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Discover the electric force on a point charge Q1 at any point P along the x axis due to a thin charged needle of length L given that the charge distribution is \lambda = a(l-L)^3 where l is the length of the segment and L is the total length of the rod and a is several constant. The origin lies on the left side of the needle.
After sliding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.4 m/s. Miranda runs after her at a velocity of +4.4 m/s and hops on the inner tube. How fast do the two of them slide ac..
A string 2m long is fixed at both ends. It is found that standingwaves can be set up in this string for frequencies of 200Hz and250Hz, What is the fundamental frequency of the string
Water has a specific heat capacity of 4186 J/kg C. A tank contains 500 kg of water at 10 C. what is the cost of heating the water
A cosmic-ray proton in interstellar space has an energy of 25.0 MeV, What is the magnetic field in that region of space
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 6 iron. For how much more time was the ball in flight
An unstable particle is at rest and suddenly breaks up into two fragments. No external forces act on the particle or its fragments. What is the velocity of the more massive fragment
a lead bullet weighing 0.0200 lbf and traveling horizontally at 3000. fts is suddenly stopped by a perfectly rigid
A water pistol aimed horizontally projects a stream of water with an initial speed of 6.90 m/s. How far does the water drop in moving 1.50 m horizontally? How far does it travel before dropping a vertical distanceof 2.00 cm?
A flagpole of length 9 m and mass 35 kg is hinged at one end, where it is connected to a wall as sketched below. The pole is held up by a cable attached to the end. Find out the tension in the cable. (Assume the flagpole has an uniform mass distr..
Two different simple harmonic oscillators have the same natural frequency (f=9.10 Hz) when they are on the surface of the Earth. The first oscillator is a pendulum, what is the new frequency of the pendulum
Calculate the efficiency of a fossil-fuel power plant that consumes 450 metric tons of coal each hour to produce useful work at the rate of 900 MW
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.0 m/s due north relative to the water. If the river is 330 m wide, explain how far downstream has the boat moved by the time it reaches the ..
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