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kari74 [83]
2 years ago
6

Study Island Someone help

Physics
2 answers:
FinnZ [79.3K]2 years ago
7 0
It would be either b or d, but most likely d
Gwar [14]2 years ago
5 0
I would think d because b and c aren’t correct
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Object 2, which has a density of 1.9 g/cm3, since it has more density than freshwater.

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The total resistance of the circuit <br>​
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An airplane engine starts from rest; and 2 seconds later, it is rotating with an angular speed of 300 rev/min. if the angular ac
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The angular acceleration is the variation of angular speed divided by the time:

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And this is constant, so we can use the following equation to calculate the angle through which the engine has rotated:

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2 years ago
7. A block of copper of unknown mass has an initial temperature of 65.4oC. The copper is immersed in a beaker containing 95.7g o
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Answer:

37.34372 kg

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Q=mc\Delta T

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m_1c_1\Delta T_1=m_2c_2\Delta T_2\\\Rightarrow m_2=\frac{m_1c_1\Delta T_1}{c_2\Delta T_2}\\\Rightarrow m_2=\frac{95.7\times 4.18(24.2-22.7)}{0.39(65.4-24.2)}\\\Rightarrow m_2=37.34372\ kg

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