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Results tagged with homework-and-exercises
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user 119103
Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.
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1
answer
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Considering velocity-distance graph [closed]
A car is travelling at constant velocity. Its brakes are then applied, causing uniform deceleration. Which graph shows the variation with distance s of the velocity v of the car?
The solution is A, …
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1
vote
2
answers
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Finding minimum angular velocity of an object attached to two inextensible strings
Could you please explain question (ii) please? (I have no problem with (i))
One end of a light inextensible string of length 0.5m is attached to a fixed point A. The other end of the string is attach …
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-1
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1
answer
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Which arrangement of pipe and sources can create a standing wave?
A loudspeaker emitting sound of frequency f is placed at the open end of a pipe of length l which
is closed at the other end. A standing wave is set up in the pipe.
A series of pipes are then set up …
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0
votes
2
answers
4k
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Calculating energy released by using binding energy VS mass difference
Please take a look at (C). I have no prob with (a) and (b) but some values are needed from (a) and (b) in order to perform a calculation in (C).
For (C), I wonder why I got different answers from two …
- 37
1
vote
1
answer
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Which one would has a greater magnitude, the viscous drag or the weight of the bubble?
An air bubble in a tank of water is rising with constant velocity. The forces acting on the bubble are X, Y and Z as shown.
What describes the three forces?
A) Z is the viscous dra …
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