Gas in a cylinder initially at a temperature of 290K and a pressure of 1.013xd 10 pa is compressed to one-cight of its initial volume.
The pressure differences for isothermal compression is
A. 8.013:10 pa
B. 1.013 x10 pa
C. 6.013 x 10 pa
D. 7.091310 pa
E. 2.031 310 pa
21. The pressure differences for adiabatic compression is
A.24 kpa
B.16.7 kpa C. 6.031x10pa
D. 36 pa E. 17.605x10 pa
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A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

Describe uniform velocity and variable velocity in short

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2