Knowing that portions ac and bc of cable acb must be
equal, determine the shortest length of c...
![subject](/tpl/images/cats/User.png)
Engineering, 13.09.2019 16:30 paigejohnson6161
Knowing that portions ac and bc of cable acb must be
equal, determine the shortest length of cable that can be used to
supportthe load shown if the tension in the cable is not to
exceed870n.
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 19:20
To save energy, the air supply to a 2000 ft office has been shut off overnight and the room temperature has dropped to 40°f. in the morning, the thermostat is reset to 70°f and warm air at 120 f begins to flov in at 200ft'/min. the air is well mixed within the room, and an equal mass flow of air at room temperature (changing with time) is withdrawn through a return duct. the air pressure is nearly 1 atm everywhere. ignoring heat transfer with the surroundings and kinetic and potential energy effects, estimate how long it takes for the room temperature to reach 70°f. plot the room temperature as a function of time.
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 19:20
In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
English, 07.08.2021 14:00
![question](/tpl/images/cats/en.png)
English, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/fr.png)
French, 07.08.2021 14:00
![question](/tpl/images/cats/fizika.png)
Physics, 07.08.2021 14:00
![question](/tpl/images/cats/fizika.png)
Physics, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.08.2021 14:00
![question](/tpl/images/cats/mat.png)