Need it by 4:20 please

well 4.2 times 10 is 42 and 6.1 times 10 is 61

Explanation:

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

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.