Recent content by ixerr

Yes they do

Homework Statement Two marbles roll off a table at the same moment. One of the marbles has a horizontal speed of 1 inch per second, and the other has a horizontal speed of 4 inches per second. a) Which marble hits the ground first? b) If the table surface is 3 feet from the ground, what...

Yes, I got the answer now :) Thank you so much for all the help!

There is no answer.. It's an online homework thing, and it keeps saying I have the incorrect answer. I am at a loss here:(

Homework Statement So I have tried to solve this problem but my answer keeps turning out to be wrong.. Someone please tell me what I am doing wrong? A 0.484 mm diameter hole is illuminated by light of wavelength 556.0 nm. What is the width (in mm) of the central maximum on a screen 3.45 m...

Yes! :) I got the answer, the velocity was 15.44 m/s. Thanks!

Homework Statement Two sinusoidal waves with equal wavelengths travel along a string in opposite directions at 7.72 m/s. The time between two successive instants when the antinodes are at a maximum height is 0.324 s. What is the wavelength (in m)? Homework Equations vt=x Also...

Homework Statement Two in-phase speakers 4.50 m apart in a plane are emitting 1690 Hz sound waves into a room where the speed of sound is 343 m/s. Consider a point that is 8.50 m in front of one of the speakers, perpendicular to the plane of the speakers. What is the path difference (in...

Alright, so by using that equation, I get: 7.036 m/s = (1.21 m) (w) w = 5.799 rad/s And by converting it, I get 55.37 rev/min Is this correct?

The relationship with angular velocity and linear velocity is v=rw right? Sooo... I use that to get w?

Actually I don't even know.

Because 1 radian = 1.1 m I think...

Okay, so to get from velocity to angular velocity, I took the velocity (7.036) and divided it by 1.1 which gave me 6.396 rad/s. To get from 6.396 rad/s to revolutions/minute, I did it through this method: Pi radians=180 Degrees (6.3/Pi)x180Degrees =360.96 degrees per second 1...

OHH I had the numbers flipped haha, thanks for the diagram, it clears things up. I suck at physics -___- I am still stuck on what I'm doing wrong now, however. Thanks for the help so far you guys!

Okay, I'm still doing something wrong, though. The answer I just put in was incorrect. What else am I doing wrong? :/