Taking torques about the pivot point A
The vertical force exerted on the boon by the pivot
the Horizontal force
Four very long, current-carrying wires in the same plane intersect to form a square with side lengths of 45.0 cm, as shown in the figure blelow. The currents running through the wires are 8.0 A, 20.0 A, 10.0 A, and I.
Find the magnitude of the current I that will make the magnetic field at the center of the square equal to zero.
What is the direction of the current I (up or down)?
A sled with rider having a combined mass of 120 kg travels over the perfectly smooth icy hill shown in the accompanying figure. How far does the sled land from the foot of the cliff (in m)?
We refer again to the pair of continuous variables X,Y of
Consider the transformation
U = X – Y and V = Y.
1.Determine the joint pdf of U an V using the Jacobian of the transformation, the support of U and V, etc. Do not forget the support.
1.Are U and V independent? What are their marginal probability density functions and parameters?
They are gamma (U) and exponential (V)