Answers: 1
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 12:00
Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?
Answers: 1
Physics, 22.06.2019 14:40
You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.
Answers: 2
Physics, 22.06.2019 15:50
The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?
Answers: 2
When conducting this experiment, some procedures call for heating the substance several times and re...
Mathematics, 01.09.2020 14:01
Mathematics, 01.09.2020 14:01
English, 01.09.2020 14:01
Spanish, 01.09.2020 14:01
Medicine, 01.09.2020 14:01
Mathematics, 01.09.2020 14:01
Geography, 01.09.2020 14:01
Mathematics, 01.09.2020 14:01
Health, 01.09.2020 14:01
Mathematics, 01.09.2020 14:01
Geography, 01.09.2020 14:01
Spanish, 01.09.2020 14:01
English, 01.09.2020 14:01