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Question: A brass slab is cooled at steady state by water flow on the outside surface of its wall.
The brass has a thermal conductivity of 60 Btu/(h ft °F). The free stream water temperature is 60°F. If the temperature in the brass at point A is 2WF and at point B is lWF, what is the heat transfer coefficient on the outside surface?
Calculate the force a piano tuner applies to stretch a steel piano wire 8.80 mm, if the wire is originally 0.850 mm in diameter and 1.35 m long
Find the capacity of this channel in bits per unit time assuming that all four symbols have equal durations
A uniform thin circular ring of radius 2 millimeter has uniformly distributed charge 2.00 mC. Determine how much is the percentage error
The primary coil of an ideal transformer is connected to a 120-Vsource and draws 1.0A. The secondary coil has 800 turns andsupplies an output current of 10A to run an electrical device.
A sheet of glass (n = 1.50) is coated with a 500 nm thick layer of cubic zirconia (n = 2.18). How many phase changes do the reflected rays undergo
A glass sheet is covered by a very thin opaque coating. In the middle of this sheet there is a thin scratch 1.25×10-3mm thick. The sheet is totally immersed beneath the surface of a liquid.
A 100g aluminum (c=900J/kg C) calorimeter contains 250 g of water (c = 4186J/kg C). The two substances are in thermal equilibrium at 10 degrees C. Two metallic blocks are placed in the water.
A 67.0-kg person throws a 0.0500-kg snowball forward with a ground speed of 25.0 m/s. A second person, with a mass of 59.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.10 m/s, and..
A simple pendulum makes 139 complete oscillations in 3.10 min at a location where g = 9.80 m/s2. Find the length of the pendulum
In a television set, electrons are accelerated from rest through apotential difference of 15 kV. Theelectrons then pass through a 0.29 Tmagnetic field that deflects them to the appropriate spot on thescreen. Find the magnitude of the maximum magnetic..
An ultracentrifuge accelerates from rest to 100,000 rpm in 3.00 minute. Find the radial acceleration of this point at full rpm
A skier weighing .80kN come down a frictionless ski run that is circular (R=30 m) at the bottom, what is her speed at the bottom of the hill
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