1) A 20 ft long x 15 ft wide room has a floor live load of 100 psf and dead load of 85 psf. Determine the floor’s total load in kips. 2) A 40 ft wide x 125 ft tall x 20 ft deep structure is subjected to a uniformly distributed horizontal (lateral) load of 50 psf on the wall of its broad face. Determine the total load on the broad face of the wall in kips.

3) A 2,000 lb load is placed on top of a rectangular prism having an 8” x 8” horizontal top surface. Determine the stress in the prism.

ice to water 1 water to vapour 2 latent heat

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000