The mass of an electron is approximately 9 × 10-28 grams, while the mass of a neutron is approximately 2 × 10-24 grams. Which of the following is true?
A. The mass of a neutron is approximately 10,000 times the mass of an electron.
B. The mass of a neutron is approximately 1,000 times the mass of an electron.
C. The mass of a neutron is approximately 2,000 times the mass of an electron.
D. The mass of a neutron is approximately 20,000 times the mass of an electron.
Answers
Answer: the mass of a neutron is approximately 2,000 times the mass of an electron
Step-by-step explanation:
- the easiest way to solve this (in my opinion) is to simply divide the mass of a neutron by the mass of an electron
- \(2 x10^{-24} / (9 x10^{-28} )\)
= \((2/9) x10^{-24--28}\)
= \((2/9)x10^{-24+28}\)
≈ \(0.2222x10^{28-24}\)
≈ \(0.2222x10^{4}\)
≈ which is approximately 2222
- so 2222 is approximately 2000 times
- therefore, the mass of a neutron is approximately 2,000 times the mass of an electron
hope this helps :)
Answer:
C. The mass of a neutron is approximately 2,000 times the mass of an electron.
Step-by-step explanation:
Divide the mass of the neutron by the mass of the electron:
\(\implies \sf \dfrac{mass\:of\:neutron}{mass \: of \: electron}=\dfrac{2 \times 10^{-24}}{9 \times 10^{-28}}\)
Rewrite:
\(\implies \sf \dfrac{2}{9} \times \dfrac{10^{-24}}{10^{-28}}\)
\(\textsf{Apply exponent rule} \quad \dfrac{a^b}{a^c}=a^{b-c}:\)
\(\implies \sf \dfrac{2}{9} \times 10^{-24-(-28)}\)
Simplify:
\(\implies \sf \dfrac{2}{9} \times 10^{4}\)
\(\implies \sf 0.\.{2} \times 10^{4} \approx 2000\)
Therefore, the mass of a neutron is approximately 2,000 times the mass of an electron.
Check
\(\begin{aligned}\textsf{mass of neutron} & = \sf \textsf{mass of electron} \times 2000\\\implies \textsf{mass of neutron} & =\sf 9 \times 10^{-28}\times 2000\\& =\sf 9 \times 10^{-28}\times 2 \times 10^3\\& =\sf 18 \times 10^{-28+3}\\& =\sf 18 \times 10^{-25}\\& = \sf 1.8 \times 10^{-24}\\& \approx \sf 2 \times 10^{-24}\end{aligned}\)
Related Questions
T/F of the range, the interquartile range, and the variance, the interquartile range is least influenced by an outlying value in the data set.
Answers
false :) thats ur answer
Researchers examined the bill color (in hue degree) of male and female zebra finches. Here are the summary statistics from the study. How different are male and female zebra finches in bill color? The margin of error for a 95% confidence interval for the difference in mean bill color μF – μM (in hue degree) is ____. Round your answer to the hundreths decimal place.
Answers
Answer:
The answer to this question can be defined as follows:
Step-by-step explanation:
In the question some iformation is missing, which can be defined as follows:
Given:
The value of males:
\(n_1= 59\\s_1= 1.46\\\bar y_1=2.91\\\)
The value of Females:
\(n_2=60\\s_2= 2.48\\\bar y_2=7.42\\\)
Calculating Degrees of Freedom:
\(\bold{ df=\frac{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}{ \frac{1}{n_1-1} (\frac{s_1^2}{n_1})^2+\frac{1}{n_2-1} (\frac{s_2^2}{n_2})^2}}\\\\\\\)
\(=\frac{(\frac{1.46^2}{59}+\frac{2,48^2}{60})^2}{ \frac{1}{59-1} (\frac{1.46^2}{59})^2+\frac{1}{60-1} (\frac{2.48^2}{60})^2}\\\)
\(=9.58 or 95\)
\(\alpha= 1-0.95\\\\\)
\(= 0.05\)
for 95% confidence interval are:
\(\frac{\alpha}{2} = \frac{0.05}{2} = 0.025\)
From its t-distribution table , the value of t has an region of (\(\frac{\alpha}{2} \ \ 0.025\)) for (df=95) in its upper tail.
shall be given by = t {0.025}=1.985
Calculating the margin of Error:
\(M_OE =t_{0.025} \times \sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}\)
\(=1.985\times \sqrt{\frac{1.46^2}{59}+\frac{2.48^2}{60}}\\\\=0.739\)
The difference in mean bill color "\(\mu_2 -\mu_1\)" with 95% confidence intervals:
\(\to (7.42 - 2.91) \pm 0.739\\\\\to 4.51 \pm 0.739\)
Lower limit=3.771
Upper limit = 5.249
What is the value of x? enter your answer in the box. x = cm
Answers
The value of x in the given equation will be 2/5
From the data,
We have to determine the value of x.
The given equation is: 18x-16=-12x-4
For determining the value of x, we will first shift the like terms on one side of the equation.
So, for solving the value of x we will shift the terms containing x and the constant on both sides of the equation.
So, shifting -12x from the right-hand side of the equation to the left-hand side of the equation,
We will get it as:
18x+12x = -4+16
30x=12
Now for solving the value of x we will shift x from the left side of the equation to the right side of the equation.
So, the value of x will be = 12/30 = 2/5
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The correct question may be:
What is the value of x
18x-16=-12x-4
Enter your answer in the box.
Which of the following describes the graph of {x | 2 < x < 2} ?
- just a closed circle on 2
- an open circle on 2 and arrows pointing out
- the entire number line
- no solution
Answers
Answer:
baahsuslskissisudjxnxnx
Please help quickly
4x(3a + b + ab)
Answers
Answer:
you must find value of the variables
Step-by-step explanation:
all rectangles are squares
Answers
Answer: False
All squares are rectangles.
How to Draw a table of values for the first 6 natural numbers.
Answers
To draw a table of values for the first 6 natural numbers, draw the rows and columns and input the numbers 1, 2, 3, 4, 5, and 6 against the variables being compared.
How to draw the tableA table is a visual representation that is used to compare two or more variables. To draw this sort of table for natural numbers, you need to insert 6 rows to contain all of the numbers.
The number of columns that will e drawn depends on the variable or variables that you are checking. The first 6 natural numbers are numbers 1 to 6.
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The area of a rectangular baking sheet is 25 square inches. The base of the sheet is 10 inches. What is the height?
2 and one-half in.
3 in.
3 and one-half in.
250 in.
Answers
Answer:
2 1/2
Step-by-step explanation:
take 25 and divide it by 10 giving you 5/2 but that equals 2.5 and 2.5 equals 2 1/2
2 \(\frac{1}{2}\( in.
Step-by-step explanation:
Initial population in a city was recorded as 4000 persons. Ten years later, this population increased to 8000. Assuming that population grew according to P(t) « ekt, the city population in twenty years turned = (A) 16,000 (B) 12,000 (C) 18,600 (D) 20,000 (E) 14, 680
Answers
The city population in twenty years is 16,000 persons.
To determine the city's population after twenty years, we can use the growth model equation \(P(t) = P(0) * e^(kt)\), where P(t) is the population at time t, P(0) is the initial population, e is the base of the natural logarithm, k is the growth rate constant, and t is the time in years.
Given that the initial population was 4000 persons, we have P(0) = 4000. We can use the information that the population increased to 8000 persons after ten years to find the growth rate constant, k.
Using the formula\(P(10) = P(0) * e^(10k)\) and substituting the values, we get \(8000 = 4000 * e^(10k).\) Dividing both sides by 4000 gives us \(e^(10k) = 2.\)
Taking the natural logarithm of both sides, we have 10k = ln(2), and solving for k gives us k ≈ 0.0693.
Now, we can find the population after twenty years by plugging in the values into the growth model equation: \(P(20) = 4000 * e^(0.0693 * 20) ≈\) 16,000 persons.
Therefore, the city population in twenty years will be approximately 16,000 persons.
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Which of the following explains the relationship between angles B and C?
Answers
Considering that the angles are opposite by the same vertex, the relationship between angles B and C is given by:
Vertical Angles.
What is the relationship between angles B and C?Researching this problem on the internet, it is found that there is a vertex, and angles are diagonal, also called opposite by the same vertex. These angles are also called vertical angles, hence this is what describes the relationship between these angles.
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perform the multiplication and use the fundamental identities to simplify. there is more than one correct form of the answer. (7 − 7 sin(x))(7 7 sin(x))
Answers
The simplified form of (7 - 7 sin(x))(7 + 7 sin(x)) is either 49 - 49 sin^2(x) or 49 cos^2(x). Both forms are equivalent, depending on whether you prefer to express it in terms of sin(x) or cos(x).
To perform the multiplication and simplify the expression (7 - 7 sin(x))(7 + 7 sin(x)), we can apply the formula for the difference of squares, which states that (a - b)(a + b) = a^2 - b^2.
Using this identity, we have:
(7 - 7 sin(x))(7 + 7 sin(x)) = (7)^2 - (7 sin(x))^2
Simplifying further, we obtain:
49 - 49 sin^2(x)
Another way to express this result is by applying the Pythagorean identity sin^2(x) + cos^2(x) = 1. We can rewrite sin^2(x) as 1 - cos^2(x):
49 - 49 sin^2(x) = 49 - 49(1 - cos^2(x))
Simplifying again, we get:
49 - 49 + 49 cos^2(x) = 49 cos^2(x)
Therefore, the simplified form of (7 - 7 sin(x))(7 + 7 sin(x)) is either 49 - 49 sin^2(x) or 49 cos^2(x). Both forms are equivalent, depending on whether you prefer to express it in terms of sin(x) or cos(x).
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Ms Shepard cuts 1/2 of piece of construction paper. She uses 1/6 of piece of paper to make flower. This means that she used 1/12 of sheet of paper to make the flower. True or false
Answers
Answer:
true
Step-by-step explanation:
subject?
Please help!! Picture is provided
Quad. ABCD is a trapezoid.
XY is the median
XY = 12; AB=16
Find DC
Answers
Answer:
DC = 8
Step-by-step explanation:
The median is half the sum of the parallel bases, that is
\(\frac{AB+DC}{2}\) = XY , substitute values
\(\frac{16+DC}{2}\) = 12 ( multiply both sides by 2 to clear the fraction )
16 + DC = 24 ( subtract 16 from both sides )
DC = 8
Answer:
DC = 8
Step-by-step explanation:
The median XY of the trapezoid ABCD is half or the sum of AB and DC.
XY = 1/2 ( AB + DC)
We need to find out DC so we can rewrite this equation isolating DC
XY = (1/2)(AB+DC), multiply both sides by 2
2XY = AB + DC, subtract from both sides AB
2XY - AB = DC, now substitute the given AB = 16 and XY = 12
2* 12 - 16 = DC , using the order of operations rules we multiply first
24 -16 = DC, subtract
8 = DC
HELP
How do you solve percentages?
Answers
A percentage is the same as a decimal
Changing from a decimal to a percentage is done by multiplying the decimal value by 100 and adding % sign.
Example: 0.10 becomes 0.10 x 100 = 10%
Changing from a percent to a decimal, divide by 100 and drop the % sign.
Example: 10% becomes 10/100 = .1 or .10
So if you are solving math problems that include a percent, change to a decimal!
If you need to answer as a percentage, divide the numerator by the denominator for a decimal then multiply by 100!
Write true or false for each of these. Show your working.
a) The 3rd term of the sequence 4n + 2 is 14.
b) The 5th term of the sequence 3n - 8 is 6.
c) The 10th term of the s
sequence 2 - nis 8.
d) The 7th term of the sequence 6 - 2n is -8.
Answers
Step-by-step explanation:
A) 4(3) + 2 = 14
True
B 3(5) - 8 = 7
False
C 2 - 10 = - 8
False
D 6 - 2(7) = 6 - 14 = - 8
True
Complete the following statement. Write your answer as a decimal or whole number
of $100 - $9
Answers
Answer:
9
Step-by-step explanation:
Divide 9 by 100
9 /1000.09Multiply that by 100 and convert to percent
0.09 * 1009%9 is 9% of 100
-Chetan K
Answer: 9%
Step-by-step explanation: it's by 100 so you, it's like 1% of 100 is $1. If that makes sense.
Pleaseeeee helppp. I'm so confused.
Answers
Answer:
x ≤ 2
Step-by-step explanation:
Brainliest pls btw did it help
From the results of an attribute agreement analysis, 2 operators are found to produce different results. What corrective action(s) may be taken? A This is reproducibility error that can be corrected through training. B Use a single expert (capable) for all experimental readings, and then train all other operators to match the ability of the expert prior to releasing the process change. C Check the Operational Definition and revise it if needed. D All of the above. E None of the above.
Answers
All the options (A, B, and C) are correct, and the correct answer is D.
What is Reproducibility error ?
Reproducibility error refers to the variability in measurement results that occurs when different operators or instruments measure the same characteristic or feature. This type of error can arise due to differences in measurement techniques, measurement equipment, or human error.
If the results of an attribute agreement analysis show that two operators are producing different results, there may be several corrective actions that can be taken:
A. Training: Reproducibility errors can be corrected through training. The operators can be trained to follow the same methods and procedures to reduce differences in their results.
B. Single expert: Using a single expert for all experimental readings can ensure consistency in the results. Other operators can be trained to match the ability of the expert before releasing the process change.
C. Operational Definition: Checking the operational definition and revising it if needed can help to ensure that all operators are following the same methods and procedures.
Therefore, all the options (A, B, and C) are correct, and the correct answer is D.
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Aubree mowed 5 lawns in 4 hours. What was her rate of mowing in lawns per hour? Express your answer in simplest form.
Answers
Answer:
1.25 lawns/per hour
Step-by-step explanation:
What is the area, in square feet, of a bedroom with l = 912 feet and w = 1114 feet?
Answers
Answer:
The area is 1,015,968
Step-by-step explanation:
Answer:
1,015,968 (otherwise known as a ridiculously large bedroom lol)
Step-by-step explanation:
912 x 1114 = 1,015,968
Do it on any calculator and it will give you the same thing
I don't know if this was a typo because again that is a ridiculously large bedroom so if it is lemme know and I'll edit my answer
In statistics, the level of measurement is a classification that relates the values that are assigned to variables to each other. In other words, the level of measurement is used to describe information within the values. Psychologist Stanley Smith is known for developing four levels of measurement: nominal, ordinal, interval, and ratio. Distinguish four different levels of measurement and explain each one with a suitable example.
Answers
The four levels of measurement in statistics are nominal, ordinal, interval, and ratio.
1. Nominal: The nominal level of measurement involves categorizing data into distinct categories or groups. Examples include gender (male or female), marital status (single, married, divorced), or types of fruits (apple, orange, banana).
2. Ordinal: The ordinal level of measurement allows for ranking or ordering of data based on a specific criterion. Examples include survey ratings (strongly agree, agree, neutral, disagree, strongly disagree) or educational levels (elementary, middle school, high school, college, postgraduate).
3. Interval: The interval level of measurement not only allows for ranking but also quantifies the intervals or differences between values.Examples include temperature measured in Celsius or Fahrenheit, where the intervals between values are equal but zero does not indicate the absence of temperature.
4. Ratio: The ratio level of measurement possesses all the properties of the interval level but also has a true zero point, which indicates the absence of the measured attribute. Examples include height, weight, or income, where zero represents the absence of the attribute and ratios between values are meaningful (e.g., someone twice as tall as another person).
Nominal: The nominal level of measurement involves categorizing data into distinct categories or groups. In this level, data are simply named or labeled without any quantitative value. Examples include gender (male or female), marital status (single, married, divorced), or types of fruits (apple, orange, banana).
Ordinal: The ordinal level of measurement allows for ranking or ordering of data based on a specific criterion. It indicates relative differences between the values but does not quantify the magnitude of those differences. Examples include survey ratings (strongly agree, agree, neutral, disagree, strongly disagree) or educational levels (elementary, middle school, high school, college, postgraduate).
Interval: The interval level of measurement not only allows for ranking but also quantifies the intervals or differences between values. However, it does not have a true zero point. Examples include temperature measured in Celsius or Fahrenheit, where the intervals between values are equal but zero does not indicate the absence of temperature.
Ratio: The ratio level of measurement possesses all the properties of the interval level but also has a true zero point, which indicates the absence of the measured attribute. It allows for comparisons of magnitude and ratios between values. Examples include height, weight, or income, where zero represents the absence of the attribute and ratios between values are meaningful (e.g., someone twice as tall as another person).
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20 POINTS
someone pls double check me because it says I'm wrong
Question: evaluate 7[h(-2)] -6 if h (x) = 11-x ^2
Answer I got: 14x^2-160
Answers
Answer:
Step-by-step explanation:
your right there wrong
Which is equivalent to 4√3
will mark brainlist if right
Answers
Answer:
The result can be shown in multiple forms.
Exact Form: 4√3 = √48
Step-by-step explanation:
4√3 is equivalent to √48
In triangle EFG, m∠E = 87.4° and m∠F = 43.8°. Determine the measure of the exterior angle to ∠G.
131.2°
114.4°
48.8°
43.6°
Answers
Answer: 48.8
Step-by-step explanation:
87.4+43.8+x=180
Step 1: Simplify both sides of the equation.
87.4+43.8+x=180
(x)+(87.4+43.8)=180(Combine Like Terms)
x+131.2=180
x+131.2=180
Step 2: Subtract 131.2 from both sides.
x+131.2−131.2=180−131.2
x=48.8
Please help me out!!
Answers
Answer: C or B
Step-by-step explanation:
Answer:
its the first answer
Step-by-step explanation:
simplify
6 ÷ 3 + 32 · 4 − 2
Answers
Answer:
128 <33
Step-by-step explanation:
6 ÷ 3 + 32 • 4 - 2 = 128
▪︎▪︎▪︎▪︎▪︎▪︎
Give The measures of the angle that is complementary to the given angle
Answers
Answer:
36°
Step-by-step explanation:
We know that
Sum of two complementary angles is 90°Let the other angle be xSo\( \rm \dashrightarrow \: x + 54 = 90 \\ \rm \dashrightarrow \: x = 90 - 54 \\ \rm \dashrightarrow \: x = 36\)
ou have estimated the relationship between test scores and the student-teacher ratio under the assumption of homoskedasticity of the error terms. The regression output is as follows: Test Score-698.9-2.28 x STR, and the standard error on the slope is 0.48. The homoskedastlalty-only "overall regression Fstatistic for the hypothesis that the regression R is zero is approximately. OA 4.75. OB. 0.96. C. 22.56. D. 1.96.
Answers
To determine the correct answer, we need to calculate the overall regression F-statistic using the given information.
The overall regression F-statistic is calculated as the square of the t-statistic for the slope coefficient. In this case, the t-statistic for the slope coefficient is calculated by dividing the estimated coefficient by its standard error:
t = (coefficient / standard error) = (-2.28 / 0.48) = -4.75
To obtain the F-statistic, we square the t-statistic:
F = t^2 = (-4.75)^2 = 22.56
Therefore, the correct answer is:
C. 22.56
The homoskedasticity-only overall regression F-statistic for the hypothesis that the regression slope is zero is approximately 22.56.
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Measure the length of each leg and the hypotenuse.
m∠ABC = 45° m∠ACB = 45°
Question:
AB =? Units
AC =? Units
BC =? Units
Answers
The hypotenuse, AC, is equal to the length of a leg multiplied by √2. , AC = x√2 units.
To summarize:
AB = BC = x units
AC = x√2 units
In a right triangle where one angle is 45°, we can determine the lengths of the legs and the hypotenuse using the properties of a 45-45-90 triangle.
In a 45-45-90 triangle, the two legs are congruent, and the hypotenuse is equal to the length of a leg multiplied by √2.
Let's assume the length of one leg is "x" units.
Since m∠ABC = 45° and m∠ACB = 45°, we can conclude that AB and BC are congruent. So, AB = BC = x units.
The hypotenuse, AC, is equal to the length of a leg multiplied by √2. Therefore, AC = x√2 units.
To summarize:
AB = BC = x units
AC = x√2 units
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Draw a diagram to show that (2x+5)(x+3) is equivalent to 2x^2 + 11x + 15?
Answers
Answer:
Use a punnet square type of diagram
Step-by-step explanation:
