1) A Spherical Shell, Solid Sphere and Cylinder starting from the same height roll without slipping down an incline plane. They all have the same radius and same mass. Which object arrives at the bottom first? (Ispherical shell = 2/3 MR2 , Icylinder = ½ MR2 , Isphere = 2/5 MR2 )
Answers: 1
Physics, 21.06.2019 22:30, elijahdecent6070
Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter
Answers: 1
Physics, 22.06.2019 14:30, val926
When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell
Answers: 2
1) A Spherical Shell, Solid Sphere and Cylinder starting from the same height roll without slipping...
Mathematics, 03.03.2021 03:50
Mathematics, 03.03.2021 03:50
Mathematics, 03.03.2021 03:50