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The inner edge of a race track is in the form of a rectangle by two semicircular ends on the shorter sides. The rectangle is 87.0 m wide and 132.0 m long. The race track is 5.25 m wide. What is the difference among the longest path around the track taken by following along the outer edge and shortest path taken by following along the inner edge?
A certain atom of has 77 protons. Assume that the nucleus is a sphere with radius 6.73 fm and with the charge of the protons uniformly spread through the sphere. At the nucleus surface what is the magnitude of the electric field produced by the proto..
The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 300 nm
A ball is dropped from rest from the top of a building of height h. At the same instant, a second ball is projected vertically upward from ground level, such that it has zero speed when it reaches the top of the building. When the two balls pass each..
a short bar magnet of magnetic moment m 0.32 j t-1 is placed in a uniform magnetic field of 0.15 t. if the bar is free
A small sphere with a charge of -5.9 10-7 C is placed in a uniform electric field of magnitude 1.9 106 N/C pointing to the west. What is the magnitude and direction of the force on the sphere due to the electric field?
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
How much work is completed in charging the capacitor
To a fish, the 4.20 mm thick aquarium walls appear to be only 3.80 mm thick. What is the index of refraction of the walls
Using a refracting telescope, you observe the planet Mars when it is 2.11 × 1011 m from Earth. What is the minimum feature size
A ski gondola is connected to the top of a hill by a steel cable of length 620 m and diameter 1.3 cm . As the gondola comes to the end of its run, What is the speed of the pulse
An 8.17-?F capacitor is fully charged by a 325.-V battery, which is then disconnected. How much energy ends up being stored in the second capacitor
a girl throws a rock horizontally with a velocity of 10 ms from a bridge. it falls 20 m to the water below. how far
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