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A sample of serum has a mass of 54 mg and a volume of 225 cm3. What is its density in g/cm3? What would be the mass of 150 fluid ounces of this serum? What would be the volume of 1 pound of this serum?
Two identical 0.13 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, How far did the center of mass of the real system move
Two negative chrges are placed on the x-axis. A charge of -11.4 micro coulmbs is placed at x=0cm and another charge of -5.4 m/C is placed at x=119cm. where on the x axis is the total field between the two charges zero? Answer in cm
A 400 g lemming (does anyone remember that old computer game?) waddles horizontally off a small 4.90 m high cliff with a speed of 0.5 ms-1.How far from the base of the cliff will the lemming land? What will be the lemmings speed upon landing.
A girl delivering newspapers covers her route by traveling 9.99 blocks west, 4.00 blocks north, and then 1.00 blocks east
A U.S. penny has a diameter of 1.9000cm at 20.0 C . The coin is made of a metal alloy (mostly zinc) for which the coefficient of linear expansion is 2.6e-5 K^-1. What would its diameter be on a hot day in Death Valley
Two boxes, A and B, are connected by a (mass-less) cord and are resting on a smooth (frictionless) table. Find the tension force in the cord connecting the two boxes
The photoelectric threshold wavelength of a tungsten surface is 272. Calculate the maximum kinetic energy (in ) of the electrons
A block of ice weighs 100 N. You can lift the block vertically a distance of 2 m. You can also push the same block up a ramp that is 4 m long, What is the increase in the block's gravitational potential energy in each case
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
A rope attached to a 15.0kg wood sled pulls the sled up a 20.0 degree snow-covered hill. If the tension in the rope steadily increases, at what value of the tension does the box slip
A ball is dropped from the top of a 48.0m high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 20.0m/s . The stone and ball collide part way up. how far from the base did this ..
A thin rod of length 0.84 m and mass 190 g is suspended freely from one end. find how far above that position the center of mass rises
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