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A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 25.2 m/s A 1.0-kg stone is thrown from the basket with an initial velocity of 11.7 m/s perpendicular to the path of the descending balloon, as measured relative to a person at rest in the basket. The person in the basket sees the stone hit the ground 6.70 s after being thrown. Assume that the balloon continues its downward descent with the same constant speed of 25.2 m/s .How high was the balloon when the rock was thrown out?
How high is the balloon when the rock hits the ground?
At the instant the rock hits the ground, how far is it from the basket?
Just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest in the basket.
just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest on the ground.
Two known charges, -10.9 µC and 46.3 µC, and an unknown charge arelocated on the x axis. Thecharge -10.9 µC is at the origin, and thecharge 46.3 µC isat x = 14.5 cm.
A generator supplies 130 V to a transformer's primary coil, which has 64 turns. If the secondary coil has 680 turns, what is the secondary voltage?
A generator can be made using the component of Earth's magnetic field that is parallel to Earth's surface. Compute the maximum emf induced in the coil by Earth magnetic field
Consider the H beta line of the Balmer series for hydrogen. Calculate the photon energy for this H beta line
A laser beam whose wavelength is 681 nm falls on a barrier containing a pair of very narrow slits. A screen is located 2.65 m from the slits. What is the separation between the centers of the two slits
A circular saw blade 0.200 m in diameter starts from rest. Find the angular acceleration and the angle through which the blade has turned in this time
a wheel that is rotating at 33.3 rads is given an angular acceleration of 2.15 rads2. through what angle has the wheel
when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. Illustrate what is the total work done by the drag force while the ball is in the air?
A piccolo can be approximated as a tube that is open at both ends. If a piccolo is 22 cm long, what is the frequency of the lowest note it can play
A cheerleader does a handstand on other cheerleader’s hands. If the lower cheerleader weighs 180 lbs and the vertical ground reaction force is 1300 N, what should the top cheerleader's mass be to have equilibrium?
A compound microscope has a barrel whose length is 16.3 cm and an eyepiece whose focal length is 1.3 cm. What focal length must the objective have so the angular magnification of the microscope is -250
A 430 gram rock is whirled on the end of a string 45 cm long which will break under a tension of 22 N. What is the highest speed the rock can reach before the string breaks? (Neglect gravity.)
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