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Airplane flight recorders must be able to survive catastrophiccrashes. Therefore, they are typically encased in crash-resistantsteel or titanium boxes that are subjected to rigorous testing. Oneof the tests is an impact shock test, in which the box must survivebeing thrown at high speeds against a barrier. A 41-kg box isthrown at a speed of 190 m/s and isbrought to a halt in a collision that lasts for a time of6.9 ms. What is the magnitude of the average net force that acts on the box during the collision?
A bicycle has wheels with a diameter of 0.650 m. Find the linear acceleration of the bicycle
question1assume two boxes on a frictionless table are linked by a heavy cord of mass 1.0 kg. compute acceleration
A man goes fishing for dinner. He walks 4 km due West from his house, and tries to catch a fish, after 6 hours and no fish, he walks 4 km due North. What is the color of the bear
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.744 rev/s. Calculate the initial and final kinetic energies for this system
If an electroscope is charged by induction
You and your friend are standing on a horizontal platform that is rotating about its center. What is the difference between your angular speed (in rad/s) and your friend's speed
A bar of length 2 cm slides along metal rails at a speed of 1 cm/s. The bar and rails are in a magnectic field of 2 T, pointing out of the page. what is the induced emf in the bar and rails
A 1.35 kg object is moving in the x direction at 16.4 m/s. Just 3.61 s later, it is moving at 28.8 m/s at 36.0^circ to the x axis. What is the magnitude of force applied throughout this time.
A 4kg pumpkin is sitting stationary on a platform. What is the total energy of the pumpkin measured by a person standing on the platform
Find out the coefficient of static friction
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
An egg is thrown nearly vertically upward from a point near the cornice of a tall building. What is the initial speed of the egg
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