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1. How much heat is conducted in 24 hours through a pane of glass 15 ft^2 in area and 3/16 inch thick if the surface temperatures are 60 degree F and 10 degree F?
2. How much heat is conducted in 24 hours through a solid concrete building wall 8 inches thick and 400 ft^2 in area if the surface temperatures are 60 degree F and 30 degree F?
A gas sample enclosed in a rigid metal container at room temperature (20.0oC) has an absolute pressure p1. Determine what the new absolute pressure p2
What is the magnetic field in the interior of the solenoid when the interior is filled with a vacuum
A 10 µF capacitor initially charged to 30 µC is discharged through a 1.3 kΩ resistor. How long does it take to reduce the capacitor's charge to 3.0 µC
A positive charge of +2.00 nC exerts an upward 0.200 N force on an unknown charge located 30.0 cm directly below it. Calculate the magnitude of the charge and enter the answer with proper sign for the charge in units C.
A 25 kilogram boy on a playground swing moves with a speed of 4.5 m/s when the 3.0 meter long swing is at its lowest point. Find the angle that the swing makes with the vertical when the boy is at the highest point
The figure shows a lower leg being exercised. It has a 49-Nweight attached to the foot and is extended at an angle with respect to the vertical. Consider arotational axis at the knee, as indicated.
A refrigerator has a 1000 W compressor, but the compressor runs only 20% of the time, If electricity costs $0.10/kWh, what is the monthly (30 day) cost of running the refrigerator
When a pulse is amplified in a linear amplifier, the charge carrier transmit time can cause.
Large conventional electromagnets use water cooling to prevent excessive heating of the magnetic coils. ow many liters of water must circulate by the coils each second if the temperature of the coils is not to exceed 50 degree C
How does hydrogen bonding affect large molecules like proteins? What shapes do proteins take because of this effect?
A rocket is moving in a planar trajectory with a velocity v = C(sub1)t3 + C(sub2)t5 j, where C(sub1) and C(sub2) are constants with the correct units, and either C(sub1) or C(sub2) is negative (but NOT both). what kind of motion is taking place her..
Two 3.0 g spheres are suspended by 9.0 cm long light strings, determine the electric field intensity that enables the spheres to be in equilibrium at ? = 11°
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