Body's surface tissue as layer of thickness X1=5 cm which has a thermal conductivity K1= o.59 J/m. s.C .

This is surrounded by a layer of tissues fat of thickness X2=2 cm

with K2=0.21 J/m. s.0C .The body's interior is at temperature T1=37C

and the skin temperature is T2=33.5C

.What is the heat loss per unit area?

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Which type of wave can travel without a medium

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?