![subject](/tpl/images/cats/fizika.png)
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
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
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 04:10
An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 05:30
What are similarities and differences of reflection, refraction, diffraction and absorption?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 09:40
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.
Answers: 1
You know the right answer?
a surveyor uses a steel measuring tape that is exactly 50.000 m long at a temperature of 20°C. what...
Questions
![question](/tpl/images/cats/himiya.png)
Chemistry, 07.07.2019 10:00
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 07.07.2019 10:00
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.07.2019 10:00
![question](/tpl/images/cats/mat.png)
Mathematics, 07.07.2019 10:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.07.2019 10:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
English, 07.07.2019 10:10
![question](/tpl/images/cats/mat.png)
Mathematics, 07.07.2019 10:10