Physics, 13.01.2021 17:30 bayleegreen
A 4600 kg helicopter accelerates upward at 2.0 m/s². Determine the lift force exerted on the propellers by the air. Make a quantitative force diagram. Write a net force equation for the axis along which forces are not balanced.
Answers: 2
Physics, 21.06.2019 22:50
Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.
Answers: 2
Physics, 22.06.2019 01:00
An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75
Answers: 2
Physics, 22.06.2019 04:40
Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure
Answers: 3
Physics, 22.06.2019 10:30
Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
A 4600 kg helicopter accelerates upward at 2.0 m/s². Determine the lift force exerted on the propell...
History, 21.10.2020 21:01
Mathematics, 21.10.2020 21:01
English, 21.10.2020 21:01
Physics, 21.10.2020 21:01
Mathematics, 21.10.2020 21:01
Arts, 21.10.2020 21:01
Mathematics, 21.10.2020 21:01
Arts, 21.10.2020 21:01