Recent content by motherlovebone

Okay, I need some help yet again. Our teacher is giving us no hints on the "mystery problem" on our test tomorrow. "A boat sends a sonar down to find a submarine underwater. The boat estimates the velocity of sound under the water to be 1500 m/s. Howeer, they are wrong about that velocity...

Okay, I got this worksheet today and my teacher didn't explain to me what shock cones were. So here's the problems, and what I did so far to work them out. "An aircraft makes a supersonic pass 382 m over an observer. the shock wave pounds the observer after the plane is 405 m past her...

I don't understand that though . . . we are doing the unit on sound, so how would the speed of light be applicable?

My teacher gave us a worksheet to prepare for the test tomorrow, and we never discussed anything about problems 10 to 14. I'm not asking for answers . . . just clarifications. 1.) What is a shock cone, anyway? 2.) What does Mach II, Mach III, etc. mean? 3.) Are there certain equations that...

Okay, I don't need an answer . . . I just need to know how I would go about getting an answer. Here is the question, exactly worded as on my worksheet: "What is the up-doppler for a 600.0 nanometer laser scanning an innocent, law-abiding, safe-driving, tax-paying, completely innocent...

I have been stumped on these problems for about a half an hour now, and I need some big help on them! Problem 1: "A sound wave traveling at 343 m/s is emitted by the foghorn of a tugboat. An echo is heard 2.60 s later. How far away is the reflecting object?" I guessed that 2.60 s was the...

But on the sheet, it has answer blanks for x', y', z', x, y, z. So I'm guessing he wants all the values. And we learned nothing about kinematic equations.

No. I mean that I don't understand a thing he says. I went in for help on this problem after school. He threw the two equations x=x'+vt and x'=x-vt at me, told me to figure it out, and then I left. I don't get how I'm supposed to solve this problem without having t or either x value.

But I can't use those equations because all I have is the two velocities. I don't have t, don't have x or x', and I don't know which v to use.

Here is the problem: "A passenger in a convertible throws a ball up into the air. The car is going 35.0 m/s. The upward velocity of the ball is 8.00 m/s. Give the equations which specify the ball position at any given time with respect to the passenger (prime values) and respect to an observer...

I have a teacher who is lacking in the explanation department, so I figured I could find an answer here. We are doing relativity in class, and I have a quick question on it. The problem is, "A passenger in a convertible throws a ball up into the air. the car is going 35 m/s. The upward...