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Tema [17]
2 years ago
7

10 Points!

Physics
2 answers:
Pavlova-9 [17]2 years ago
7 0
<h3><u>Answer;</u></h3>

The Average kinetic energy of the molecules increases

<h3><u>Explanation;</u></h3>
  • <em><u>Kinetic energy is the energy that causes motion of molecules.  When a pot of water is subjected to heat the temperature of water rises. As the temperature rises, the kinetic energy of the molecules also increases and the molecules of water vibrates more fast.</u></em>
  • <em><u>Temperature is a measure of the average kinetic energy, therefore as the water in the pot heats up the average kinetic energy rises. Increase in the kinetic energy increases the vibration of water molecules until the water boils. </u></em>
Zinaida [17]2 years ago
4 0
The kinetic energy gets faster as the atoms move faster.  Atoms move faster when heat is applied and more slower when they cool.
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The specification limits for a product are 8 cm and 10 cm. A process that produces the product has a mean of 9.5 cm and a standa
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Answer:

The value of Cpk is 0.83.

Explanation:

Given that,

Upper specification limits = 10 cm

lower specification limits = 8 cm

Mean = 9.5

Standard deviation = 0.2 cm

We need to calculate the process capability

Using formula of Cpk

Cpk=min(\dfrac{USL-mean}{3\times SD}, \dfrac{mean-LSL}{3\times SD})

Put the value into the formula

Cpk=min(\dfrac{10-9.5}{3\times0.2}, \dfrac{9.5-8}{3\times0.2})

Cpk=min(0.83,2.5)

Cpk=0.83

Hence, The value of Cpk is 0.83.

4 0
2 years ago
A uranium ion and an iron ion are separated by a distance of =61.10 nm. The uranium atom is singly ionized; the iron atom is dou
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Answer:

Explanation:

Charge on uranium ion = charge of a single electron

= 1.6 x 10⁻¹⁹ C

charge on doubly ionised iron atom = charge of 2 electron

= 2 x 1.6 x 10⁻¹⁹ C = 3.2 x 10⁻¹⁹ C

Let the required distance from uranium ion be d .

force on electron at distance d from uranium ion

= 9 x 10⁹ x 1.6 x 10⁻¹⁹ / r²

force on electron at distance 61.10 x 10⁻⁹ - r from iron  ion

= 9 x 10⁹ x 3.2 x 10⁻¹⁹ / (61.10 x 10⁻⁹ - r )²

For equilibrium ,

9 x 10⁹ x 1.6 x 10⁻¹⁹ / r² = 9 x 10⁹ x 3.2 x 10⁻¹⁹ / (61.10 x 10⁻⁹ - r )²

2 d² = (61.10 x 10⁻⁹ - r )²

1.414 r = 61.10 x 10⁻⁹ - r

2.414 r = 61.10 x 10⁻⁹

r = 25.31 nm .

4 0
3 years ago
Why does a round pizza come in a square box? Random questions
denpristay [2]

Answer:

because they dont know how big it willactually be? idk

or so deep dish can fit too

4 0
2 years ago
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An ideal parallel-plate capacitor consists of a set of two parallel plates of area Separated by a very small distance 푑. This ca
dolphi86 [110]

Answer:

doubled the initial value

Explanation:

Let the area of plates be A and the separation between them is d.

Let V be the potential difference of the battery.

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Now the battery is disconnected, it means the charge is constant.

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The capacitance of the parallel plate capacitor is inversely proportional to the distance between the plates.

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the new energy stored

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The energy stored in the capacitor is doubled the initial amount.

8 0
3 years ago
A camera has a single converging lens with a fixed focal length f. (a) How far should the lens be from the film (or in a present
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Answer:

a) Due to the characteristic that a converging lens focuses light rays from infinity and parallel to its main axis. Therefore, the lens should be placed at a distance "f" from the film, in this way it will form the image of the object placed at infinity in said film.

b) Since the converging lens produces an image of an object placed at a distance of 2f, the lens must be placed at the same distance (2f), so that this object that is placed at a distance of 2f is focused.

Explanation:

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