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Select two objects with flat surfaces such as books with different covers, for instance hard back and paperback. You will also need an inclined surface which can be tilted, such as a larger book or a small table.
Form a hypothesis concerning the coefficient of static friction. Does the coefficient of static friction depend on the nature of the surface, for instance the surface of the table top, the surface of the sliding objects, or on both surfaces? Which case corresponds to both objects beginning to slide at the same angle, and which corresponds to the objects beginning to slide at different angles?
Use the angle of repose (θr) and the tangent function, µ =tan(θr), to find the coefficient of static friction in both cases. Was your hypothesis suppored or contradicted by the experiment?
You are stranded on a deserted island. You have some wire, but no magnets. You decide to use the Earth's magnetic field, the only one available to you. What area must the coil have
A ball rolling along at speed v without slipping on a horizontal surface while it comes to a hill that rises at a constant angle above the horizontal.
An old bucket of mass 6.75kg hangs in awell at the end of a rope. What is the total work done on the bucket
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
A bird stands on a dc electric transmission line carrying 2800 A. find the potential difference between the bird's feet
A high-voltage power line carries a current of 120A at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, 63 degrees below the horizontal. Find the magnitude of the magnetic force exerted on a 290m length..
A rock is thrown straight up with an initial velocity of (5.0 m/s)i + (10 m/s)j from a deck that is 25.0 m above the ground. how high does it reach above the deck? At its maximum height how far has it moved horizontally (i.e. in the i direction)?
A 2 meter length of steel changes length by 2.4 mm during the course of a day. what is the change in temperature of the steel
the hour hand and the minute hand of big ben a that elizabeth tower clock in london are 2.70 m and 4.50 m long and have
a 15 m long string of mass 1.8 kg is streched such that the tension in the string is 25 n. a wave of frequency 20 hz is
From the difference in mass of a hydrogen atom to the mass of a proton and an electron, estimate the binding energy of the electron in the hydrogen atom. Compare this to the ionization energy of the ground state electron as calculated by the Bohr mod..
in a region of space there is an electric field e that is in the z-direction and that has magnitude e 747 ncmx. find
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