Then the value of m is (these two vectors are in
same direction)
a) (1/2) b) (- ½) c)...
Physics, 03.03.2021 14:00 Sarahinator04
Then the value of m is (these two vectors are in
same direction)
a) (1/2) b) (- ½) c) (3/2) d) (-3/2)
Answers: 2
Physics, 22.06.2019 01:20
An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 03:30
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
Physics, 22.06.2019 10:30
In science and physics what is the standard unit of measure for speed?
Answers: 1
Physics, 22.06.2019 16:50
Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.
Answers: 2
Geography, 12.07.2019 14:50
Geography, 12.07.2019 14:50
Social Studies, 12.07.2019 14:50
Business, 12.07.2019 14:50
Mathematics, 12.07.2019 14:50
English, 12.07.2019 14:50
Biology, 12.07.2019 14:50
Physics, 12.07.2019 14:50
Mathematics, 12.07.2019 14:50
Mathematics, 12.07.2019 14:50
Spanish, 12.07.2019 14:50