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1. If the surface charge density on the surface of a conductor is 10 mC/ m2, what is the electric flux density just above its surface?
2. Consider an interface between free space and a dielectric medium with dielectric constant of 5. The normal component of the D- field in free space is 10 C/m2, and the tangential component of the E- field in the dielectric medium is 100 V/m. Find their counterparts.
A ball is launched from a cannon at the ground level with speed v0=40 m/s at an angle 36.9 degrees above the horizontal. Find the horizontal range
An electron is accelerated through a potential difference of 3.00 V before colliding with a metal target. What minimum-wavelength light can such an electron emit
To celebrate a victory, a pitcher throws his glove straight upward with an initial speed of 7.0 m/s. How long does it take for the glove to return to the pitcher
A 60.0-kg satellite is in orbit a distance 2000 km above the surface of the earth. How much work must be done on the satellite to move it to a circular orbit 5000 km above the surface of the earth
A 0.10kg solid rubber ball is attached to the end of a 0.80 m length of light thread. The ball is swung in a vertical circle. Point p, the lowest point of the circle, is 0.20 m above the floor.
a capacitor is formed from a hollow copper sphere of inner radius 44.5 cm and outer radius 55.6 cm. calculate the
A rifle fires a bullet horizontally on level ground. Just as the bullet leaves the rifle, the rifle falls to the ground. Find which will hit the ground first
A 1.2 m long 1.7 kg horizontal rod is able to pivot regarding one end. A 35 gm bullet strikes and becomes embedded in the rod at its other end. The bullet is originally moving at 250 m/s and the rod is initially stationary. What is the angular speed ..
A 3.8 kg ball is at rest on the floor in a 1.2 m ? 1.2 m ? 1.2 m room of air at STP. Air is 80% nitrogen (N2) and 20% oxygen (O2) by volume. What is the thermal energy of the air in the room
The position vector,r, in meters, of a particle moving in the x-y plane, is giving by the following equation: r=i(2t^2-8t-12)+j(2t^3-18t^2+48t+25), find the direction of the velocity vector at the instant
An advertisement claims that a centrifuge takes up only 0.127m of bench space but can produce a radial acceleration of 3000g (g= 9.8m/s^2) at 5000 rev/min
In a typical lightning flash, the potential difference between the cloud and the ground is 10^9V and the charge transferred is 30 C. Calculate the final speed of the car
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