Answers: 2
Physics, 22.06.2019 00:30
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
Physics, 22.06.2019 19:30
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.
Answers: 1
Physics, 22.06.2019 23:30
Macy always thought there were only a few hair colors blonde brown and black however when she actually began looking around she saw varying shades of these hair color what is a possible reason for so many different hair colors
Answers: 1
The wave speed is 3 x 10^8 m/s, and the frequency is 4 x 10^8 Hz. Calculate its wavelength....
Chemistry, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00
Mathematics, 29.06.2019 13:00