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Two 10-cm-diameter charged disks face each other, 21 cm apart. Both disks are charged to - 70 nC.
The electric field strength at the midpoint between the two disks is 0 N/C
What is the field strength a point on the axis 5 cm from one disk between them? (N/C)
A charge of -2.87 ?C is fixed in place. From a horizontal distance of 0.0470 m, a particle of mass 7.43 x 10-3 kg and charge -9.14 ?C is fired with an initial speed of 60.0 m/s, How far does the particle travel before its speed is zero
An irregularly shaped chunk of concrete has a hollow spherical cavity inside. The mass of the chunk is 41.5 kg, What is the radius of the spherical cavity
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 54.35 diopters, and the lens-to-retina distance is 1.859 cm. How far is the blackboard from her eyes
A grinding wheel is in the form of a uniform solid disk of radius 6.93 cm and mass 1.97 kg. how many revolutions does it turn while accelerating
Electrons are accelerated from rest through an electric potential difference of 250kV, then the potential difference is changed to 60kV. What is the ratio of the two de Broglie wavelengths produced by the electron
In a typical living cell, the electric potential inside thecell is 0.070 V lower than the electric potential outside the cell. The thicknes of the cell membrane is 010 μm. What is the magnitude and direction of the electric fieldwithin the cell me..
Illustrate what is the concentration of sodium and chloride ions at a distance 3 angstroms from protein surface.
A metallic sphere has a charge of +3.9 nC. A negatively charged rod has a charge of -6.0 nC. What are the charges of the sphere and the rod
Two insulating spheres having a radii of 0.44cm and 0.64cm, masses 0.16kg and 0.49kg, How fast is the smaller sphere moving when they collide
A long straight metal wire of radius r1= 3.30E-2 m is bounded by a metalic cylindrical shell of inner radius r2= 1.39 E-1 m and outer radius r3= 1.84E-1 m.
A handball is projected at an angle of 30 deg with the horizontal from a 20 m tower with an initial vertical velocity of 10 m/sec, find the Resultant velocity at landing
what is the max number of steps any worker should be allowed.
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