Afan-shaped auditorium has inner radius of rₐ and outer radius of rₑ with angle of a.
the stage (at the center r ∂u/∂t=c²*(∂²u/∂r²+1/r*∂u/∂r+1/r²*∂² u/∂θ²)
a. derive the steady-state temperature distribution in the auditorium.
b. how would you expect the temperature distribution changing if the thermal diffusivity of air changes to (2c)² and why?

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)