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An asteroid is headed towards a starbase. To try and avoid a collision, an explosive device is planted on the asteroid, which breaks it into two pieces, one of which is 2.4 times the mass of the other. Both pieces pass the starbase at the same time. The starbase itself is 2.2 km wide, and the lighter piece of the asteroid passes it 1800 m from one of the starbases edges. Does the other piece of the asteroid hit the starbase? The answer is No it pass 100m from the outer edge but how?
A lamp is designed to operate at a temperature of 3100K. If the lamp is operated at a higher voltage that raises its temperature to 3500K
What is the work done by the tension in the cable.assume the roller coaster (h1 = 34 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach..
When a softball player swings a bat, she accelerates it from rest to an angular velocity of 10 rad/s in a time of 0.26792 seconds. What is the magnitude of the torque she applies to the end of the bat? Model the bat as a uniform rod of length 0.90 m ..
The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 601 mW/ m2
A child throws a stone from the top of a 15 m cliff with a speed of 20 m/s. find its kinetic energy and speed when it lands on the ground
A bob of mass m = 0.300kg is suspended from a fixed point with a massless string of length L = 21.0cm, What tangential speed v must the bob have so that it moves in a horizontal circle with the string making an angle 24.0
An electric motor rotating a workshop grinding wheel at a rate of 8.90 101 rev/min is switched off. Through how many radians has the wheel turned during the interval found in (a)
A 1300-kg car moving on a horizontal surface has speed v = 55km/h when it strikes a horizontal coiled spring, What is the spring stiffness constant of the spring
A string is wrapped tightly around the circumference of a wheel with a mass of 1.23 kg and a radius of 0.324 m. find the velocity of the block just before it hits the floor
q1. an electron moves with a horizontal velocity of 3106 ms as it enters a deflector inside a tv tube. the electron
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
For the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg.
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