Approximately how long should it take 8.2 kgkg of ice at 0∘C∘C to melt when it is placed in a carefully sealed Styrofoam ice chest of dimensions 25 cmcm ×× 35 cmcm ×× 55 cmcm whose walls are 1.2 cmcm thick? Assume that the conductivity of Styrofoam is double that of air and that the outside temperature is 28 ∘C∘C.

An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?

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

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90