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A 63.7-kg canoeist stands in the middle of her canoe. The canoe is 3.9 m long, and the end that is closest to land is 2.5 m from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe. Suppose the canoeist is 3.4 m from shore when she reaches the end of her canoe. What is the canoe's mass?
The intensity of the sound wave from a jet airplane as it is taking off is 86 W/m2 at a distance of 3.3 m. What is the intensity of the sound wave that reaches the ears of a person standing at a distance of 120 m from the runway
Find the slit width. compute the coefficient of kinetic friction between the slide and the child.
Two sound sources radiating in phase at a frequency of 485 Hz interfere such that maxima are heard at angles of 0 and 22° from a line perpendicular to that joining the two sources. Find out the separation between the two sources.
A 0.361 T magnetic field in a mass spectrometer causes an isotope of sodium to move in a circular path with a radius of 0.077m. what is the isotope's mass
A 80kg football player is moving at 5.7m/s to the east; a 140kg player is moving at 5.4m/s to the west. While they are still in the air, how fast is the pair moving
The coefficient of performance of a refrigerator is 4.70. The compressor uses 20.0J of energy per cycle. How much heat energy is exhausted per cycle
In a marathon race Chad is out in front, running due north at a speed of 3.88 m/s. John is 97 m behind him, How long does it take for John to pass Chad
The velocity of the bal
q1. a skier moving at 4.50 ms encounters a long rough horizontal patch of snow having coefficient of kinetic friction
A pendulum bob of length L has its motion interrupted by the peg perpendicularly beneath the support. The bob is released when the string is horizontal. Find out the minimum value for y in order for the bob to swing in a complete circle. State thi..
An energy of 28.0 eV is required to ionize a molecule of the gas inside a Geiger tube, What maximum number of ion pairs can it create
A step-down transformer is used for recharging the batteries of portable devices. Find the power delivered to the CD player
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