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In a volcanic eruption, a 2400-kg boulder is thrown vertically upward into the air. At its highest point, it suddenly explodes into two fragments, one being three times the mass of the other. The lighter fragment starts out with only horizontal velocity and lands 274 m directly north of the point of the explosion. Where will the fragment land? Neglect any air resistance.
Assume that the rod is held at rest horizontally and then released. (Throughout the remainder of this problem, your answer may include the symbol, moment of inertia of the assembly, whether or not you have answered the first part correctly.)
A playground is on the flat roof of a city school, 5.4 m above the street below (see figure). The vertical wall of the building is h = 6.90 m high, Find the vertical distance by which the ball clears the wall.
A beam of protons, each with kinetic energy of 40MeV, approaches a step potential of 30MeV. What fraction of the beam is reflected and transmitted
what is the magnetic field between the rails. A lead ball is dropped into a lake from a diving board 6 above the water. After entering the water, it sinks to bottom with a constant velocity equal to the velocity with which it hit the water. The bal..
The potential difference across a resting neuron in the human body is about 70 mV, How much power does the neuron release
A boat with a speed of 10.0 m/s aims directly across a 250-m-wide river. If the water current is 2.00 m/s, how far downstream will the boat be when it reaches the other side
The rms current in a copy machine is 7.10 A, and the resistance of the machine is 23.5?. determine the peak power delivered to the machine
presume you had job offers from two companies that differed only in how often they produced CEOs. Would these differences affect your decision.
q1. a 4.00 x 100 g glass coffee cup is 22.0 c at room temperature. it is next plunged into hot dishwater at the
An airplane starting from airport A flies 280 km east, then 365 km at 29.0° west of north, and then 130 km north to arrive finally at airport B.
One afternoon, you are playing on a wooden basketball court with a hula-hoop to amuse yourself. find the hoop's speed just before it hits the wall
Design a decorative "mobile" to consist of a low-mass rod of length 0.46 m suspended from a string so that the rod is horizontal, find the tension in the string that supports the mobile
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