Units and Unit Conversion - MCAT Physical

Young's Modulus is equal to the stress over strain on an object. The stress on an object refers to the pressure that is put on an object, and can be given the below equation.

The strain on an object refers to the amount an object is deformed in the direction of the force. It can be given the below equation, where is the change in length and is the original length.

Combining these two equations we can determine Young's Modulus.

In this question, you will have to use the given equation twice; once for melting point and once for boiling point. Let’s first convert the melting point to Fahrenheit. The question states that the melting point of water is . Plugging this into the equation gives:

The melting point of water is . Similarly, we convert the boiling point of water to Fahrenheit:

The boiling point is . The difference between boiling point and melting point in Fahrenheit is:

Kelvin is a temperature scale that is named after Lord Kelvin. Lord Kelvin, through his experiments, found that absolute zero occurs at a temperature of . Later, scientists defined Kelvin as the fraction of the temperature of water at its triple point (the point on a phase diagram at which water exists as a solid, a liquid, and a gas). This is because the temperature at the triple point of water, in Celsius, is . In Kelvin scale, the triple point of water occurs at .

The question states that the melting point of iron is . We can use the given equation to convert this to Celsius.

This means that the melting point of iron is . At this point you can choose the right answer because there is only one answer option that has ; however, let’s solve for Kelvin. The second equation you need to know is the conversion from Celsius to Kelvin:

The melting point of iron in Kelvin is:

To find the right answer, we need to know two formulas:

The simplest way to compare these choices will be to convert them all to Kelvin.

This makes our answer .

Young's Modulus is equal to the stress over strain on an object. The stress on an object refers to the pressure that is put on an object, and can be given the below equation.

The strain on an object refers to the amount an object is deformed in the direction of the force. It can be given the below equation, where is the change in length and is the original length.

Combining these two equations we can determine Young's Modulus.

In this question, you will have to use the given equation twice; once for melting point and once for boiling point. Let’s first convert the melting point to Fahrenheit. The question states that the melting point of water is . Plugging this into the equation gives:

The melting point of water is . Similarly, we convert the boiling point of water to Fahrenheit:

The boiling point is . The difference between boiling point and melting point in Fahrenheit is:

Kelvin is a temperature scale that is named after Lord Kelvin. Lord Kelvin, through his experiments, found that absolute zero occurs at a temperature of . Later, scientists defined Kelvin as the fraction of the temperature of water at its triple point (the point on a phase diagram at which water exists as a solid, a liquid, and a gas). This is because the temperature at the triple point of water, in Celsius, is . In Kelvin scale, the triple point of water occurs at .

The question states that the melting point of iron is . We can use the given equation to convert this to Celsius.

This means that the melting point of iron is . At this point you can choose the right answer because there is only one answer option that has ; however, let’s solve for Kelvin. The second equation you need to know is the conversion from Celsius to Kelvin:

The melting point of iron in Kelvin is:

To find the right answer, we need to know two formulas:

The simplest way to compare these choices will be to convert them all to Kelvin.

This makes our answer .

Young's Modulus is equal to the stress over strain on an object. The stress on an object refers to the pressure that is put on an object, and can be given the below equation.

The strain on an object refers to the amount an object is deformed in the direction of the force. It can be given the below equation, where is the change in length and is the original length.

Combining these two equations we can determine Young's Modulus.

In this question, you will have to use the given equation twice; once for melting point and once for boiling point. Let’s first convert the melting point to Fahrenheit. The question states that the melting point of water is . Plugging this into the equation gives:

The melting point of water is . Similarly, we convert the boiling point of water to Fahrenheit:

The boiling point is . The difference between boiling point and melting point in Fahrenheit is:

Kelvin is a temperature scale that is named after Lord Kelvin. Lord Kelvin, through his experiments, found that absolute zero occurs at a temperature of . Later, scientists defined Kelvin as the fraction of the temperature of water at its triple point (the point on a phase diagram at which water exists as a solid, a liquid, and a gas). This is because the temperature at the triple point of water, in Celsius, is . In Kelvin scale, the triple point of water occurs at .

The question states that the melting point of iron is . We can use the given equation to convert this to Celsius.

This means that the melting point of iron is . At this point you can choose the right answer because there is only one answer option that has ; however, let’s solve for Kelvin. The second equation you need to know is the conversion from Celsius to Kelvin:

The melting point of iron in Kelvin is:

Young's Modulus is equal to the stress over strain on an object. The stress on an object refers to the pressure that is put on an object, and can be given the below equation.

The strain on an object refers to the amount an object is deformed in the direction of the force. It can be given the below equation, where is the change in length and is the original length.

Combining these two equations we can determine Young's Modulus.

To find the right answer, we need to know two formulas:

The simplest way to compare these choices will be to convert them all to Kelvin.

This makes our answer .

In this question, you will have to use the given equation twice; once for melting point and once for boiling point. Let’s first convert the melting point to Fahrenheit. The question states that the melting point of water is . Plugging this into the equation gives:

The melting point of water is . Similarly, we convert the boiling point of water to Fahrenheit:

The boiling point is . The difference between boiling point and melting point in Fahrenheit is:

Kelvin is a temperature scale that is named after Lord Kelvin. Lord Kelvin, through his experiments, found that absolute zero occurs at a temperature of . Later, scientists defined Kelvin as the fraction of the temperature of water at its triple point (the point on a phase diagram at which water exists as a solid, a liquid, and a gas). This is because the temperature at the triple point of water, in Celsius, is . In Kelvin scale, the triple point of water occurs at .

The question states that the melting point of iron is . We can use the given equation to convert this to Celsius.

This means that the melting point of iron is . At this point you can choose the right answer because there is only one answer option that has ; however, let’s solve for Kelvin. The second equation you need to know is the conversion from Celsius to Kelvin:

The melting point of iron in Kelvin is: