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2 years ago

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Resistors labeled 100 Ω have true resistances that are between 80 Ω and 120 Ω. Let X be the mass of a randomly chosen resistor.

The probability density function a. What proportion of resistors have resistances less than 90 Ω? b. Find the mean resistance.

1 answer:

STatiana [176]2 years ago

5 0

Answer:

See explanation for step by step explanations.

Explanation:

Let X be the mass of a randomly selected resistor

The probability density function is given as

, 80<x<120

=0, otherwise

a) By using the given pdf we have to find the probability of the resistors having resistance less than 90

=

=

=0.0625

the probability of the resistors having resistance less than 90 is 0.0625

Step 2 of 4<

/p>

b) we have to find the mean resistance

Mean=

=

=

=106.67

The mean resistance is 106.67

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Answer:

$2.09\ \text{m/s}$

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As the momentum is conserved in the system we have

$mu_1+2mu_2=3mv\\\Rightarrow v=\dfrac{u_1+2u_2}{3}\\\Rightarrow v=\dfrac{3.46+2\times 1.4}{3}\\\Rightarrow v=2.09\ \text{m/s}$

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2 years ago

A 128 gram Radium-226 sample with a half-life of 2.25 billion years is found. How many grams will remain after two half-lives?

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Answer:

Option B. 32 g

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From the question given above, the following data were obtained:

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2 years ago

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Igoryamba

Answer:

The horizontal velocity is $v = 9.2 m/s$

Explanation:

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Answer

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