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A uniform electric field exists between two conducting plates separated by 1.9 mm. A dust grain with charge 65 nC (nano Coulomb's) between the plates feels a 22 N electric force.
A). Find the electric field.
B). Find the potential difference between the plates.
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.20uT, What is the amplitude of the associated electric field
An observatory has an 8-inch Celestron telescope. Estimate the diffraction limit of this telescope. Estimate the minimum size a feature on the surface of the Sun must have to be resolved by this telescope.
Pendulum A is a physical pendulum made from a thin, rigid, and uniform rod whose length is d.
When a surfer rides an ocean wave on her surfboard she is actually riding on. a. a crest that is toppling over. b. a trough of the wave. c. The rest position of the wave. d. A region of rarefaction.
A thin, light wire is wrapped around the rim of a wheel, If the suspended object moves downward a distance of 3.40m in 1.86s, what is the mass of the wheel
Precisely 1.10 after the speeder passes, the policeman steps on the accelerator. If the police car's acceleration is 2.10 m/s2, Explain how much time elapses after the police car is passed until it overtakes the speeder
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
under what condition is the cross product of two vectors of afixed magnitude maximum? what is the value of the vertical component of the velocity fora projectile at the top of its trajectory? what is the vector of acceleration foran object moving at ..
A metal bar changes in length by 1 meter with a 150 degree C change in temperature. It's coeffieceint of linea expansion is 25 x 10^-6 per degree Celsius. what is the metal bar's original length?
A 117-cm-long, 4.00g string oscillates in its n = 4 mode with a frequency of 200 Hz and a maximum amplitude of 5.50 mm. What is the tension in the string
Three equal point charges, each with charge 1.50, are placed at the vertices of an equilateral triangle whose sides are of length 0.550. What is the electric potential energy of the system? (Take as zero the potential energy of the three charges w..
an 15.0-kg box is released on a 35.0 incline and accelerates down the incline at 0.290m/s^2, Find the friction force impeding its motion
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