All categories

4 years ago

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]4 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]4 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 = $\frac{2}{40}=\frac{1}{20}=0.05$

You might be interested in

A block of gelatin is 120mm by 120mm by 40mm whrn unstressed. A force of 49N is applied tangentially to the upper surface causin

Inessa05 [86]

Answer:

The shearing stress is 10208.3333 Pa

The shearing strain is 0.25

The shear modulus is 40833.3332 Pa

Explanation:

Given:

Block of gelatin of 120 mm x 120 mm by 40 mm

F = force = 49 N

Displacement = 10 mm

Questions: Find the shear modulus, Sm = ?, shearing stress, Ss = ?, shearing strain, SS = ?

The shearing stress is defined as the force applied to the block over the projected area, first, it is necessary to calculate the area:

A = 40*120 = 4800 mm² = 0.0048 m²

The shearing stress:

$Ss=\frac{F}{A} =\frac{49}{0.0048} =10208.3333Pa$

The shearing strain is defined as the tangent of the displacement that the block over its length:

$SS=tan\theta =\frac{Displacement}{L} =\frac{10}{40} =0.25$

Finally, the shear modulus is the division of the shearing stress over the shearing strain:

$Sm=\frac{10208.3333}{0.25} =40833.3332Pa$

6 0

4 years ago

The basic skill of advancing and controlling the ball to your feet while running.

Inessa05 [86]

<span>Direct Free Kick
Pass
<span>and Dribbling</span></span>

3 0

3 years ago

1. What happens to particle spacing when temperature increase, What we call this process?

enot [183]

Answer:

Particle spacing increases and it's called evaporating

5 0

4 years ago

Two vectors, A and B, have magnitudes of 10 and 15. The cross product of these vectors has magnitude 32. What is the angle betwe

zalisa [80]

Answer:

The Angle between the vector A and B is 12.32°

Explanation:

Given data

|A×B|=32

|A|=10

|B|=15

To find

Angle α

Solution

From Cross product properties we know that

$|A*B|=|A||B|Sin\alpha \\32=(10)(15)Sin\alpha\\Sin\alpha=32/150\\\alpha =Sin^{-1}(32/150)\\\alpha =12.32^{o}$

The Angle between the vector A and B is 12.32°

7 0

3 years ago

Read 2 more answers

A student sets up an experiment to determine the inertial mass of a cart. The student has access to the following measurement eq

wlad13 [49]

Answer:

The correct answers are a and d

Explanation:

In this experiment it can be analyzed using Newton's second law

F = m a

m = F / m

The outside is supplied by the spring balance and is constant, therefore the acceleration of the system is also constant.

The acceleration can be found with the kinematic equations

x = v t + ½ a t²

As we start from rest the initial speed is zero

a = 2 x / t²

Therefore we need the reading of position and time.

Finally, the relationship between the balance reading and this acceleration of the mass of the system

Let's analyze the answers

a) True. It is one of the necessary quantities

b) False. With the equipment we cannot measure the speed directly

c) false. Acceleration is calculated

d) true. It is the other magnitude necessary for the calculation.

The correct answers are a and d

7 0

3 years ago

Read 2 more answers