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Three forces act on an object at rest ( which means the vector sum of the three forces is zero). The first force is 311 N at an angle of 22.0 degrees. The second force is 188 N at an angle of 318 degrees. Find the third force (magnitude and direction).
q1. a 60 m ladder leans against a wall. what is the minimum force of friction essential to prevent the ladder from
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
An ice skater is gliding horizontally across the ice with an initial velocity of +6.46 m/s. How much time elapses before her velocity is reduced to +2.69 m/s
A child pulls on a wagon with a horizontal force of 75 N. If the wagon moves horizontally a total of 42 m in 3.4.0 min, what is the average power generated by the child
a 200 loop square coil 0.8m to a side lies in the xy plane. The current in each loop of the coil is 8A clockwise. find the torque on the coil due to the magnetic field
The rear end of an air conditioner dumps 1.2 * 10^7 J/hr of waste heat into the air outside a building. A fan assists in the removal of this heat. With what temperature does the air emerge
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A 49.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
The lightbulb in the circuit shown in the figure(Figure 1) has a resistance of 14? and consumes 9.7W of power, find speed of the rod
State Newton's three laws of Motion and What is the difference between elastic collision and inelastic collision
A 6 kg box is held at rest by two ropes that form a 30 degree angle with the vertical. and external for F acts vertically downward on the box.
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