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KengaRu [80]
3 years ago
15

An empty paper cup is the same temperature as the air in the room. A student fills the cup with cold water. Which of the followi

ng describes how thermal energy is transferred?
O Thermal energy is transferred from the cold water to the cup until they are at the same temperature.
O Thermal energy is transferred from the cup to the cold water until they are at the same temperature.
O Thermal energy is transferred from the cup to the cold water until the cup has no more thermal energy
O Thermal energy is not transferred between the cup and the cold water.
Physics
1 answer:
Vika [28.1K]3 years ago
7 0

Answer:

C

Explanation:

It is

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Hope this helps :)

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Read 2 more answers
Your electric drill rotates initially at 5.21 rad/s. You slide the speed control and cause the drill to undergo constant angular
RUDIKE [14]

Answer:

The drill's angular displacement during that time interval is 24.17 rad.

Explanation:

Given;

initial angular velocity of the electric drill, \omega _i = 5.21 rad/s

angular acceleration of the electric drill, α = 0.311 rad/s²

time of motion of the electric drill, t = 4.13 s

The angular displacement of the electric drill at the given time interval is calculated as;

\theta = \omega _i t \ + \ \frac{1}{2}\alpha t^2\\\\\theta = (5.21 \ \times \ 4.13) \ + \ \frac{1}{2}(0.311)(4.13)^2\\\\\theta = (21.5173 ) \ + \ (2.6524)\\\\\theta =24.17 \ rad

Therefore, the drill's angular displacement during that time interval is 24.17 rad.

6 0
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If the PLATE SEPARATION of an isolated charged parallel-plate capacitor is doubled: A. the electric field is doubled
mash [69]

Explanation:

The electric field of an isolated charged parallel-plate capacitor is given by :

E=\dfrac{q}{A\epsilon_o}........(1)

Where

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It is clear from equation (1) that the electric field of a parallel plate capacitor is directly proportional to the charge on the plate and inversely proportional to the area of cross section of a plate.

So, the correct option is (E) i.e. "none of the above".

5 0
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