A convex mirror in a hardware store has a focal length of -0.5m. An elf who is 1.5m tall is standing 4.0m in front of the mirror. Calculate the image distance. 1/f = 1/di + 1/do

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

More solar radiation is absorbed by earth’s surface than by

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j