Two kg of water are heated from 15ºC to 300ºC at 101 kPa. Determine the amount of heat added during the process. Assume cP is 4.18 kJ/kg·K for liquid water and 1.86 kJ/kg·K for steam. Assume the heat of vaporization is 2258 kJ/kg at 101 kPa.
What will be an ideal response?
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The Local Group is a _____
A) rich galaxy cluster B) poor galaxy cluster C) regular galaxy cluster D) spherical galaxy cluster
For flow over a slightly curved isothermal surface, the temperature distribution inside the boundary layer ?t may be approximated by the polynomial
where y is the distance normal to the surface.
(a) By applying appropriate boundary conditions, evaluate the constants a, b, c, and d.
(b) Then obtain a dimensionless relation for the temperature distribution in the boundary layer.
GIVEN
Flow over a slightly curved isothermal surface
Polynomial temperature distribution:
FIND
(a) The values for a, b, c, and d
(b) A dimensionless relation for the temperature distribution in the boundary layer
SKETCH
Young's Modulus: A wire that is 1.0 mm in diameter and 3.5 m long stretches 3.5 mm when an 8.0-kg tool is hung from it.(a) What is Young's modulus for the material from this wire is made?(b) What is the effective spring constant for the stretching wire?
What will be an ideal response?
Energy and Momentum: In a police rifle test, a 15-g bullet traveling 213 m/s in a vertical direction suddenly buries itself in a 2.4-kg block of wood at rest directly above it. As a result, the bullet-block combination moves vertically upward.(a) Determine the velocity of the bullet-block combination just after the impact.(b) Determine the maximum height reached by the bullet/block combination.(c) Is kinetic energy conserved in this collision?
What will be an ideal response?