I don`t understand why this formula works in this case. Can you describe mathematically why does it work even though the source accelerates? That`s my problem.
No, that is not the issue.
I am having trouble understanding why this formula works even when the source is accelerating ( does not have constant velocity ).
Homework Statement
At the initial moment source and detector are located in same point and are both in rest. Source is released into free fall and detector remains in rest. Source has frequency fs=512 Hz and speed of sound is v=340 m/s . When detector detects frquency f =485 Hz , what...
Homework Statement
Four identical parallel metal plates with area $$S$$ and distance between each two $$d$$ are located in air. The external plates are connected by wire. What is the equivalent capacitance between A and B?
This is problem from Irodov.Homework Equations
$$q=UC$$[/B]The Attempt...
1. The problem statement,
Dielectric plate is placed in capacitor to the half(picture) and it can freely move. Capacitor consists of two parallel plates and is isolated. Consider two cases:
a)charges on plates are constant,
b)voltage is constant.
What happens in each case?
2. Homework...
Homework Statement
Only force acting on body is drag force $$F=kv^a$$ where k is constant, a coefficient bigger than zero and v is velocity. Body is given initial velocity u.
Find a such that body travels infinitely large distance.[/B]Homework Equations
$$F=kv^a$$
$$F=m(acceleration)$$...
Ok, I know that net torque of all forces and net force must be zero.
I draw the following forces:
1)gravitational force of beam (located in the middle of beam)
2)gravitational force of body ( exactly where the body is)
3) friction (acts horizontally?)
Then, I tried to write these forces as...