HELP!! Which statement best describes how the distance from a large river affects an area's climate in the summer?
Regions far from rivers experience less variation in air temperatures.
Regions far from rivers have land surfaces that remain cool during the entire season.
Regions near rivers have water surfaces that rapidly change in temperature from cold to hot.
Regions near rivers experience winds from the water that prevent extreme temperature changes.

the answer is definitely c.

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.