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A cannon, placed in the valley, fires a shell at 31 degree with respect to the horizontal line. the initial speed of the shell is 512 m/s. Find the time it takes the shell to hit the ground. Calculate the range of the shell (the horizontal distance traveled by the shell).
Steel train rails are laid in 12.2 m -long segments placed end to end. The rails are laid on a winter day when their temperature is-2.00degrees C. How much space must be left between adjacent rails
As a mechanical engineer, you must design a cooling unit fora new freezer. The enclosure has an inner surface of 6.0m2, What is the minimum power requirement of the cooling motor
in a region where there is an electric field the electric forces do 7.85x 10-19 j of work on an electron as it moves
Two forces act on a block of wood. The first force has a magnitude of 8.66 N in a direction 12.0 degrees counterclockwise from the positive x-axis, What is the magnitude of the resulting force
1. expalin why ionic compound are formed when a metal from the left side of the periodic table reacts with a nonmetal
assume you throw someone a ball, thereby transporting kinetic energy. Could you consider the motion of the ball to be a mechanical wave pulse.
The electric potential difference between two infinite, parallel metal plates is V. If the plates are separated by a distance L = 4.50 mm and the electric field between plates is E = 270 V/m, what is V.
You construct two wire-frame cubes, one using (infinitely thin) copper wire, the other using (infinitely thin) aluminium wire. Find the difference in volume between the cubes
Suppose the masses of stars are distributed according to f(M)dM == M^-2 dM. Assume you can use the luminostiy mass relation L == M^3. (Both a and b are constants.) What is teh corresponding distribution function for luminosities, g(L), such that g(L)..
A uniform beam of length L = 8.00 m and weight 5.35x10^2 N is carried by two workers, Determine the force that each person exerts on the beam
a speed skater goes around a turn that has a radius of 26 m. the skater has a speed of 14 ms and experiences a
A block of mass m = 3.40 kg is pushed a distance d = 2.30 m along a frictionless, Determine the work done by the net force on the block.
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