![subject](/tpl/images/cats/fizika.png)
Physics, 16.01.2020 23:31 Homepage10
Asevere thunderstorm dumped 2.4 in of rain in 30 min on a town of area 29 km2. what mass of water fell on the town? one cubic meter of water has a mass of 103 kg.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 03:50
A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c
Answers: 3
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 11:30
(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?
Answers: 3
You know the right answer?
Asevere thunderstorm dumped 2.4 in of rain in 30 min on a town of area 29 km2. what mass of water fe...
Questions
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.11.2020 20:00
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.11.2020 20:00
![question](/tpl/images/cats/en.png)
English, 10.11.2020 20:00
![question](/tpl/images/cats/fr.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.11.2020 20:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 10.11.2020 20:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 10.11.2020 20:00
![question](/tpl/images/cats/biologiya.png)
Biology, 10.11.2020 20:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.11.2020 20:00
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.11.2020 20:00
![question](/tpl/images/cats/mat.png)