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A hiker, who weighs 900 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3060 N, and rests on two concrete supports, one at each end. He stops one-fifth of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge at each end?
A small rope has a linear mass density of 8.00 g/m and is tied to two vertical walls that are separated by three fourths the length of the rope, Find an expression for the speed of a wave on the rope as a function of m
Using Newton's Version of Kepler's Third Law II Calculate the orbital period of the Space Shuttle in an orbit 200 above Earth's surface. Express your answer using two significant figures. T= s
A tube is open only at one end. A certain harmonic produced by the tube has a frequency of 470 Hz. What is the length of the tube
A particular fish tank filled with fresh water (n=1.33) has a coral reef sticker stuck to an exterior wall(outside of the tank). What is the index of refraction of the tank's walls
A point charge -Q is at the center of a spherical conducting shell of inner radius R1 and outer radius R2, What is the charge on the inner surface of the shell
The magnetic field over a certain range is given by B= Bxi + Byj where Bx= 6T and By= 4T. What is the j component of the force
Upon and following the introduction of Coulomb's law, my book keeps referencing to the electric force experienced between two point particles as just that--between two point particles. Does mass affect Coulombs law in any way?
Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 9.0g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.
A circuit is connected in parallel with two capacitor C1=6F and C2=3F with seperate switches S1,S2 and has a voltage of 20V. capacitor C1 is first charged by closing switch S1. switch S1 is then opened , and charged capacitor is connected to the un..
The gravitational acceleration of bodies dropped near the Moon's surface is about 1.6 m/s^2. Find the time for an object dropped from rest to fall 3.0m on the Moon Find the time for an object dropped from rest to fall 3.0m on Earth.
A 9.0 V battery and three resistors are all connected in series. What is the potential difference across the third resistor
A pair of narrow slits are .075 mm apart and are located 1.5 m from the screen. Find the wavelength of the beam
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