Physics, 23.10.2019 07:00 deepunalli300p3ur3i
Three disks are spinning independently on the same axle without friction. their respective rotational inertias and angular speeds are i,ω (clockwise); 2i,3ω (counterclockwise); and 4i,ω/2 (clockwise). the disks then slide together and stick together, forming one piece with a single angular velocity. what will be the direction and the rate of rotation ωnet of the single piece? express your answer in terms of one or both of the variables i and ω and appropriate constants. use a minus sign for clockwise rotation.
Answers: 3
Physics, 22.06.2019 10:00
(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
Answers: 3
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Physics, 22.06.2019 14:00
Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.
Answers: 1
Three disks are spinning independently on the same axle without friction. their respective rotationa...
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