Energy absorbed as heat and change in entropy
Find (a) the energy absorbed as heat and (b) the change in entropy of a 4.60 kg block of copper whose temperature is increased reversibly from 46.3°C to 95.5°C. The specific heat of copper is 386 J/kg·K.
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What weight of pure H2SO4 is present in each liter of concentrated sulfuric acid whose density is 1.86 g/ml and whichcontains 98% by weight H2SO4?
A uniform electric field of magnitude 339 N/C is directed along the +y-axis. A 5.00 µC charge moves from the origin to the point (x, y) = (-30 cm, -39 cm). (a) What is the change in the potential energy associated with this charge?
A 1.00-kg object is observed to accelerate at 10.0 m/s2 in a direction 30.0 north of east. The force F2 acting on the object has a magnitude of 5.00 N and is directed north. Determine the magnitude and direction of the force F1 acting on the objec
The maximum temperature is 2500 K. Determine the thermal efficiency and the mean effective pressure for the cycle.
The turpentine and the aluminum cylinder are then slowly warmed together to 91.0°C. (The average linear expansion coefficient for aluminum is 2.4 x10^-5/°C, and the average volume expansion coefficient for turpentine is 9.0 x10^-4/°C.)
The maximum temperature is 1200 K and the minimum temperature is 290 K. The minimum and maximum pressures are 95 and 380 kPa, respectively. Calculate the power output of the turbine.
When the ball hits the wall, the horizontal component of its velocity is reversed; the vertical component remains unchanged. (Ignore any effects due to air resistance.) (a) Where does the ball hit the ground? m (away from the wall)
Weigh out about 10 g of NaOH pellets and transfer them to 1 L bottle (preferably plastic as NaOH etches glass). Add about 600 mL of deionized water and mix until the NaOH dissolves. Add another 350 mL of deionized water and mix again.
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