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A small sphere with a mass of 2.00×10−3gand carrying a charge of 4.80×10−8 C hangs from a thread near a very large, charged insulating sheet, as shown in the figure . The charge density on the sheet is−2.30×10−9 C/m^2
A. Discover the angle of the thread
An archer shoots arrows at a target. Some of the arrows stick inthe target, while others bounce off. Assuming that the masses ofthe arrows and the velocities of the arrows are the same, whicharrows produce a bigger impulse on the target? Hint: Draw a..
A 56.7 cm long straight section of wire is located entirely inside a uniform magnetic field of |B| = 0.210 T. The wire is perpendicular to the direction of the magnetic field. When a current runs during the wire a magnetic force of|F| = 0.950 N acts ..
A force of 15 N applied to a spring stretches it by 4cm. What is the potential energy of the spring in the stretched position
four charges q=4nC form a square, 20 cm on a side. what is the potential of electric field at the center of the square
two solenoids of radii 2.0 cm and 5.0 cm are coaxial. they are each 25 cm long and have 500 and 2000 turns
This problem deals with a multi-loop circuit and I was wondering how you determine the direction of the inner loops which are needed to determine if an amp or volt is added(opposite the inner loop) or subtracted(same direction as the inner loop).
Light of wavelength 300nm strikes a metal whose work function is 2.2eV. What is the shortest de Broglie wavelength for electrons that are produced as photoelectrons?
A person looks horizontally at the edge of a swimming pool. If its length is 5.00m, and the pool is filled to the surface, to what depth (in m) could observer see? For water is 1.33).
An electric dipole consists of charges +2e and-2e separated by 0.60 nm. It is in an electric fieldof strength 4.5 x 106 N/C. Calculate the magnitudeof the torque on the dipole when the dipole momentis (a) parallelto, (b) perpendicular to,and (c) anti..
an electron moves in a circular path perpendicular to a constant magnetic field of magnitude 1.00 mt. the angular
To estimate the size of the moon, a person holds a round pencil of diameter 0.70 cm. When the pencil is 77 cm in front of his eye, What is the angle subtended by the moon
A travelling at a speed of 15 m/s slams on the breaks locking the wheels of his car, What is the speed of the vehicle after 2 seconds have passed
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