Answer:
Spring tides are extremely high and extremely low. This is created when the sun and moon pull together.
Explanation:
Answer:
- <em>The measurements taken by </em><em><u>Jay</u></em><em> are least likely to contain random errors.</em>
Explanation:
All experimental measures are subject to errors.
Even when the colorimeter is properly calibrated and correctly used, there are random errors.
Random errors are are due to fortuitous factors, such as minor oversight by the observer or small changes of the conditions under which the measurements are made.
You can minimize the random errors by increasing the number of measurements, because the random errors tend to happen in any direction; some measures will be greater and other will be less than the true value.
Chance will make that errors in on direction cancel with errors in the opposed direction, making the average the best measure.
Thus, <em>Jay</em>, by <em>repeating the experiment five times and taking the average measurement</em>, is making that<em> his measurements are</em> <em>least likely to contain random errors.</em>
Petroleum is a significant source of US greenhouse gas emissions.
Answer:
Explanation:
The measurement <em>1246g</em> shows four figures. To show this measurement to <em>three signficant figures</em> you must change the last digit to 0 and round properly.
To report the measurement 1246g to three significant figures you must replace the last digit (the 6) with 0 and round the previous one (the 4) to the closest integer: 1250 is closest to 1246 than 1240, so the correct rounding is 1250.
In an integer number, the zeros after the last none zero digit are not sginificant figures; that is why the zero in 1250 g is not significant and this number has just three significant figures.
