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An electric field of approximately + 100 V/m is often observed near the surface of the Earth. If this were the field over the entire surface of the Earth,
1. What would be the magnitude and sign of the charge on the Earth?
2. What would be the total electrical flux over the Earths' entire surface?
3. What would be the electrical potential at a point near the Earth's surface?
A 0.14 kg sphere hangs on a string from the ceiling of a car that is accelerating horizontally at a constant rate. What is the magnitude of the net force on the sphere
you launch a small rocket up into the air. the rocket has a constant total acceleration of 12m/s^2 and burns for 10 seconds. ignoring air resistance: find the velocity of the rocket when it burns out
You shine a laser on a plastic prism made from an unknown material and measure the angles relative to the normal that the light takes both inside and outside the medium. What is the index of refraction of the plastic object
a 55.0-kg box rests on a horizontal surface. the coefficient of static friction between the box and the surface is
An object has a kinetic energy of 303 J and the momentum of magnitude 22.9 kg·m/s. Find the speed and the mass of the object.
the latent heat of fusion for water is 33.5 times 104 jkg while the latent heat of vaporization is 22.6 times 105 jkg.
A passenger on a boat moving at 1.20 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s. What is the velocity of the passenger relative to the water
A 1000-kg car travelling at a speed of 32 m/s skids to a halt on wet concrete where f_k = 0.3. How long are the skid marks.
The cars stick together and move as a unit after the collision, at an angle of 47.0° north of east and at a speed of 6.36 m/s. Find out the speed of the 3000 kg car before the collision.
You are using a magnifying glass held against your eye to study an insect. The distance between the insect and your eye/magnifying glass is 2.5cm. What is the angular magnification of the magnifying glass?
In a particular region of the earth's atmosphere, Calculate the volume charge density of the atmosphere assuming it to be uniform between 258 and 402 m. Neglect the curvature of the earth
Vector A has components of +3 in the x-direction and -4 in the y-direction. Vector B has components -2 in the x-direction and +3 in the z-direction
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