A block made of copper with a mass of 0.90 kg is heated to 800°C, then...

A block made of copper with a mass of 0.90 kg is heated to 800°C, then dropped into 5.00 kg of water at 11°C. What is the total change in entropy (in J/K) of the block-water system, assuming no energy is lost by heat from this system to the surroundings? The specific heat of copper is 387 J/(kg · K), and the specific heat of water is 4,186 J/(kg · K). (Hint: note that dQ = mcdT.)

Expert Solution

genius_generous answered 2 years ago

A rod made of nickel with a mass of 0.80 kg is heated to 850°C, then...

A rod made of nickel with a mass of 0.80 kg is heated to 850°C, then dropped into 7.00 kg of water at 11°C. What is the total change in entropy (in J/K) of the rod-water system, assuming no energy is lost by heat from this system to the surroundings? The specific heat of nickel is 440 J/(kg · K), and the specific heat of water is 4,186 J/(kg · K). (Hint: note that dQ = mcdT.)

A copper block of mass 6.8 kg is originally at a temperature of 18°C and 1...

A copper block of mass 6.8 kg is originally at a temperature of 18°C and 1 atm. It is then heated to a temperature of 69°C without any change in pressure. The specific heat of copper is 387 J/(kg · °C), its density is 8.94 103 kg/m3, and the coefficient of linear expansion is 17 ✕ 10 −6 /°C. (a) Determine the work done by the copper block. J (b) How much heat energy is transferred during this process? J...

A 1.5 kg block of iron at 32 ∘C is rapidly heated by a torch such...

A 1.5 kg block of iron at 32 ∘C is rapidly heated by a torch such that 14 kJ is transferred to it. What temperature would the block of iron reach (assuming the complete transfer of heat and no loss to the surroundings)? If that same amount of heat (14 kJ ) was quickly transferred to a 890 g pellet of copper at 31 ∘C, what temperature would the copper reach before it begins losing heat to the surroundings? Use...

the mass of block A is 80 kg, the mass of block b is 20 kg,...

the mass of block A is 80 kg, the mass of block b is 20 kg, and A is connected to B with the cable and pulley system shown. the pulleys rotate freely, and the cable and pulleys have negligible mass. the coefficient of static fricion between A and the horizontal surface is Ms=0.4, and the coefficient of kinetic friction is Mk=0.3. a) initially, block A is being held stationary and the system is at rest in static equilibrium ....

A block of mass 2 kg and a block of mass 3 kg are sliding on...

A block of mass 2 kg and a block of mass 3 kg are sliding on a frictionless surface. They collide and stick together. Before the collision the first block was travelling at 5 m/s in the positive x direction. After the collision the two blocks are travelling at 6 m/s in the negative x direction. What was the x component of the velocity of the second block before the collision?

A m1 = 1.00-kg aluminum block and a m2 = 6.10-kg copper block are connected by...

A m1 = 1.00-kg aluminum block and a m2 = 6.10-kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle θ = 34.5°) as shown in the figure. (For aluminum on steel, μs = 0.61 and μk = 0.47. For copper on steel, μs = 0.53 and μk = 0.36.) (a) the acceleration of the two blocks and (b) the tension in...

3 Kg mass of water is heated to a temperature of 99.5 C at 1 bar...

3 Kg mass of water is heated to a temperature of 99.5 C at 1 bar of pressure. It is slowly poured into a heavily insulated beaker containing 7.5 Kg of water at a temperature and pressure of 4 C, 1 bar, respectively. The specific heat of the water, an incompressible material is, c = 4.1 KJ/(Kg K). The beaker can be considered to be an adiabatic system. The two water mass’ reach an equilibrium temperature. There is no kinetic...

A 3.00-kg block of copper at 15.0°C is dropped into a large vessel of liquid nitrogen...

A 3.00-kg block of copper at 15.0°C is dropped into a large vessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogen boil away by the time the copper reaches 77.3 K? (The specific heat of copper is 0.092 0 cal/g · °C, and the latent heat of vaporization of nitrogen is 48.0 cal/g.)

A 215 g block of copper at 505.0°C is plunged into 1.000 kg of water (T...

A 215 g block of copper at 505.0°C is plunged into 1.000 kg of water (T = 23.4 °C) in an insulated container. What will be the final equilibrium T in °C of the water and the Cu? (sCu = 0.385 J g-1 °C-1)

A block of mass m1 = 1.31 kg and a block of mass m2 = 11.4...

A block of mass m1 = 1.31 kg and a block of mass m2 = 11.4 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 2 kg. The fixed, wedge-shaped ramp makes an angle of θ = 30.0° as shown in the figure. The coefficient of kinetic friction is 0.24 for both blocks. Determine the acceleration of the blocks.

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