Note that
The specific heat of water is 4.184 J/(g -C)
Let x = the final equilibrium temperature.
Heat loss by the copper is
(155 g)*(0.385 J/(g -C))*(168 - x C) = 59.675(168 -x) J
Heat gain by the water is
(250 g)*(4.184 J/(g-C))*(x - 20.9 C) = 1046(x - 20.9) J
Because there is no heat loss to the surroundings, therefore
59.675(168 - x) = 1046(x - 20.9)
168 - x = 17.5283(x - 20.9)
18.5283x = 534.3415
x = 28.84 °C
Answer: 28.8 °°C nearest tenth)
Answer:
D
Explanation:
Think about like charges meaning the charge is the same.
Which only D has two charges and are the same, positive will repel against positive charge so select D.
Haven't done one like this in awhile but I see no one is answering so I gave it a try. I think it's right but let me know if you see something fishy...
<span>Advantages:
- Easy to repair
- Protect the shore
- Function after minor damage
- Don't disturb the shoreline
Disadvantages:
- Expensive
- Ugly
- Ruin the surfing tourism industry
- Can be displaced easily by waves
- Don't absorb all energy due to gaps between the breakwater</span><span>
</span>