Physics, 12.12.2019 05:31, lobatospitones
Acart loaded with bricks has a total mass of 22.2 kg and is pulled at constant speed by a rope. the rope is inclined at 27.5 ◦ degrees above the horizontal and the cart moves 24 m on a horizontal floor. the coefficient of kinetic friction between ground and cart is 0.32. the acceleration of gravity is 9.8 m/s 2 . how much work is done on the cart by the rope?
Answers: 2
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 14:20, kaylaelaine18
What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus
Answers: 2
Physics, 23.06.2019 02:30, pruittjr5161
Based on its type of chemical bond, which of the following has the highest boiling point? potassium chloride ethyl alcohol water ammonia
Answers: 1
Acart loaded with bricks has a total mass of 22.2 kg and is pulled at constant speed by a rope. the...
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