1. (7 points) A 750.00 gram lead block absorbs heat to raise its temperature from 20.0 degrees Celsius to 135.0 degrees Celsius. Using the table above, find the amount of heat energy in Joules that was required. Show your work.

Which is not true about oxygen-17 and oxygen-18?

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g