Recent content by owura143

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    How Do You Calculate Moles of Water Vapor in Air Using Ideal Gas Law?

    The relative humidity is 55% on a day when the temperature is 30.0°C. Using the graph below, determine the number of moles of water vapor per cubic meter of air. on the graph, Vapor pressure of water is on the y-axis and temperature on the x-axis 30C cordinates with 4200 Pa of water vapor...
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    How Is Angular Acceleration Calculated for a Rotating Door?

    no. I don't
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    How Much Energy Does a Human Lose Through Radiation in a Cool Room?

    Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 25°C. The skin area of the individual is 2.0 m2 a) Assuming the emissivity is 0.80, find the net loss of radiant power from the body b) Determine the number of food...
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    How Does Human Skin Radiate Heat in a Cooler Room?

    [b]Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 25°C. The skin area of the individual is 2.0 m2 a) Assuming the emissivity is 0.80, find the net loss of radiant power from the body b) Determine the number of food...
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    Calculate Energy & Cost for 7 Hour Oven Use

    I solved it
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    Calculate Energy & Cost for 7 Hour Oven Use

    The temperature in an electric oven is 165°C. The temperature at the outer surface in the kitchen is 55°C. The oven (surface area = 1.6 m2) is insulated with material that has a thickness of 0.023 m and a thermal conductivity of 0.045 J/(sm°C). a) How much energy is used to operate the oven...
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    How Much Coffee Spills From a Heated Beaker?

    water has no coefficient of linera expansion
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    How Much Coffee Spills From a Heated Beaker?

    The unit is 1/ degrees celsius. i don't know the right answer
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    How Much Coffee Spills From a Heated Beaker?

    Urgent help need.Please ! Heat question [b]1. During an all-night cram session, a student heats up a one-half liter (0.50 10-3 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 20°C, and the beaker is filled to the brim. A short time later when the student returns, the...
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    How Is Angular Acceleration Calculated for a Rotating Door?

    How do I do that? Where do i start? please hep
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    How Is Angular Acceleration Calculated for a Rotating Door?

    [b]1. rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 95 kg. A person pushes on the outer edge of one pane with a force of F = 80 N that is directed perpendicular to the pane. Determine the magnitude of the door's angular acceleration...
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    Solve for r in Circular Motion Problem - Urgent Help Needed

    Urgent help needed, please! Circular motion Suppose the surface (radius = r) of the space station is rotating at 42.7 m/s. What must be the value of r for the astronauts to weigh one-half of their Earth weight? My soln: Let // represent square root V = // (GMe/r) I divided Me by 2...