![subject](/tpl/images/cats/fizika.png)
Physics, 08.11.2020 19:40 jones03riley
Use Newton’s first law to explain why a book on a desk does not move
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 23:00
We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 04:20
Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:00
Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 17:00
Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.
Answers: 3
You know the right answer?
Use Newton’s first law to explain why a book on a desk does not move...
Questions
![question](/tpl/images/cats/geografiya.png)
Geography, 05.02.2020 01:47
![question](/tpl/images/cats/himiya.png)
Chemistry, 05.02.2020 01:47
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:47
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:47
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 05.02.2020 01:47
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:47
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/istoriya.png)
History, 05.02.2020 01:47
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:47
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:47
![question](/tpl/images/cats/istoriya.png)
History, 05.02.2020 01:47
![question](/tpl/images/cats/istoriya.png)
History, 05.02.2020 01:47
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 05.02.2020 01:48
![question](/tpl/images/cats/es.png)
Spanish, 05.02.2020 01:48
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:48
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:48
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2020 01:48