The electrostatic potential satisfies Laplace’s equation in any region free of charges. Also the heat equation (Sec. 12.5) reduces to Laplace’s equation if the temperature u is time-independent ("steady-state case"). Using (20), find the potential (equivalently: the steady-state temperature) in the disk if the boundary values are (sketch them, to see what is going on)

How do hydroponic plants differ from nonhydroponic plants? a.) hydroponic plants can grow in a dryer soil. nonhydroponic plants grow in moist soil. b.) hydroponic plants grow on other plants and are known as air plants. nonhydroponic plants do not grow on other plants. c.) hydroponic plants can only grow in rain forests. nonhydroponic plants cannot grow in rain forests. d.) hydroponic plants are grown without soil. nonhydroponic plants are grown in soil.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.