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An object is released from rest and falls in free fall motion. The speed v of the object after it has fallen a distance y is given by v2 = 2gy. In an experiment, v and y are measured and the measured values are used to calculate g. If the percent uncertainty in the measured value of v is 5.39% and the percent uncertainty in the measured value of y is 5.00%, what is the percent uncertainty in the calculated value of g?
A sailor strikes the side of his ship just below the surface of the sea. He hears echo of the wave reflected from the ocean floor directly below 9 s later. How deep is the ocean at this point.
In a women's 100-m race, accelerating uniformly, Laura takes 1.81 s and Healan 3.06 s to attain their maximum speeds, which they each maintain for the rest of the race.
In a certain RL time constant circuit, it takes 135 msec for the current to reach maximum after the switch is closed.
What is the smallest probable displacement of shopper.
A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley. Assume the rope and pulley are massless and there is no friction in the pulley.
A particle leaves the origin with an initial velocity of 4.20 m/s in the x direction, and moves with constant acceleration ax = -1.80 m/s2 and ay = 2.30 m/s2. a-How far does the particle move in the x direction before turning around? b-What is the..
You're driving down the highway late one night at 17 {rm m}/{rm s} when a deer steps onto the road 45 {rm m} in front of you. Your reaction time before stepping on the brakes is 0.50 {rm s} and the maximum deceleration of your car is 12 {rm m/s^2}..
A parallel-plate capacitor has an area of 2.0cm^2, and the plates are separated by 2mm.
Three equal point charges, each with charge 1.50, are placed at the vertices of an equilateral triangle whose sides are of length 0.550. What is the electric potential energy of the system? (Take as zero the potential energy of the three charges w..
If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find out the final speed of the truck.
The rope makes an angle of 70.0 degrees with respect to the vertical as shown. Illustrate what is the tangential speed of the ball?
Relationships between wavelength, frequency and speed.
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