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A wall clock has a minute hand with a length of 0.51 m and an hour hand with a length of 0.28 m. Take the center of the clock as the origin, and use a Cartesian coordinate system with the positive x axis pointing to 3 o'clock and the positive y axis pointing to 12 o'clock. Write the vector that describes the displacement of a fly if it quickly goes from the tip of the minute hand to the tip of the hour hand at 3:00 P.M. (Let represents the displacement of the fly.)
Two parallel conducting plates with the small gap of 1.0 cm are charged oppositely each other. What is the acceleration of the electron
a person stands at the base of a hill that is a straight incline making an angle phi with the horizontal. for a given
a cloud mass moving across the ocean at an altitude of 2000 m encounters a coastal mountain range. as it rises to a
A satellite is in a circular orbit 1000 km above the Earth's surface; i.e., it moves on a circular path under the influence of nothing but the Earth's gravity. Find the time it takes to complete one orbit around the Earth
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, What is the electric potential energy of this system of charges
A non-uniform beam of length 4.51m and weight 1.05kN makes an angle of 24.0 degrees with the horizontal. Find the vertical component of the force exerted on the beam by the pivot
A woman pulls a loaded sled of mass m = 75 kg along a horizontal surface at constant velocity
A heat engine operates between a reservoir at 28°C and one at 354°C. What is the maximum efficiency possible for this engine
A 3.0-uC point charge is placed in an external uniform electric fieldof 1.6 x 104 N/C. At what distance from the charge is the net electric field zero
A wave has the following properties: amplitude = 0.559 m, period = 0.801 s, wave speed = 13.9 m/s. What is the equation for the wave
Assume that there is an announcement of a fantastic process capable of putting the contents of physics library on a very smooth postcard. Will it be readable with an electron microscope? Explain.
A parallel-plate capacitor has circular plates of 6.80 cm radius and 1.40 mm separation. Calculate the capacitance. What charge will appear on the plates if a potential differenceof 108 V is applied?
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