6.
A beam AB was balanced by suspending two masses
of 25 g and 16 g at the ends A and B respectively as
shown in Fig. 3.11.
A
100
B
25 g
16 g
Fig. 3.11
Determine the position of the pivot (Assume the
weight of the beam is negligible) (3 marks)

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c