Neha swims in a 90 m long pool. She covers 180 m in
one minute by swimming from one end to the...
![subject](/tpl/images/cats/fizika.png)
Physics, 25.04.2020 11:44 alondra314
Neha swims in a 90 m long pool. She covers 180 m in
one minute by swimming from one end to the other
and back along the same straight path. Find the
average speed and average velocity of Neha.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/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
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 05:30
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:00
Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 02:30
Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.11.2019 20:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/istoriya.png)
History, 21.11.2019 20:31
![question](/tpl/images/cats/en.png)
English, 21.11.2019 20:31
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2019 20:31
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2019 20:31
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2019 20:31
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2019 20:31
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2019 20:31
![question](/tpl/images/cats/en.png)
English, 21.11.2019 20:31
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
Physics, 21.11.2019 20:31
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2019 20:31
![question](/tpl/images/cats/istoriya.png)
History, 21.11.2019 20:31