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Q. A 13.50 m long wire of mass 173 g is stretched under a tension of 269 N. A pulse is generated at one end, and 16.50 ms later a second pulse is generated at the opposite end. Where would the two pulses first meet?
Q. Consider a tungsten filament in a light bulb. After the bulb has been on for an hour, how has the resistance in filament changed (if at all)?
A helicopter is ascending vertically with a speed of 5.20m/s. at a high of 125m above the earth, a package i dropped from a window. How much time does it take for the package to reach the ground? (Hint: the package's initial speed equals helicopte..
The boom in the crane is free to pivot about point P and is supported by the cable that joins halfway along its 18 m length. the cable passes over a pulley and is anchored at the back of crane. the boom has a mass of 1700 kg, distributed evenly an..
what volume should the balloon have after being inflated. Billiard ball A of mass mA=0.400kg moving with speed vA=1.80m/s strikes ball B, initially at rest of mass mB=0.500kg. As a result of collision, ball A is deflected off at an angle of 30.0 deg..
The vertical component of this force is 128 newtons, as the horizontal component is 145 newtons. Calculate the magnitude of F.
Graphically determine the resultant of the following three vector displacements: (a) 34m, 25 degrees north of east ;(b) 48m, 33 degrees east of north; and (c) 22m, 56 degrees west of south.
Establish the initial volume of the gas . What is the magnitude of normal force that each brake pad applies to the rim.
What is the magnitude of the force that maintains circular motion acting on puck.
A 115 granite cube slides down a 35 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 235 steel cube at rest.
A student yells across a street at a concrete wall. The student hears an echo 0.500 seconds later. If the speed of sound in air is 343 m/s, what is distance from the student to the wall only.
Kelli weighs 405 N, and she is sitting on the playground swing that hangs 0.43 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. suppose that air resistance is negligible.
the magnitude of the net electric field. A lead ball is dropped into a lake from a diving board 6.40 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to the velocity with which it hit the water.
A Ferris wheel is a vertical, circular amusement ride with radius 6 m. Riders sit on seats that swivel to remain horizontal. The Ferris wheel rotates at the constant rate, going around once in 6.4 s. Consider a rider whose mass is 70 kg.
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