Given that a shape is a parallelogram, which of the following is sufficient to state that it is also a rectangle?
a. the opposite sides are of equal length.
b. the diagonals are of equal length.
c. the opposite sides are parallel.
d. the diagonals bisect each other.

double the distance = divide strength by 4

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card