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A soccer player kicks a rock horizontally off a 39.0-m-high cliff into a pool of water. If the player hears the sound of the splash 2.97 s later, what was the initial speed given to the rock? Assume the speed of sound in air is 343 m/s.
A unifrom rod of length L = 2.00 and mass m = 1.10 kg is attached to a frictionless pivot through one of its ends. Find the linear speed of the tip of the rodas it passes through the vertical
What is your displacement after running 2 {rm km} on Strawberry Fields, 1.6 {rm km} on Penny Lane, and 4.8 {rm km} on Abbey Road.
What is the distance, measured along the screen, between this bright fringe and bright fringe corresponding to m = 3.
A person undergoing radiation treatment for a cancerous growth receives an absorbed dose of 1.8 Gy. All the radiation is absorbed by the gowth. Determine the rise in temperature
A racecar approaches the start/finish line of a race track with a speed of 100 m/s. A speaker (called the ground speaker) next to the start/finish line emits a tone of frequency 256 Hz (middle C on a piano). A second speaker on the racecar (called..
A string on a guitar is stretched between two points 35.0 cm apart with a tension of 65.0 N. The velocity of wave propagation on the string is
A solar cell generates a potential difference of 0.95 V when a 380 ? external resistance is connected across it, What is the internal resistance of the solar cell
In this simulation you can choose between seven possible circuits by clicking on one of the small circuit diagrams shown at the upper right. What is the maximum possible total current that can be obtained in this simulation
An unknown gas has a density of 1.584 kg/m3 at STP. (STP, for standard temperature and pressure, What is the gram molecular mass
A sled weighs 100 N. It is held in place on a frictionless 20 degree slope by a rope attached to a stake at the top of the slope; What is the normal force acting on the sled
At a certain time a model car's speed was 24 m/s in the positive x direction, What was the average acceleration of the car during this 8.0 s interval
A 2.40g bullet embeds itself in a 1.50kg block, which is attached to a spring of force constant 770 N/m. Find the time for the bullet-block system to come to rest
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