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A 5.0 m-long rope hangs vertically from a tree right at the edge of a ravine. A woman wants to utilize the rope to swing to the other side of the ravine. She runs as fast as she can, grabs the rope, and swings out over the ravine. When she is directly over the far edge of the ravine, she is 1m higher than when she started.
How fast does she have to be running when she grabs the rope to build it across the ravine?
A 50,000 kg locomotive is traveling at 50.0m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
Two balls, of masses mA = 40 g and mB =60g, are suspended each on a string of 30 cm long side byside, what is the velocity of the lighter ball before impactl
a physics teacher performing an outdoor demonstration suddenly falls from rest off a high cliff and simultaneously
The second-order dark fringe in a single-slit diffraction pattern is 1.40 mm from the center of the central maximum. calculate the wavelength of the incident light
1. Chameleons use their tongues to catch their prey. Their tongues typically accelerate at 250 m/s2 for up to 20 ms, then they travel at constant speed for a further 30 ms. During this total duration, of acceleration plus constant motion, of 5..
Four equal charges, q=4.35C, of mass m 4.35kg are at the corner of a square of side L=0.0237m. If an equivalent charge of the same mass is placed at the origin, what is its speed at any time after it is released
two train whistles have identical frequencies of 160 hz. when one train is at rest in the station and the other is
A circus clown wiwith a mass 54 kg is launched vertically from a springloaded cannon using a spring with a spring constant of 3.5*10^3 N/m. What is maximum speed of clown
although the evidence is weak there has been concern in recent years over possible health effects from the magnetic
When one person shouts at a football game, the sound intensity level at the center of the field is 68.4 dB. When all the people shout together, how many people are at the game
A 3.00-kg block starts from rest at the top of a 27.0° incline and slides 2.00 m down the incline in 1.20 s. Find the frictional force acting on the block
a block with a mass m and charge q is placed in an electric field e ai bj where a and b are constants. if the block is
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