30.0g of copper pellets are removed from a 300°C oven
and immediately dropped into 110mL of water at 24.0°C in an
insulated cup. What will the new temperature be? Please provide
full solutions.
27.0 g of copper pellets are removed from a 300?C oven and
immediately dropped into 90.0 mL of water at 22.0 ?C in an
insulated cup.
What will the new water temperature be?
Express your answer with the appropriate units.
25.0 g of copper pellets are removed from a 300∘C oven and
immediately dropped into 120 mL of water at 18.0 ∘C in an insulated
cup.
1.)What will the new water temperature be?(in Celsius
26.0 g of copper pellets are removed from a 300∘C oven and
immediately dropped into 120 mL of water at 23.0 ∘C in an insulated
cup.
What will the new temperature be?
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...
Consider a block of copper.
a. Find the density of mobile charges in a piece of copper,
assuming each atom contributes two free electrons.
b. Calculate the average electron velocity in a copper wire
1.00mm in diameter which carries a current of 1.00A.
c. What is the force of attraction between two such wires,
1.00cm apart?
d. If you could somehow remove the stationary positive ions,
what would the
electrical repulsion force be?
e. How many times greater is the...
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.)
What will be the equilibrium temperature when a 275 g block of
copper at 235 ?C is placed in a 135 g aluminum calorimeter cup
containing 875 g of water at 14.0 ?C?
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 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.)