ok, I am still a little confused but things are a bit clearer :)
Actually I made a mistake anyway, the air horn is actually stuck into the ground, so it doesn't move, just the guy running towards the "great wall of china". I should learn to read!
So we have a setup like
(((( horn ))))...
Hi, I am a little confused about some aspects of sound waves. I was hoping to just check to see if I am on the right track.
I have a problem where a guy is moving towards the great wall of china, with a air horn, emitting a constant frequency sound of 500Hz. The sounds is going to hit the...
Looks like you are making progress, but there are a couple of things. by the way this is why they like equations :)
First you must find the acceleration of the car. I am not sure what you are doing for that but the basic equation is
v2 = v1+at
and v1=0 in this case, and you know the...
I could be wrong but you just need to use the same formula again:
v2^2 = v1^2 + 2a(delta(d)) <---- a)
You know d, v2 is 0, and your given acceleration from before
There is only one unknown left, V1.
I am pretty new to the forum, but I think you actually have to provide some sort of reasonable attempt to the problem before people will normally reply to you.
as a hint here you have enough information to determine the car's acceleration, you know its mass you you can compute the maximum...
Hi everyone, I was hoping to ask a thermodynamics problem, specificially one about heat pumps and coeffiecent of performance. I am wondering if I am missing something.
I am given that heat pump is heat a building. Inside temperature is to be maintained at 22 degree celcius, outside is...
Hi! I have been racking my brain trying to solve the relationship between the effect of temperature increase and the change in period of a pendulum. I am suppose to prove a relationship, and am given that the relationship is
delta(P) = 1/2*alpha*Pinitial
where alpha is the coefficient of...