A monatomic ideal gas is heated while at a constant volume of 1.00 * 10^-3 m^3, using a 10 watt heater. The pressure of the gas increases by 5.0 * 10^4 Pa. How long was the heater on?
In: Physics
Say 5% of circuit boards tested by a manufacturer are defective. Let Y be the number of defective boards in a random sample of size n = 25.
What kind of random variable is Y ? In particular, write Y ~Distribution(p, n), where you fill in the correct distribution name and parameters p and n.
Determine P (Y ≥ 5).
DetermineP(1≤Y ≤4).
What is the probability that none of the 25 boards are defective?
In: Math
1. Rejecting the null hypothesis that the population slope is equal to zero or no relationship and concluding that the relationship between x and y is significant does not enable one to conclude that a cause-and-effect relationship is present between x and y. Explain why.
2. Discuss the statistics that must be evaluated when reviewing the regression analysis output. Provide examples of what the values represent and an explanation of why they are important.
In: Math
What to do
This assignment is going to be pretty simple - we're just going compute frequency counts of certain colors in certain ranges (Histogram of the image).
Because there is no natural way of segregating RGB color ranges, we usually do this color by color. So you'll be computing frequency counts for individual color components individually.
The expectation is that you will write a function as described by a python function signature below (while you are free to do whatever you want, I think doing future parts of the assignment will be easier if the code is structured this way) -
Think about what happens when one is comparing images of different sizes -
To make sure similar images have similar histograms regardless of image size, it is good to normalise frequencies by dividing each frequency count by the total number of pixel in the image.
In: Computer Science
How much heat (in kj) is needed to convert 866g of ice at -15*C to steam at 146*C? (Note: The specific heat of ice is 2.03J/g*C and the specific heat of steam is 1.99J/g*C. Delta fus for H20 is 6.01 kj/mol and Hvap is 40.79kj/mol)
In: Chemistry
As everybody knows that Black objects are black because almost all the light that falls on them is absorbed into the material. Little or no light is reflected back toward our eyes, therefore we see black.
It is also known that, since black objects absorbs all the light they ultimately become heated-up..!
If we see the snow in visible light, It appears to be White. But in the Infrared, it appears to be black. Does that mean that the Snow will feel warm in Infrared lights?
In: Physics
Describe two real life companies that you believe has a "High Fixed Cost Structure" and one that you believe has a "Low Fixed Cost Structure". Explain why you came to this conclusion. Then describe what would happen to your companies' net income if
a) in one year they were able to double their sales
b) in one year their sales would drop by 50%.
In: Accounting
Select/identify 20 programming languages
1)Draw a graph, a chart or a table that shows the
history/timeline of the development of the chosen 20
programming languages over years.
2)Identify the domain (area) that each one of the 20 programming
languages is used in. The well known
programming domains are:
a. Scientific Applications
b. Business Applications
c. Artificial Intelligence
d. Systems Programming
e. Web Software
In: Computer Science
Calculate the pH during the titration of 25.00 mL of 0.1000 M LiOH(aq) with 0.1000 M HI(aq) after 24.2 mL of the acid have been added. Explain.
In: Chemistry
In: Finance
|
Goods & Services |
Price 2014 |
Quantity 2015 |
Price 2015 |
Quantity 2015 |
|
Food |
$10 |
10,000 |
$8 |
12,000 |
|
Clothing |
$60 |
4,000 |
$40 |
5,000 |
|
Health Care |
$2,500 |
500 |
$4,000 |
600 |
In: Economics
Consider a GaAs p-n junction diode. The p-type acceptor is Zn, with a dopant concentration of 2 x 10^17 cm^-3 and the n-tpye donor is Si, with a dopant concentration of 5 x 10^16 cm^-3. Working at temp= 300 K.
a) Calculate the Fermi Level in the p-type material. Assume that the hole density is equal to the density of the p-dopant atoms.
b) Performing the same calculation for the n-type material gives a fermi level of 1.363 eV. What is the zero-bias built- in potential at the junction?
c) Calculate the width of the depletion zone for this case
In: Physics
im getting this
Error: Main method not found in class Tuple, please define the
main method as:
public static void main(String[] args)
or a JavaFX application class must extend
javafx.application.Application
please modify the code
import java.io.InvalidClassException;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
public class Tuple {
private List<Object> fields; // stores the fields(s) of the tuple in the original sequence
public Tuple(List<Object> fields) throws
InvalidClassException {
this.fields = fields;
}
// gets the fields of this tuple
public List<Object> getFields() {
return fields;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Tuple tuple = (Tuple) o;
return Objects.equals(fields, tuple.fields);
}
@Override
public int hashCode() {
return Objects.hash(fields);
}
@Override
public String toString() {
return "Tuple{" +
"fields=" + fields +
'}';
}
}
In: Computer Science
Research one attack of transport layer of TCP/IP model
and answer the following questions
what was the attack?
what layer the attack is done
describe the attack what it is
what does attack hope to achieve
Relate to CIA train
what network vulnerabilities does attack take advantage of
what can be done to mitigate the attack
please attach the reference with answer
In: Computer Science
The Ka’s for H2SeO2 are K1 = 2.7 x 10-3 K2 = 2.5 x 10-7 Calculate the pH of a solution formed when 30.0 mL of 0.25 M KSeO3 is mixed with a) 1.5 mL of 0.20 M KOH b) 20.0 mL of 0.25 M HCl c) 25.0 mL of 0.20 M K2SeO3
I know how to calculate pH's however, I do not know when to use K1 vs K2, can you explain please?
In: Chemistry