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A 205 kilogram log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30o with the respect to the horizontal. The coefficient of kinetic friction between the ramp and the log is 0.900, the log has an acceleration of 0,800m/s2. Evaluate what the tension in the rope.
A rock of mass m = 1.0 kg is tied to a string of length L = 1.9 m and is twirled in a vertical circle. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the string is zero when the..
A lightbulb has a resistance of 230? when operating with a potential difference of 180V across it. What is the current in the lightbulb? mA
A standing wave has been created on a string of length 1.5m. The frequency of the wave is 25Hz. The ends of the string are nodal points and there are 3 antinodes. If the maximum amplitude of the wave is 5cm, write complete expressions, including v..
You have just built a house out in the country and it comes to your attention that you need to install a lightning rod. Being naturally curious you ask a hardware salesperson how lightning rods work and they accurately tell you.
a small package is fired off earths surface with a speed v at a 45deg angle.it reaches a maximum height h above the
suppose 1.0 mol of a monatomic ideal gas initially at 10 l and 330 k is heated at constant volume to 660 k allowed to
transverse pulses travel with a speed of 200 ms along a taut copper wire whose diameter is 1.50 mm. what is the tension
Sunlight falls on two polarizers with their polarization axes oriented 57° to one another. What fraction of the light intensity is transmitted
procedures in the physical sciences challenges in measurementsidentify three specific challenges to making direct
A professor shipwrecked on Hooligan's Island decides to build a telescope from his eyeglasses and some coconut shells. Which lens should he use as the objective
In an experiment to study magnetic induction , in the North Pole of a permanent magnet is moved left to right toward a coil having 20 turns at a constant speed of 20 cm/s. find Is the voltage positive or negative
The surface waters of tropical oceans are at a temperature of 28?C while water at a depth of 1200 m is at 3?C. What is the maximum efficiency possible of such a heat engine
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