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pychu [463]
3 years ago
9

8.

Physics
1 answer:
Nutka1998 [239]3 years ago
5 0

Answer:

=-21.43

Explanation:

::::::::::::::::::

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What type of device is a car engine?
Marianna [84]
<h3><u>Answer;</u></h3>

B.A heat engine that uses work to move heat

<h3><u>Explanation;</u></h3>
  • A heat engine involves a thermodynamic process that converts the heat supply in it into mechanical work.
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7 0
4 years ago
The chief by 3 3/4 kg of Apple's 7 1/4 kilograms of peers and 10 1/8 kilograms with orange about how many kilograms of fruit did
WARRIOR [948]
SOLUTION:

Total amount of fruit = Total amount of apples + Total amount of pears + Total amount of oranges

Total amount of fruit = 15 / 4 + 29 / 4 + 81 / 8

Total amount of fruit = 30 / 8 + 58 / 8 + 81 / 8

Total amount of fruit = 169 / 8

Total amount of fruit = 21.125 kg

ANSWER:

Therefore, the chief bought 21.125 kg of fruit all together.

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7 0
3 years ago
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Causing a collision while speeding puts points on your license
Marizza181 [45]
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5 0
3 years ago
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At which temperature do the lattice and conduction electron contributions to the specific heat of Copper become equal.
sp2606 [1]

Answer:

At 3.86K

Explanation:

The following data are obtained from a straight line graph of C/T plotted against T2, where C is the measured heat capacity and T is the temperature:

gradient = 0.0469 mJ mol−1 K−4 vertical intercept = 0.7 mJ mol−1 K−2

Since the graph of C/T against T2 is a straight line, the are related by the straight line equation: C /T =γ+AT². Multiplying by T, we get C =γT +AT³ The electronic contribution is linear in T, so it would be given by the first term: Ce =γT. The lattice (phonon) contribution is proportional to T³, so it would be the second term: Cph =AT³. When they become equal, we can solve these 2 equations for T. This gives: T = √γ A .

We can find γ and A from the graph. Returning to the straight line equation C /T =γ+AT². we can see that γ would be the vertical intercept, and A would be the gradient. These 2 values are given. Substituting, we f ind: T =

√0.7/ 0.0469 = 3.86K.

4 0
3 years ago
When an 8-V battery is connected to a resistor, 2 A of current flows in the resistor. What is the resistor's value? A. 2 ohms B.
SVEN [57.7K]
Its B 4ohM
As v =I /R
R=V/I
6 0
4 years ago
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