**1. The volume V of a cylinder of radius R and height H is given by**

`V=piR^2H`*.* The volume of the cylinder was measured with an uncertainty of 10% and the height was measured with an uncertainty of 6%. What is the uncertainty in the radius of the cylinder?

**2. Two lengths, a and b , are measured to be 51 ± 1 cm and 49 ± 1 cm respectively. In which of the following quantities is the percentage uncertainty the largest?**

a+b

**3. What is a correct value for the charge on an electron?**

**4. A ball is thrown with velocity u at an angle of 55° above the horizontal. Which of the following is the magnitude of the horizontal component of velocity?**

**5. Which of the following expresses the Which of the following expresses the units of capacitance in terms of fundamental units?units of capacitance in terms of fundamental units?**