Physics, 21.01.2021 02:10 hannahkharel2
ركل لاعب كرة قدم الكرة بزاوية 37o فوق المستوى الأفقي وبسرعة متجهة ابتدائية مقدارها (v = 2 m/s) .ما أقصى ارتفاع تصله الكرة
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Physics, 21.06.2019 19:00
What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?
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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
Physics, 21.06.2019 23:10
Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net
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Physics, 22.06.2019 10:00
The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.
Answers: 2
ركل لاعب كرة قدم الكرة بزاوية 37o فوق المستوى الأفقي وبسرعة متجهة ابتدائية مقدارها (v = 2 m/s) .ما أ...
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