The temperature of 5 pounds of water is 40 degrees. btus are added until the temp of
the steam produced rises to 280 degrees fahrenheit. how many btus are absorbed by
the water
the temperature of 15 pounds of ice is 32 degrees fahrenheit. how many btus are absorbed by the water?

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