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If the temperature inside a room is 298K and the temperature outside is 263K, calculate the maximum value of r (relative humidity) that can be accommodated inside the room without the windows fogging when (a) the interior part of the windows is not thermally isolated (i.e heat is transferred freely) from the exterior part, and (b) it is thermally isolated. Assume lv (latent heat of vaporization) = 2,500,000 J/kg and cw = 4218 J/kgK. Please show all work.
How many moles of gas are in a balloon with a volume of 5.07 liters at a temperature of 298 K and a pressure of 1.11 atm
Consider the posiblity of making a LED from diamond by constructing a pn junction from a diamond doped with boron and a diamond doped with phosphorus. Estimate the wavelength of the light emitted.
Electromagnetic waves and sound waves can have the same frequency. What is the wavelength of 1.10 kHz ectromagnetic wave
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
A diving board of length 3.00m is supported at a point 1m from the end, and a diver weighing 520 m stands at the free end . The diving board is of uniform cross section and weighs 270m.
Two long, straight wires are separated by 0.12 m. The wires carry currents of 1.0 A in opposite directions, as the drawing indicates. Find the magnitude of the net magnetic field at the point A
Water drives a waterwheel (or turbine) of radius R = 3.0 m as shown in the figure. The water enters at a speed v1 = 6.5m/s, What is the torque the water applies to the waterwheel
A flashlight on the bottom of a 3.60 m deep swimming pool sends a ray upward, What angle (in air) does the emerging ray make withthe water's surface
A 827 cm^3 gold nugget and a 827 cm^3 aluminum block are immersed in water. Which object experiences the greater buoyant force
A bar magnet is oriented with its magnetic dipole moment at 53.5° to the direction of a 0.0629-T magnetic field, Find the magnitude of the magnet\'s magnetic dipole moment
A block in the shape of a rectangular solid has a cross-sectional area of 4.48 cm2 across its width, a front-to-rear length of 22.1 cm, find the magnitude of the electric field in the block
Dolphins emit ultrasonic waves with a frequency as high as 2.5 105 Hz. What is the wavelength of such a wave in seawater at 25° C
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