A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe?
Correct answer A. always an node in formed
Tip: press A, B, C or D to answer, and N for the next question.
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See allThe force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is?
Correct answer A. 1 N
When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are?
Correct answer A. 5m/s, 1m/s
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Which of the following is not an example of projectile motion?
Correct answer A. a gas filled ballon
The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be?
Correct answer B. 1
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