Physics, 03.07.2019 22:10 dhgdzfbzdf6765
The shortest air column inside a resonator vibrates with a frequency of 250 hz, if the next harmonic is 750 hz, and the speed of sound is 343 m/s.
a. is this resonator closed at one end or open at both ends? explain.
b. find the length of the resonator.
Answers: 2
Physics, 22.06.2019 03:00
Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx
Answers: 1
Physics, 22.06.2019 05:00
Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?
Answers: 1
Physics, 22.06.2019 19:30
Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).
Answers: 3
Physics, 23.06.2019 00:20
You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?
Answers: 3
The shortest air column inside a resonator vibrates with a frequency of 250 hz, if the next harmonic...
Mathematics, 02.09.2021 03:10
English, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
French, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10
Social Studies, 02.09.2021 03:10
Mathematics, 02.09.2021 03:10