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You place a 10.0 cm cube of high density polyethylene, which has a density of 0.97 g/cm3, into a large bucket filled with some unknown liquid. The cube floats at rest, with its top surface horizontal, and with the bottom of the cube 6.5 cm below the surface of the liquid. You then balance a small toy Charizard on the cube, which causes it to sink such that only 1.0 cm of the cube is exposed above the liquid.
a) What is the density of the liquid?
b) What is the mass of the toy Charizard?
a coal car m1 3411 kg is rolling down the tracks at a velocity of vi 2.6 ms when a loader drops a load of coal m2
An electricity generating station has a rated output of 300 megawatts. Given that the station heat rate is 12 000kJ/kW-h, and the coal used has a heat value of 23 000kJ/kg, find the minimum possible belt-drive power required for the bunker coal co..
A heat engine operates between a hot resrvoir at 1500k and a cold reservoir at 500k. Determine the Carnot efficiency of this engine
an electric motor rotating a workshop grinding wheel at a rate of 9.80 x 101 revmin is switched off. assume the wheel
An at wood machine consist of 2 masses Ma and Mb, which are linked by an inelastic cord of legible masses that pieces over a pulley. if the pulley has radius Ro and moment of inertial I about its axle, decide the acceleration of masses Ma and Mb, and..
at the instant the traffic light turns green a car that has been waiting at an intersection starts ahead with a
Green light has a wavelength of 5.4 x 10-7 meter. Compute the frequency of this EM-wave in air
A guitar player tunes the fundamental frequency of a guitar string to 300 Hz. (a) What will be the fundamentalfrequency if she then increases the tension in the string by 20%?
A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
question1a rock is thrown from edge of the top of a 100-ft tall building at some unknown angle above the horizontal.
A hare and a tortoise compete in a race over a straight course 1.80 km long. The tortoise crawls at a speed of 0.190 m/s toward the finish line. How far is the tortoise from the finish line
Toni has a mass of 43 kg and is moving with a speed of 11.6 m/s. Assume that air resistance is negligible. Find Toni's kinetic energy
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