If ∠g=30degrees, g=3, k=4 what is the approximate value of h?
2.2 or 4.7

4.7

5.7

In a good thermo flask the main cause of heat loss is

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

The strong nuclear force acts over a small distance than the electrostatic force. true or false