Physics, 04.11.2021 01:30 kaziyahf2006
A substance heats and cools quickly. What do you know about this substance ?
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 05:00
Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?
Answers: 3
Physics, 22.06.2019 16:00
What is friction? how does it affect the motion of an object?
Answers: 1
A substance heats and cools quickly. What do you know about this substance ?...
Health, 29.08.2019 11:30
Social Studies, 29.08.2019 11:30
Advanced Placement (AP), 29.08.2019 11:30
Biology, 29.08.2019 11:30
Mathematics, 29.08.2019 11:30
Mathematics, 29.08.2019 11:30
Mathematics, 29.08.2019 11:30
Health, 29.08.2019 11:30
Biology, 29.08.2019 11:30
Biology, 29.08.2019 11:30
Biology, 29.08.2019 11:30