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A car speeds, at constant 16 m/s, past a parked police motorcycle.
Five seconds later, the police officer leaves on her motorcycle, starts her stopwatch, and accelerates at 2 m/s^2 toward the car. According to her stopwatch, how many seconds until she catches the car? show all work
A tube of air is open at only one end and has a length of 1.29 m. What is the distance between one node and the adjacent anti-node
How much work must be completed to accelerate a baton from rest to an angular speed of 7.79 rad/s about its center? Consider the baton to be a uniform rod of length 0.596m and mass 0.495kg.
A child is twirling a 0.012 kg ball on a string in a horizontal circle whose radius is .100 meters. The ball travels once around the circle in .500 seconds.
You are driving north on 107th Avenue at a speed of 31.2 mph. At what frequency do you hear the siren
The length of a string is 532cm. It is held fixed at each end. The string vibrates in seven sections; i.e. string has seven antinodes, and the string vibrates at 150 Hz. What is the wavelength.
To make a secure fit, rivets that are larger than the rivet hole are often used and the rivet is cooled (usually in dry ice) before it is placed in the hole
While the positions of these balls are fixed, ground the ball X and then break the grounding. when X and Y remain in touch, remove Z. Then divide X and Y. What are the charges (if any) on each of the balls.
Two railroad cars, each of mass 7850kg and traveling 85km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision
A 13.1 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them, Calculate the time constant of the circuit
What are the x and y components of the shell.
The men's world record for the shot put, 23.12 m, was set by Randy Barnes of the United States on May 20; 1990.If the shot was launched from 6 ft above the ground at an initial angle of 42degrees, what was its initial speed.
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 37.0kg and diameter 71 cm. The power is off for 27.0s and during this time the flywheel slows due to friction in its axle bearings...
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