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A sinusoidal ac voltage source in a circuit produces a maximum voltage of 12.6V and an rms current of 7.50mA.
a) Find voltage amplitude(V)
b) find current amplitude(mA)
c) find rms voltage of this source(V)
On a clear day at a certain location, a 123-V/m vertical electric field exists near the Earth's surface. Compute the energy density of the magnetic field
A candle is placed 13.38 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, Find the focal length of the convex mirror
The light from a distant star takes 252 years to reach the earth. How far away is the star from the earth
A 21 kg block on a horizontal surface is attached to a horizontal spring of spring constant k = 2.3 kN/m, What is the kinetic energy of the block when it has moved 2.0 cm from its point of release
A 66 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 15° above the horizontal. what is the magnitude of the initial acceleration of the crate
Armed with highly sensitive detection equipment, you are in the front of a railroad car that is accelerating forward. Do you find the light to be red-shifted (lowered in frequency), blue-shifted (increase in frequency), or neither
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
The water molecule H2O, with a permanent dipole moment of magnitude 6.2*10^-30 Cm, What force does the ion exert on the water molecule
In a double slit experiment there are two plane monochromatic waves incident on the slits. One wavelength is red with lamba= 600.0 nm, Calculate the linear separation of the red fringes
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 60.0m/s , Find the vertical component (Fy) of the average force on the ball
A flagpole consists of a flexible, 7.02 m tall fiberglass pole planted in concrete. What is the lowest frequency standing wave that can be formed on the flagpole
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