![subject](/tpl/images/cats/fizika.png)
Physics, 29.03.2021 04:00 rowdycar313p0ao5k
The concept of photons applies to which regions of the electromagnetic spectrum?
visible light only
infrared light, visible light, and UV light only
X-rays and gamma rays only
all regions of the spectrum
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 22:40
Explain vector addition, triangle method and parallelogram method
Answers: 1
![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 15:20
Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:40
Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory
Answers: 2
You know the right answer?
The concept of photons applies to which regions of the electromagnetic spectrum?
visible light only...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 16.10.2020 15:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/health.png)
Health, 16.10.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 16.10.2020 15:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 16.10.2020 15:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 16.10.2020 15:01
![question](/tpl/images/cats/en.png)
English, 16.10.2020 15:01
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 16.10.2020 15:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 16.10.2020 15:01
![question](/tpl/images/cats/fizika.png)
Physics, 16.10.2020 15:01