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Francesca, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from JFK Airport (Fig 4-58). She notices that the string make angle of 25o with respect to the vertical as the aircraft accelerates for takeoff, which takes about 18s. Estimate the takeoff speed of the aircraft.
A long, narrow, rectangular loop of wire is moving toward the bottom of the page with a speed of 0.020 m/s. find the magnitude of the change in the magnetic flux
A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin(2?t), Find the angular frequency of the driven system
a 20-cm-long nichrome wire is connected across the terminals of a 1.5 v battery.a. what is the electric field inside
Washington D.C is roughly 3000 miles from San Francisco. When it is 8:00 a.m. in San Francisco, it is 11:00 a.m. in Washington D.C. Using this information, find the rotational speed of the surface of Earth
A falling stone takes ?t = 0.26s to travel past a window2.2 m tall, From what height above the top of the window did the stone fall
An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. What is the horizontal force acting on the puck
A spaceship negotiates a circular turn of radius 2680 km at a speed of 30540 km/h. What is the magnitude of theangular velocity? What is the magnitude of the radial acceleration?
The masses slide down their respective hills, colliding on a frictionless, horizontal surface. the collision is elastic. Find the height that each makes it back up their own hills after the collision.
you are piloting a small plane that can maintain an air speed of 136.5 kt knots or nautical miles per hour and you want
A soprano saxophone is an open pipe. If all keys are closed, it is approximately 65 cm long. Using 343 m/s as the speed of sound, find the lowest frequency that can be played on the instrument.
Two very small spheres are initially neutral and separated by a distance of 0.60 m. What is the magnitude of the electrostatic force that acts on each sphere
a rock is thrown downward into a well that is 8.85 m deep. if the splash is heard 1.20 seconds later, what was the initial speed of the rock
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