Posted by Toy on Tuesday, October 14, 2008 at 3:21am.
Since gh/c^2 is dimensionless, it must be the RELATIVE change is wavelength (or frequency). g is the acceleration of gravity at the earth's surface. Plug in the numbers and you get
(delta f)/f = 9.8 m/s^2*300m/(9*10^16) m^2/s^2 = 3.27*10^-14.
The red-shifted frequency will be that times 10^11 Hz, or 3.27*10^-3 Hz. Use that to answer the other questions.
A hydraulic lift office chair has it's seat attached to a piston with an area of 11.2cm squared. The chair is raised by exerting force on another piston, with an area of 4.12 cm squared. If a person sitting on the chair exerts a downward force of 219 N, what force needs to be exerted on the small piston to lift the seat?
Please use "Post a New Question" for new questions.
Questions about hydraulic lifts can always be solved by using the fact the
(force)/(piston area0 is a constant for all pistons in contact with the same fluid
where did u get 9*10^16 and how can i answer the questions??? im still confused.. sorry
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