Weeks later I'm thinking I am incorrect on my assumption. It seems that length contraction is an issue I didn't think about when viewing the lightning flashes
(I search on lightning in this link and read the example which is the same as the one I was attempting to answer...
Yes "light from both flashes are all at the same location at the same time". We know that observer (B) will see the two light flashes at the same time (from (B)'s frame of reference).
TIA
I read the post entitled "Thought experiment in relativity of simultaneity". It's pretty close to my question but not necessarily needed to answer my questions.
Situation: On observer (A) is "at rest" and another observer (B) is in a reference frame moving with respect to observer (A)...
So R2 is 12.5 times the radius of the rubber wheel. This means that the angular acceleration of the second wheel is 1/12.5 the given angular acceleration of the rubber wheel? This also means the torque on the second wheel is 12.5 times the torque on the rubber wheel?
Does this sound...
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 2.0cm and accelerates at the rate of 7.2rad/s^2 and it is in contact with the pottery wheel (radius 25.0cm) without slipping. Calculate:
a) the...
We just got into circular motion so being a circular motion newbie I can only give you a newbie answer. My interpretation of perfectly banked means there is a force pushing the car towards the center of the track. I'm not sure how to use that explanation (assuming it is correct) into an...
Hello - I'm having doubts about this approach. Thanks in advance!
If a curve with a radius 88m is perfectly banked for a car traveling 75 km/h what must be the coefficient of static friction for a car not to skid when traveling at 95 km/h?
95km/h = 26.4m/s
75km/h = 20.8 m/s
Fr=ma...
A bicyclist coasts down a 7.0 degree hill at a steady speed of 5.0 m/s. Assuming a total mass of 75kg (bicycle plus rider), what must be the cyclist's power output to climb the same hill at the same speed?
I get 90N * 5.0 m/s = 450W
The book says 9.0 * 10^2 W
It looks like I'm...
Ok. I now understand that it should in should be positive. I was contradicting my initial thought. It's two vectors. Thanks for the hints.
Does my approach look correct so far?
Thanks for you help too!
So if I draw two vectors:
vector 1
y= 620 sin 35 = 507.9
x= 620 cos 35 = 355.6
X Y
355.6 507.9
0 -95
355.6 412.9
Determine theta by using tan-1? Am I any closer to understanding it? I get 49 degrees and that isn't correct.
I'm looking for a little help on this one. I've been looking at it for hours.
An airplane whose air speed is 620km/h is supposed to fly in a straight path 35.0 degrees north to east. But a steady 95 km/h wind is blowing from the north. In what direction should the plane head?
I know...
I broke down d1 and d2 as distance 1 and distance 2. It looks like I didn't need to do that.
I think you assumption is correct. My head is still spinning a bit on x(t)= 1.5+ v0t- 4.9t2 . I'm just wondering why it wasn't broken into two parts (the first part being the upward motion of the...
Suppose you adjust your garden hose nozzle for a hard stream of water. You point the nozzle vertically upward at a height of 1.5m above the ground. When you quickly move away from the vertical you hear the water striking the ground next to you for another 2.0s. What is the water speed as it...