Physics, 26.10.2020 08:40 daisyperez1
How does the MA of a 6-m ramp compare with the MA of a 4-m ramp if both are used to load crates onto trucks that have cargo areas that are 1 m off the ground?
Answers: 2
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, 22.06.2019 00:30
What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds
Answers: 1
Physics, 22.06.2019 04:30
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 11:30
Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?
Answers: 1
How does the MA of a 6-m ramp compare with the MA of a 4-m ramp if both are used
to load crates ont...
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