## Physics Help >> Index to Physics Homework Help » Proportions Quiz 1

 New Problems reloads the page with new variable values in all questions. You must do this after grading the test to rework it another time. Make sure to enter your answers in the specified units .
 1
Given Z = kQ/r2, if Z was when R was , what would Z be if r was doubled?

 2
Given Z = kQ/r2, if Z was when Q was , what would Z be if Q was doubled?

 3
Given Z = kQ/r2, if Z = when r = and Q = 5.17, what would Z be when r = 6.87 and Q =?

 4
A cylindrical water tank holds L of water. The volume of a cylinder is given by V = 3.14r2h. How much water (in L) could the tank hold if the radius was doubled?

 5
A cylindrical water tank holds L of water. The volume of a cylinder is given by V = 3.14r2h. How much water (in L) could the tank hold if the height was doubled?

 6
A cylindrical water tank holds L of water. The volume of a cylinder is given by V = 3.14r2h. How much water (in L) could the tank hold if the radius was doubled and the height halved?

Once you have submitted your answers for grading by clicking the grade button, you cannot resubmit answers for the same Problem Set--you must use the 'New Problems' button first.