Atorsion spring described below is used in a hand-held spring clamp. the jaws of the clamp are 1.5 inches from the pivot. the spring angle is 45° when the clamp is closed and 0° when the clamp is open. determine torsional spring constant, clamping force when closed and clamping force when open. use units of torque/rev for torsional spring constant. ignore end effects from the spring arms.

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.