subject
Physics, 26.06.2019 03:50 Davon21

High speed cameras are used to photograph events which take place too quickly to be seen by the human eye. one such high speed camera is composed of a rotating film drum, a rotating shutter and some miscellaneous optics. the film is fastened along the outside of the drum (along its entire circumference) and the drum is driven by high pressure gas. you desire to photograph the dynamics of a bumblebee in flight and estimate that its wings flap somewhere about 10,000 times a second. the radius of the film drum is r = 0.501 m and you've loaded it with 35mm film. 1) how many photographs will fit along the circumference of the drum? (assume 35mm length is one photo) number = 2) you desire to take the photographs at a frequency of 20,000 hz. what is the angular frequency of the shutter? (note: shutter has one hole in it, and angular frequency is the same as angular velocity) ? = rad/s 3) what must the angular frequency of the film drum be? ? = rad/s 4) when the drum has taken its pictures, the gas is turned off and the drum slows down uniformly, finally setting to a standstill after 2 minutes. what was the angular acceleration of the film drum after turning off the gas? ? = rad/s2 5) how many times does the film drum rotate after the gas is turned off and before coming to rest? give your answers in revolutions.

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 05:00
Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?
Answers: 2
question
Physics, 22.06.2019 18:20
An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped
Answers: 2
question
Physics, 22.06.2019 23:00
Which scientist was the first to propose the heliocentric model of the universe? a. aristotle b. isaac newton c. galileo galilei d. nicolaus copernicus
Answers: 1
question
Physics, 23.06.2019 00:00
Abus travels 280km south along a straight path with an average velocity of 88km/h to the south. the bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last?
Answers: 1
You know the right answer?
High speed cameras are used to photograph events which take place too quickly to be seen by the huma...
Questions
question
English, 17.10.2021 16:40
question
Geography, 17.10.2021 16:40
question
Mathematics, 17.10.2021 16:40
question
Mathematics, 17.10.2021 16:40
question
English, 17.10.2021 16:40
question
Chemistry, 17.10.2021 16:40
question
English, 17.10.2021 16:40
Questions on the website: 13722362