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AnnZ [28]
2 years ago
8

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

Physics
2 answers:
AVprozaik [17]2 years ago
8 0

Answer:

The point estimate of the mean of the sample is  32.3 , and the point proportion of the defective units is  0.05 .

Explanation:

Yuliya22 [10]2 years ago
7 0

Answer: The mean of the samples is 32.325.

Proportion of the defective unit is =\frac{2}{40}=\frac{1}{20}=0.05

Explanation:

The point estimate of the mean of the sample:

First calculate the mean of the 40 samples:

\frac{\text{Sum of all the samples}}{\text{Number of observations}}

\frac{1,293}{40}=32.325

The mean of the samples is 32.325.

Defected pieces in the samples whose life span is less than the 26 days = 2

Proportion of the defective unit is =\frac{2}{40}=\frac{1}{20}=0.05

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An engineer is designing a process for a new transistor. She uses a vacuum chamber to bombard a thin layer of silicon with ions
adelina 88 [10]

Answer:

E=5.7\times 10^{-3}\ V/m

Explanation:

Given that

m_p=5.18\times 10^{-26}\ kg

re= 46 cm

Vp= 180 m/s

We know that

E=\dfrac{\Delta V}{r}

\Delta V=\dfrac{1}{4}\dfrac{m_pv_p^2}{e}

So

E=\dfrac{1}{4}\dfrac{m_pv_p^2}{e.r_e}

Now by putting the all given values in the questions

E=\dfrac{1}{4}\times \dfrac{5.18\times 10^{-26}\times 180^2}{1.6\times 10^{-19}\times 0.46}

E=5.7\times 10^{-3}\ V/m

So the average electric field is E=5.7\times 10^{-3}\ V/m.

6 0
2 years ago
The temperature, T, of a gas is jointly proportional to the pressure P of the gas and the volume V occupied by the gas. Use C as
AnnZ [28]

Answer:

T=C*P*V

Explanation:

It is said that a variable - let's call 'y' -, is proportional to another - let's call it 'x' - if x and y are multiplicatively connected to a constant 'C'. It means that their product (x*y) can be always equaled to the constant 'C' or their division (\frac{x}{y}) can be always equaled to 'C'. The first case is the case of the inverse proportionality: It is said that x and y are inversely proportional if

x*y=C

The second case is the case of the direct proportionality: It is said that x and y are directly proportional if

\frac{x}{y} =C : x is directly proportional to y.

or

\frac{y}{x} =C : y is directly proportional to x.

Always that any text does not specify about directly or inversely proportionality, it is assumed to mean directly automatically.

For our case, we are said that the temperature T is proportional to the pressure P and the volume V (we assume that it means directly); it is a double proportionality but follows the same rules:

If T were just proportional to P, we would have:

\frac{T}{P} =C

If T were just proportional to V, we would have:

\frac{T}{V} =C

As T is proportional to both P and V, the right equation is:

\frac{T}{P*V}=C

In order to isolate the temperature, let's multiply (P*V) at each side of the equation:

\frac{T}{P*V}*(P*V)=C*(P*V)\\T=C*P*V

3 0
2 years ago
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Margarita [4]
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It's mostly <em>convection</em> ... hot air and steam rising from the soup to your hand.

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Therefore, it is the tension in the string that causes the centripetal acceleration of the puck

Hope I helped!! xx
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