gold bar. The density we have been given is in grams per cubic centimeter but the bar is measured in inches. First we must convert the inch measurements to centimeters.Use the conversion factor of 1 inch 2.54 centimeters.6 inches 6 inches x 2.54 cm/1 inch 15.24 cm.4 inches 4 inches x 2.54 cm/1 inch 10.16 cm.2 inches 2 inches x 2.54 cm/1 inch 5.08 cm.Multiply all three of these numbers together to get the volume of the gold bar.V 15.24 cm x 10.16 cm x 5.08 cmV 786.58 cm3Place this into the formula above:m DVm 19.3 g/cm3 x 786.58 cm3m 14833.59 gramsThe answer we want is the mass of the gold bar in kilograms. There are 1000 grams in 1 kilogram, so:mass in kg mass in g x 1 kg/1000 gmass in kg 14833.59 g x 1 kg/1000 gmass in kg 14.83 kg. Answer The mass of the gold bar in kilograms measuring 6 inches x 4 inches x 2 inches is 14.83 kilograms. Tips for Success The biggest problem students make when solving for mass is not setting up the equation correctly. Remember, mass equals density multiplied by volume. This way, the units for volume cancel out, leaving the units for mass.Be sure the units used for volume and density work together. In this example, mixed metric and English units were intentionally used to show how to convert between units.Volume units, in particular, can be tricky. Remember, when you determine volume, you need to apply the correct formula. Summary of Density Formulas Remember, you can arrange one formula to solve for mass, density, or volume. Here are the three equations to use: Mass Density x VolumeDensity Massà à · VolumeVolume Massà à ·Ã Density Learn More For more example problems, use the Worked Chemistry Problems. It contains over a hundred different worked example problems useful for chemistry students. This density example problem shows how to calculate the density of a material when the mass and volume are known.This example problem shows how to find the density of an ideal gas when given the molecular mass, pressure, and temperature.This example problem shows the steps necessary to convert inches to centimeters. Source CRC Press Handbook of Tables for Applied Engineering Science, 2nd Edition, 1976, Table 1-59.
Calculate Mass from Density Example Problem
Calculate Mass from Density Example Problem Density is the amount of matter, or mass, per unit volume. This example problem shows how to calculate the mass of an object from a known density and volume. Simple Example (Metric Units) As an example of a simple problem, find the mass of a piece of metal that has a volume of 1.25à m3 and a density of 3.2 kg/m3. First, you should notice both the volume and the density use the volume of cubic meters. That makes the calculation easy. If the two units were not the same, youd need to convert one or the other of them so that they would be in agreement. Next, rearrange the formula for density to solve for mass. Density Mass à ·Ã Volume Multiply both sides of the equation by volume to get: Density x Volume Mass or Mass Density x Volume Now, plug in the numbers to solve the problem: Mass 3.2 kg/m3 x 1.25 m3 If you see the units wont cancel out, then you know you did something wrong! If that happens, rearrange the terms until the problem works. In this example, cubic meters cancels out, leaving kilograms, which is a mass unit. Mass 4 kg Simple Example (English Units) Find the mass of a blob of water with a volume of 3 gallons. It seems easy enough, right? Most people memorize the density of water as 1... but thats in grams per cubic centimeters! Fortunately, its easy to look up the density of water in any units. Density of Water 8.34 lb/gal So, the problem becomes: Mass 8.34 lb/gal x 3 gal Mass 25 lb Problem The density of gold is 19.3 grams per cubic centimeter. What is the mass of a bar of gold in kilograms that measures 6 inches x 4 inches x 2 inches? Solution Density is equal to the mass divided by the volume.D m/VwhereD densitym massV volumeWe have the density and enough information to find the volume in the problem. All that remains is to find the mass. Multiply both sides of this equation by the volume, V and get:m DVNow we need to find the volume of the gold bar. The density we have been given is in grams per cubic centimeter but the bar is measured in inches. First we must convert the inch measurements to centimeters.Use the conversion factor of 1 inch 2.54 centimeters.6 inches 6 inches x 2.54 cm/1 inch 15.24 cm.4 inches 4 inches x 2.54 cm/1 inch 10.16 cm.2 inches 2 inches x 2.54 cm/1 inch 5.08 cm.Multiply all three of these numbers together to get the volume of the gold bar.V 15.24 cm x 10.16 cm x 5.08 cmV 786.58 cm3Place this into the formula above:m DVm 19.3 g/cm3 x 786.58 cm3m 14833.59 gramsThe answer we want is the mass of the gold bar in kilograms. There are 1000 grams in 1 kilogram, so:mass in kg mass in g x 1 kg/1000 gmass in kg 14833.59 g x 1 kg/1000 gmass in kg 14.83 kg. Answer The mass of the gold bar in kilograms measuring 6 inches x 4 inches x 2 inches is 14.83 kilograms. Tips for Success The biggest problem students make when solving for mass is not setting up the equation correctly. Remember, mass equals density multiplied by volume. This way, the units for volume cancel out, leaving the units for mass.Be sure the units used for volume and density work together. In this example, mixed metric and English units were intentionally used to show how to convert between units.Volume units, in particular, can be tricky. Remember, when you determine volume, you need to apply the correct formula. Summary of Density Formulas Remember, you can arrange one formula to solve for mass, density, or volume. Here are the three equations to use: Mass Density x VolumeDensity Massà à · VolumeVolume Massà à ·Ã Density Learn More For more example problems, use the Worked Chemistry Problems. It contains over a hundred different worked example problems useful for chemistry students. This density example problem shows how to calculate the density of a material when the mass and volume are known.This example problem shows how to find the density of an ideal gas when given the molecular mass, pressure, and temperature.This example problem shows the steps necessary to convert inches to centimeters. Source CRC Press Handbook of Tables for Applied Engineering Science, 2nd Edition, 1976, Table 1-59.
Calculate Mass from Density Example Problem
Calculate Mass from Density Example Problem Density is the amount of matter, or mass, per unit volume. This example problem shows how to calculate the mass of an object from a known density and volume. Simple Example (Metric Units) As an example of a simple problem, find the mass of a piece of metal that has a volume of 1.25à m3 and a density of 3.2 kg/m3. First, you should notice both the volume and the density use the volume of cubic meters. That makes the calculation easy. If the two units were not the same, youd need to convert one or the other of them so that they would be in agreement. Next, rearrange the formula for density to solve for mass. Density Mass à ·Ã Volume Multiply both sides of the equation by volume to get: Density x Volume Mass or Mass Density x Volume Now, plug in the numbers to solve the problem: Mass 3.2 kg/m3 x 1.25 m3 If you see the units wont cancel out, then you know you did something wrong! If that happens, rearrange the terms until the problem works. In this example, cubic meters cancels out, leaving kilograms, which is a mass unit. Mass 4 kg Simple Example (English Units) Find the mass of a blob of water with a volume of 3 gallons. It seems easy enough, right? Most people memorize the density of water as 1... but thats in grams per cubic centimeters! Fortunately, its easy to look up the density of water in any units. Density of Water 8.34 lb/gal So, the problem becomes: Mass 8.34 lb/gal x 3 gal Mass 25 lb Problem The density of gold is 19.3 grams per cubic centimeter. What is the mass of a bar of gold in kilograms that measures 6 inches x 4 inches x 2 inches? Solution Density is equal to the mass divided by the volume.D m/VwhereD densitym massV volumeWe have the density and enough information to find the volume in the problem. All that remains is to find the mass. Multiply both sides of this equation by the volume, V and get:m DVNow we need to find the volume of the gold bar. The density we have been given is in grams per cubic centimeter but the bar is measured in inches. First we must convert the inch measurements to centimeters.Use the conversion factor of 1 inch 2.54 centimeters.6 inches 6 inches x 2.54 cm/1 inch 15.24 cm.4 inches 4 inches x 2.54 cm/1 inch 10.16 cm.2 inches 2 inches x 2.54 cm/1 inch 5.08 cm.Multiply all three of these numbers together to get the volume of the gold bar.V 15.24 cm x 10.16 cm x 5.08 cmV 786.58 cm3Place this into the formula above:m DVm 19.3 g/cm3 x 786.58 cm3m 14833.59 gramsThe answer we want is the mass of the gold bar in kilograms. There are 1000 grams in 1 kilogram, so:mass in kg mass in g x 1 kg/1000 gmass in kg 14833.59 g x 1 kg/1000 gmass in kg 14.83 kg. Answer The mass of the gold bar in kilograms measuring 6 inches x 4 inches x 2 inches is 14.83 kilograms. Tips for Success The biggest problem students make when solving for mass is not setting up the equation correctly. Remember, mass equals density multiplied by volume. This way, the units for volume cancel out, leaving the units for mass.Be sure the units used for volume and density work together. In this example, mixed metric and English units were intentionally used to show how to convert between units.Volume units, in particular, can be tricky. Remember, when you determine volume, you need to apply the correct formula. Summary of Density Formulas Remember, you can arrange one formula to solve for mass, density, or volume. Here are the three equations to use: Mass Density x VolumeDensity Massà à · VolumeVolume Massà à ·Ã Density Learn More For more example problems, use the Worked Chemistry Problems. It contains over a hundred different worked example problems useful for chemistry students. This density example problem shows how to calculate the density of a material when the mass and volume are known.This example problem shows how to find the density of an ideal gas when given the molecular mass, pressure, and temperature.This example problem shows the steps necessary to convert inches to centimeters. Source CRC Press Handbook of Tables for Applied Engineering Science, 2nd Edition, 1976, Table 1-59.
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