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A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0m of the race. What is the average acceleration of this sprinter, and how long does it take her to reach that speed?
A violinist is tuning her instrument to concert A (440 Hz ). She plays the note while listening to an electronically generated tone of exactly that frequency, What was the frequency of her violin when she heard the 4.00 beat
A kayaker needs to paddle north across a 100m wide harbor. The tide is going out, creating a tidal current that flows east at 2 m/s. The kayaker can paddle with a speed of 3 m/s.
A sprinkler mounted on the ground send out a jet of water at 30 degrees angle to horizontal. How far does the water travel before it hits the ground
A nitrogen molecule is initially in a large volume of calm air at STP. How many collisions does the nitrogen molecule suffer in 10 minutes
A pi meson of mass mπ move with speed uin the positive y direction in frame S with parametersβu = u/c and γu = (1 - βu2)-1/2. Compute the combined energy of the two photons in S'
In a cathode-ray tube, a beam of electrons is projected horizontally with a speed of 1.0x10^9 cm/s into a region between a pair of horizontal plates 2.00 cm long.
An elevator can lift a 107 N aircraft a distance of 26 meters in 11 s. What is the power output of the elevator
An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2. What is her average speed for the round trip
Suppose it was launched form a launch pad in a space vacuum. Would it work? Illustrate what changes would we observe? Explain
If a particle undergoes SHM with amplitude.21 m, what is the total distance it travels in one period
The lengths of the three telescopes are LA = 456 mm, LB = 640 mm, and LC = 787 mm. The focal length of the eyepieces is 3.00 mm
Two cylinders of the same material and length, are held horizontally one atop the other with space in between so they are not touching.. Viewed from the end they look like two circles on top of each other with space between(looks like a lower case..
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