In the absence of friction, small free motions of the pendulum are governed by the equation where (t) is the angle of the pendulum inclination at time t and g is the acceleration due to the gravity. (a) Find the frequency of the oscillations of the pendulum. (b) How does the frequency change when the length of the rod doubles? (c) How does the frequency change when the mass of the object doubles? d) On the moon the acceleration due to the gravity is 6 times less than on the earth. How does the frequency change when the pendulum is on the moon?

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

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.

The ph is the a.independent variable b.the dependent variable c.control group