What is the order of the types of nuclear radiation from lowest to highest

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm

What does si stand for, when referring to a system of measurement