Physics, 13.01.2021 17:50 cloeybrown
A cement block accidentally falls from rest from the ledge of a 81.6-m-high building. When the block is 12.8 m above the ground, a man, 1.90 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get out of the way?
Answers: 2
Physics, 21.06.2019 20:10
Current 1 of 8.4 a runs for 240 seconds and then stops. current 2 is 10.5 a. how long does current 2 have to un to deliver the same amount of charge as current 1? 88.28 192 s 2016 s 21,000 s
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 04:10
You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).
Answers: 2
A cement block accidentally falls from rest from the ledge of a 81.6-m-high building. When the block...
Mathematics, 02.10.2020 14:01
Mathematics, 02.10.2020 14:01
Computers and Technology, 02.10.2020 14:01
Mathematics, 02.10.2020 14:01
Mathematics, 02.10.2020 14:01
Mathematics, 02.10.2020 14:01
Chemistry, 02.10.2020 14:01
Mathematics, 02.10.2020 14:01
Mathematics, 02.10.2020 14:01
Biology, 02.10.2020 14:01
Social Studies, 02.10.2020 14:01