Native Americans who used spears to hunt were using wedges. In the third century BC, the Greek scientist Archimedes invented a way to lift water, called the Archimedes screw. It was used to water crops and to move water out of ships.
Student A is accurate and Student B is precise.
<u>Explanation:</u>
Accuracy is nothing but how close a measured value is to its standard value. Precision means how closer two or more than two measurements are to one another, despite whether those values are accurate or not.
In Student A's measurement, 10.11 ml, 10.04 ml and 9.97 ml are closer to the standard value, so they are accurate.
Student B's value 9.45 and 9.5 are closer to one another, so it is precise.
Answer:
At temperature is and relative humidity is 86% therefore, the humidity ratio is 0.0223 and the specific volume is 14.289
At temperature is and Relative humidity is 40% therefore, the humidity ratio is 0.0066 and the specific volume is 13.535.
To calculate the mass of air can be calculated as follows:
Now , we going to calculate the volume,
The time which is required to fill the cistern can be calculated as follows:
Now, putting the value in above formula we get,
Therefore, the hours required to fill the cistern is 4.65 hours.
Explanation:
