Physics, 30.12.2019 00:31 shellxavier1
The use of sound waves scientists find out how deep parts of the ocean are. the scientists do this by sending a sound wave to the floor of the ocean and recording the time it takes to return to a machine. what did the inventor of this machine need to know while developing the machine?
Answers: 3
Physics, 21.06.2019 20:50
What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition
Answers: 1
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, 23.06.2019 03:00
Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)
Answers: 2
Physics, 23.06.2019 11:00
A40 kilogram skier starts at the top of a 12 meter heigh slope. at the bottom she is traveling 10 meters per second how much does she lose to friction? a. 4,704 joules b. 2,704 joules. c.2,000 joules d. she doesn’t lose any because mechanical energy is conserved. 35
Answers: 1
The use of sound waves scientists find out how deep parts of the ocean are. the scientists do this...
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Physics, 10.09.2020 09:01
History, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01
Mathematics, 10.09.2020 09:01