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Three equal point charges, each with charge 1.75mC , are placed at the vertices of an equilateral triangle whose sides are of length 0.200m . What is the electric potential energy of the system? (Take as zero the potential energy U of the three charges when they are infinitely far apart.) Use Eo = 8.85 × 10-12 F/m for the permittivity of free space.
A superhero flies 272m from the top of a tall building at an angle of 32 below the horizontal. What is the vertical component of the superhero's displacement.
One cubic meter (1.00 m3) of aluminum has a mass of 2.70 103 kg, and the same volume of iron has a mass of 7.86 103 kg. Find the radius of a solid aluminum sphere
An 18-cm-long bicycle crank arm, with a pedal at one end, is attached to a 20-cm-diameter sprocket, the toothed disk around which the chain moves. What is the tangential acceleration of the pedal.
A bead slides without friction around a loop- the-loop. The bead is released from a height of 24.7 m from the bottom of the loop-the- loop which has a radius 9 m.
Ceres, the smallest identified dwarf planet in the Solar System, has a radius R = 480 km, Use these numbers to calculate the escape speed from the surface of Ceres
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
A certain raft is 2.5 m long, 0.55 m wide, and 14 cm deep. If the raft itself has a mass of 15.6 kg, what is the maximum mass it can support in fresh water
The spring constant for the tendon is the same for both groups, 33 N/mm. Illustrate what is the difference in maximum stored energy between the sprinters and the nonathletes?
A satellite is in a circular orbit about the earth (M=5.98 x 10^24 kg). The period of the satellite is 1.40 x 10^4 s. What is the speed at which the satellite travels
llustrate what actions would you recommend to Carlos Fernandez to help Grupo Modelo sustain or improve its competitive position, especially its international operations and its long-term financial performance?
Your friend decides to produce electrical power by turning a coil of 100,000 circular loops of wire around an axis parallel to a diameter in the Earth's magnetic field, What will be the average power obtained from this device
A heart pacemaker fires 66 times a minute, each time a 29.0-nF capacitor is charged (by a battery in series with a resistor) to 0.632 of its full voltage
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