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a force of 300 pounds compresses a 10-inch string to a length of 4 inches1 calculate the work done in compressing the
a cutting tool under microprocessor control has several forces acting on it one force is f -alpha xy2 hat j a force
1 a rock is thrown straight up from the surface of the earth which one of the following statements describes the energy
a pile driver drives a pile into the ground this means that a mass of 1000kg is lifted through 5m and released to fall
1 suppose that a photon has energy of 5 x 10 -19 j five times ten to the negative 19th joule whats the wavelength of
light from a laser hits the surface of cesium with a minimum photon energy of 214ev being required to remove photons
1to immobilize a fractured femur doctors often utilize the russell traction system illustrated in the figure below
an object of mass m1 on a frictionless horizontal table is connected to an object of mass m2 through a very light
you exhale at the rate of 14 breaths a minute under normal conditions each breath containing 050 l of air you exhale
1 what is linear momemtum of a 198 kg aircraft going 483ms2a 240kg cart runs into the rear of a 134kg cart that is
1 a person standing on the floor is leaning against a wall the wall exerts on the person a force of 100 n in the
multiple choice1when you stand on one footayour centre of mass will be directly above that footbyour centre of mass
1 you are loading a spring loaded dart gun and do an amount of work w such that the spring is only 13 compressed how
1if a 60 kg woman is riding in a car travelling at 90kmh what is her linear momentum relative to athe ground b the
1 consider the energy of a 100 kg rockawhat is the gravitational potential energy pe of the rock that is on a table 5 m
powerpoint presentation and accompanying five minute speaking presentation to memorize onhow are amounts of greenhouse
3 point charges q1 q2 q3 are located in the xy plane at points -100 100 and -512 respectivelythe charges are given
1 from the given list select a possible pair for the value of coefficient of static and kinetic frictions mus and muk
1 if the 10-kg ball has a velocity of 3 ms when it is at the position a along the vertical path determine the tension
a charged particle with a charge of 50 micro coulombs is initially at rest it is accelerated through a potential
the story goes that a boy in holland saved his country from being flooded by plugging a hole in the sea wall with his
1 if you do 100 j of work to elevate a bucket of water what is its gravitational energy relative to its starting
1 to cause a 25 kg object to experience an acceleration of 2 ms2 the net force that needs to be applied to the object
two streams flow into 500 gallon tank the first stream contains 10 wt ethanol and 90 wt hexane density 068 gcc while
an object is under the force f k1x i - k2y j calculate the work done by this force when the objecta moves on the