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Two 1.5-cm-diameter disks face each other, 2.0 mm apart. They are charged to ± 9.0 nC.
Part A: What is the electric field strength between the disks? I figured this part out to be 5.8*10^6, which was correct but I really need help with part B!
Part B: A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk?
Calculate the limiting angle of resolution for the eye, assuming a pupil diameter of 1.95 mm, a wavelength of 530 nm in air
A nuclear power plant generates(output) 500 MW. it is 34% efficient, How much does the water temperature rise
Assume a 64 kg boy and a 42 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3 m/s2, find out the magnitude of the acceleration of the boy toward girl.
In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth. How much work did Arfeuille do on the object
A small but measurable current of 1.1 10-10A exists in a copper wire whose diameter is 3.1 mm. Assume the current is uniform. Calculate the current density
Unpoloarized light is passed through a set of n polarizers. The first polarizer is arranged with the polarizing slits aligned vertically, and the last polarizer of the set is arranged so its slits are aligned horizontally. Each polarizer in betwee..
A 4.8mH toroidal inductor has 140 identical equally spaced coils. If it carries an 11.5 A current, how much magnetic flux passes through each of its coils
A hunter wishes to cross a river that is 2.1 km wide and that flows with a speed of 3.8 km/h. What is the minimum time necessary for crossing
A 310 turn solenoid with a length of 18.0 cm and a radius of 1.30 cm carries a current of 1.70 A. Calculate the change in the magnetic flux through the 4-turn coil during the same period
plan a picutre showing Mary's displacment due to rowing, her displacemnet due to the river's motion, and her net displacement.
A molecule of DNA is 2.17 micrometers (10^-6 meters)long. The ends of the molecule become singly ionized -negative on one end, positive on the other. Determine the effective spring constant
a cylindrical steel pressure vessel with volume 1.32m3 is to be tested. the vessel is entirely filled with water then a
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