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Mary applies a force of 70 N to push a box with an acceleration of 0.49 m/s2. When she increases the pushing force to 80 N, the box's acceleration changes to 0.72 m/s2. There is a constant friction force present between the floor and the box.
(a) What is the mass of the box?
kg
(b) What is the coefficient of kinetic friction between the floor and the box?
A 16.5 kg gold bar at 27 °C is placed in a large, insulated 0.800 kg glass container at 15°C with 2.00 kg of water at 25.0°C. Compute the final equilibrium temperature.
A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, illustrate what is the new pressure of the gas?
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Evaluate the stability of of Na in the NaCl structure
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A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, How fast is the center of mass of the two-stone system moving
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While a certain rubber band is stretched a distance x, it exerts a restoring force of magnitude F=ax+bx^2, where a and b are constants. The work completed in stretching this rubber band from x=0 to x=L is what.
The 3.70 cm3 volume between the plates of a 444 pF parallel-plate capacitor is filled with a dielectric, Find the permittivity of the dielectric
a series rlc ac circuit has resistance r = 200 ohms, inductance l = 0.500 H, capacitance c = 4.00 uf, frequency 60.0 hz, What are the maximum voltages across the elements
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