A25.0−gsample of an alloy at 93.00°cis placed into 50.0 gof water at 22.00°cin an insulated coffee-cup calorimeter with a heat capacity of 9.20 j/k. if the final temperature of the system is 31.10°c, what is the specific heat capacity of the alloy?

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