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A 20-cm-radius ball is uniformly charge to 80nC. (26=4+5+5+6+6 points)
What is the ball's volume charge density?
How much charge is enclosed by spheres of radii 5, 10 and 20 cm?
What is the electric field strength at points 5, 10, 20, 25 and 35 cm from the center?
Draw the graph of the charge enclosed, Qencl with the distance r from the center of the sphere for 0<r<35 cm.
Draw the graph of the electric field, E(r) with the distance r from the center of the sphere for 0<r<35 cm.
What is the tension T2 in the left-hand cable slanted at an angle of θ2 with respect to the wall? Illustrate what is the angle θ2 which the left-hand cable makes with respect to the ceiling?
Black oil reservoirs at 250 deg F+, can there be oil cooking going on releasing some of the light and or intermediats that result in some disequilibreum under reservoir conditions (Pb vs depth could be as high as 70 psi/ft)
If a mechanical wave has a wavelength of 2.80 meters and its period is 4.5 seconds, at what speed does the wave travel
A beam of light of wavelength 569 nm traveling in air is incident on a slab of transparent material. Find the index of refraction of the material
A delivery man travels 34.0 m north, 23.0 m east, 12.0 m south, then takes an elevator 32.0 m up into a building. What is the magnitude of his displacement
In the circuit shown in the figure (Figure 1) the current through the 12.0-V battery is measured to be 70.6 mA in the direction shown
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. How far apart are the two cruisers
A convex mirror has a focal length of %u221219 cm. Where is the image if the image is upright and one-half the size of the object
A diverging lens (f = â€"12.0 cm) is located 23.0 cm to the left of a converging lens (f = 35.0 cm). Determine the distance of the final image relative to the converging lens
As a function of time, the velocity of the football can be written as. Calculate the average acceleration vector of the football
An air parcel moves northwards and becomes entrained in a strong westerly flow, circling the entire globe in the space of a few weeks. State the name given to this high-level flow and define briefly how its structure is related to lateral and vert..
A snowboarder starts from rest and glides down a hill that is 100m high. Assuming no friction, what is her speed at the bottom of the hill
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