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When a permanent magnet attracts some object, lets say a steel ball, energy is converted into for instance kinetic energy and heat when attraction happens, and they eventually collide. Does this imply that energy is drawn from the magnetic field and the magnet is depleted, making it weaker and weaker for each magnetic attraction performed?
Charge q is fired through a small hole in the positive plate of a capacitor. If q is a positive charge, does it speed up or slow down inside the capacitor? reply this question using the concept of force.
A particle of mass 0.78 kg experiences two forces. Force F1 of magnitude 3.4 N acts at a 47 angle measured counterclockwise from the positive x-direction. What is the resultant force acting on the particle
Compare and contrast the concepts of Stability, Control, and Maneuverability in an aircraft design. Explain why Charles Lindberg was very happy with the lateral stability of the Spirit of St. Louis. Was it negative, neutral or positive?
A high-pressure gas cylinder contains 50 L of toxic gas at a pressure of 1.70 x 107 N/m2 and a temperature of 26.0°C. Obtain the final pressure if one-tenth of the gas escapes
You then drop a book of mass 1.20kg onto it from a height of 0.800m above the top of the spring. Find the maximum distance the spring will be compressed.
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
A car tire is 64.0cm in diameter. The car is traveling at a speed of 16.0m/s. What is the tire's rotation frequency
A particular heat engine has a mechanical power output of4.80kW and an efficiency of26.0%. The engine expels8.90103J of exhaust energy in each cycle. Find the energy taken in during each cycle.
an 800 vm electric field is directed along the x axis. if the electric potential at x0m is 2000v what is the electric
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.23 10-3 g. Find the average pressure on the other walls
The 40 kg man in the roller coaster car is sitting on a bathroom scale. If he is travelling at 35.3 m/s at the point shown and the radius of vertical coaster track is 53 meters, to the nearest newton what does the scale read?
The speed of sound in air at room temperature is 340 m/s. What is the frequency of a sound wave in air with wavelength 1.3 m
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