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A 390 g glass coffee cup is at a room temperature of 20?C. It is then plunged into hot dishwater at 80 ?C. If the temperature of the cup reaches that of the dishwater, how much heat does the cup absorb? Assume the mass of the dishwater is large enough so its temperature doesn't change appreciably and the specific heat of glass is 840 J/kg ·?C. Answer in units of J
A microscope has a 16.8 cm tube length, a 0.64 cm focal length of the objective lens, calculate the microscope's magnification
A box is sliding up an incline that makes an angle of 27.7 ° regarding the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.113. The initial speed of the box at the bottom of the incline is 2.27 m/s...
Consider two simple pendulums p and q of equal length l and mass m1 and m2 respectively. assume the bobs of the pendulum are connected to each other by a weightless spring of force constant k such that in the equilibrium position,the spring is uns..
Estimate approximately the angular deflection of the muon's trajectory, given that the rest mass of muon is 100Mev and that the saturation magnetization in iron is equivalent to 1.6 x 10^23 electron moments per cm^3.
A metal block of mass m slides on a horizontal surface that has been lubricated with a heavy oil so that the block suffers a viscous resistance that varies as the 3/2 power of the speed F(v)=-cv^3/2. If the initial speed of the block is v0 at x=0,..
A 25 g bullet strikes and becomes embedded in a 1.65 kg block of wood placed on a horizontal surface just in front of the gun, what was the muzzle speed of the bullet
A 392\({\rm g}\) oscillator has a speed of 90.5\({\rm cm/s}\) when its displacement is 3.90\({\rm cm}\)and 74.5\({\rm cm/s}\), What is the oscillator's maximum speed
Three point charges are arranged along the x axis. Charge q1=-4 nC is located at x=0.240m and charge q2=2.10 nC is at x=-0.350m, What is the direction of the net force on q3
A woman is reported to have fallen 139 ft from a building, landing on a metal ventilator box, which she crushed to a depth of 30 in. She suffered only minor injuries.
A person walks 25.0 degrees north of east for 3.1 km. How far would another person walk due north and due east to arrive at the same location.
A particular vacuum flask has a mass of 1 kilogram and contains 1 liter of liquid water, how much energy did the heating element supply, You can disregard the energy needed to warm and vaporize the water
13 cars in a circle at a boom box competition produce a 110 dB sound level at the center of the circle. What is the average sound level produced there by each
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