Physics, 17.07.2019 17:10 mariahcid904
a fire-man's pump steadily draws water from a river through a pipe with an inlet of diameter 12cm. a fireman positioned 3m above the pump inlet, holds a nozzle with an exit diameter of 3.5cm that is connected to the pump outlet by a flexible hose. if the heat transfer to the surroundings from the pump is 10% of its output, calculate the power required by the pump to deliver a flow rate of 0.015m3/s. assume that the density of water is 998kg/m3 and the gravitational acceleration is 10m/s 2.5kw]
Answers: 1
Physics, 22.06.2019 21:50
Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.
Answers: 3
Physics, 22.06.2019 22:50
Which of the following statements correctly describes a transformer?
Answers: 3
Physics, 22.06.2019 23:00
The average time that it takes for the car to travel the first 0.25m is s. the average time to travel just between 0.25 m and 0.50 m is s. given the time taken to travel the second 0.25 m section, the velocity would be m/s.
Answers: 1
a fire-man's pump steadily draws water from a river through a pipe with an inlet of diameter...
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