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A small charged bead has a mass of 3.0g . It is held in a uniform electric field E→ = (200,000 N/C, up). When the bead is released, it accelerates upward with an acceleration of 30m/s2
What is the charge on the bead? Express your answer to two significant figures and include the appropriate units.
A solid wooden ball is rotating about an axis passing through its center. If its angular speed if doubled, find by what factor does its rotational kinetic energy change
an image of the moon is focused onto a screen using a converging lens of focal length f 36.8 cm. the diameter of the
A uniform electric field of magnitude 200 N/C is in the x-direction. A point charge Q=3x10^-6 C initially at rest at the origin is realised. What is the potential difference V(4m)-V(0) What is the kinetic energy of the charge when it is at x=4m?
A point like charge of +20nC sits at the center of a thick spherical shell of inner radius 4cm and the outer radius 6cm. The shell is made of copper and has a net charge of -10nC. Describe the distribution of charge on the conductor
two skaters each of mass m are standing a slight distance apart on a nearly frictionless horizontal surface of ice
The particle positions are measure from the left end of the string (x = 0 m) and the wave pulses move to the right. What is the wavenumber of the wave? Determine the speed of the wave?
A 1.4-µC point charge is placed between the plates of a parallel plate capacitor. The charge experiences aforce of 0.44 N. What is the magnitude σ of thecharge density on either plate of the capacitor?
a rod 14.0 cm long is uniformly charged and has a total charge of -20.0 acircmicroc. determine the magnitude and
If a red laser light (He-Ne Laser) with a wavelength of 633 nm and a frequency of 4.739 *10^14 Hz, at what angle will the first order diffrection angle be
An electron of the hydrogen atom makes a transition from the n= 5 level to the n = 2 level. The Rydberg constant is 1.097x 107/m. What is the wavelength of the photon emitted?
The output voltage of a 81W transformer is 12V , and the input current is 19A. By what factor is the voltage multiplied
a block of ice of mass 4.50 is placed against a horizontal spring that has force constant 150and is compressed a
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