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Two horses pull a large crate at fix speed across a barn floor by means of two light steel cables. A large box of mass 250 kilogram sits on the crate. As the horse pull, the cables are parallel to the horizontal floor. The coefficient of friction between the barn floor and the crate is 0.25.
a) Calculate the work done by each horse if the box is moved a distance of 25 meter?
b) Find the tension in each cable if the angle between each cable and the direction the crate moves is 15 degree?
A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of 3.30 m/s. find the distance the sled moves before it stops
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A box of mass 15 kg slides at a constant velocity, along a flat surface, with a coefficient of kinectic friction of 0.75. how much work is done is done by the normal force
question the shells fired form an artillery piece have a muzzle speed of 150 ms and the target is at a horizontal
A charge of 38 μC is distributed evenly over a sheet of area 3.3m2 positioned on the y-z plane. Calculate the charge density on the sheet
A 18--long nichrome wire is connected across the terminals of a 1.5 battery. What is the electric field inside the wire? What is the current density inside the wire? If the current in the wire is 3.0 , what is the wire's diameter? please show what fo..
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An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 1.81 10-7 C/m2, and the plates are separated by a distance of 1.38 10-2 m. How fast is the electron moving just be..
in a double-slit interference experiment the wavelength is 478 nm the slit separation is 0.140 mm and the screen is
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A set of crash tests consists of running a test car moving at a speed of 11.8 m/s (26.4 mi/hr) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
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