calculate the new pressure of the sample
A sample of a gas in a cyclinder or piston apparatus occupies 38.6 mL at 1.27 atm and 15.7°C. If the temperature changes to 44.7°C and the volume of the sample is increased to 74.8 mL, calculate the new pressure (in atm) of the sample?
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The arm is outstretched having a mass of 4.2 kg. The hand at the end of arm holds a 6 kg mass. The arm is increased 15 degrees above the horizontal. i) Determine the torque about the shoulder due to the weights of the arm and 6 kg mass?
A normal breath takes in about 1.0L of air. Assume air has anaverage molar mass of 28.8 g and its density is .97g/mol. How many molecules of air do you take in each breath?]
An object of 2.7 kg is moving in a plane, having its x and y coordinates given by x = 3t^2 - 2 and y = 2t^3 + 2, where x and y are in meters and t is in seconds. Determine the magnitude of the total force acting on the object at t = 2.6 s.
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He is going 11m/s at that instant and the rolling friction of his rubber tires is not negligible. Does he stay alive? The back of the book consists of the coefficient of rolling friction for rubber as .02
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Write down the balanced equation for the combustion of solid acetylsalicylic acid to the carbon dioxide gas and water where aspirin is the analgesic acetylsalicylic acid, C9H8O4.
How much to invest when you are twenty years old at 6% compounded monthly to end up with million dollars by age fifty? Round answer to the nearest dollar.
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