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What will be the equilibrium temperature when a 239 g block of copper at 274 degrees C is placed in a 140 g aluminum calorimeter cup containing 817 g of water at 13.7 degrees C?
In response to a stimulus, membrane can become permeable to Na ions. As Na ions rush into the cell, the interior of the cell reaches an electric potential of about 40 rm mV.
A white dwarf star has surface temperature 20 kK. Where is the Wien peak in this star s blackbody curve
A uniform cable of weight whangs vertically downward, supported by an upward force ofmagnitude wat its top end. What is the tension in the cable at its top end
A car speeds along the curved exit ramp of a freeway. The radius ofthe curve is 86 m. A 68 kg passenger holds the arm rest of a car door witha 220 N force to keep from sliding across the front seat of thecar.
A tennis ball rolls off the edge of a tabletop of height 0.850m above the floor and strikes the floor at a point a horizontal distance 1.80 m from the edge of the table. You can ignore air resistance. Find out the time of flight.
A stone is shown at rest on ground. at. The vector shows the weight of the stone. Complete vector diagram showng another tha results in zero net force on the stone. b. What is the conventional name of the vector you have drawn.
Three resistors with values of 4.0 \Omega,7.0 \Omega, and13 \Omega areconnected in series in a circuit with a 6.5 Vbattery. What is the total equivalent resistance? What is the current in each resistor?
A steel cable, ofcross-sectional area 2.70 10-3 m2, is kept under a tension of9.00 103 N. The density of steel is 7860 kg/m3 (this is notthe linear density). At what speed does a transverse wave movealong the cable?
A 2.0-nF parallel plate capacitor with a sheet of mylar (k = 3.1) filling the space between the plates is connected to a 90 V battery. Determine the change in the charge on one of the plates
What is the result of mixing 80g of ice at -20 degrees Celsius, into a 200g of water at 20 degrees Celsius? What fraction of the ice cube melts
A traveling wave in a string of linear 0.01kg per meter isdescribed by the wave function y=0.02m Sin(50rad/m x - 1750rad/st). find the power transmitted by the wave
Standing on the surface of a small spherical moon whose radius is 6.85·104 m, What maximum height above the surface of the moon will the rock reach
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