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A 5.60 kg mass is pushed against a spring ( k = 2000 N/m) such thatthe spring is compressed 12.0 cm. The mass is released,slides 1.50 m down the incline, along which μ = 0.140. Determine the kinetic energy as it reaches level ground. (angle ofthe incline is 12 degrees)
a) 11.4 Jb) 14.4 Jc) 17.1 Jd) 20.2 J
An object is in front of a converging lens (f = 0.21 m). The magnification of the lens is m = 4.8. Through what distance should the object be moved
What should the charge (sign and magnitude) of a particle of mass 1.44 be for it to remain stationary when placed in a downward-directed electric field of magnitude 630 ? Use 9.81 for the magnitude of the acceleration due to gravity.
The model rocket is fired vertically from rest. It has a net acceleration of 17.5m/s2. After 1.5s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket travel
A 0.600 kg hammer is moving horizontally at 8.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. What was the average force exerted on the nail
A mass-spring system with a natural frequency of 4.4 Hz is started in motion with an initial displacement from equilibrium of 5.7 cm, What is the amplitude of the resulting motion
A motor running at 1500 revs/min has on its shaft three pulleys, of radii 6, 10 and 25 cm, respectively. Find the linear velocity of the outside rim of each pulley
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 1000N/C and 60mT , respectively. Find the speed of the particle if it is a proton.
An electron moving parallel to the x axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x = 2.00 cm. Which point does the proton have a higher potential energy
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
A boxer stops a punch with his head. To approximate the force of the blow, treat the opponent's glove, hand, and forearm as aparticle of mass 1.68 kg moving with aninitial velocity of 21.5 m/s.
what is the diameter of the copper rod. Pull horizontally on a crate with a force of 140 N and it slides across the floor in a dynamic equilibrium. How much friction is acting on crate.
The left end of a long glass rod 6.00cm in diameter has a convex hemispherical surface 3.00cm in radius. obtain the refractive index of the liquid
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