Two stars 19 light-years away are barely resolved by a 63 cm (mirror diameter) telescope. 1ly=9.461×1015m.How far apart are the stars? Assume λ = 550 nm and that the resolution is limited by diffraction.

d=_____? m

How much heat (in kJ) is required to warm 10.0 g of ice, initially at -10.0 ∘C, to steam at 111.0 ∘C? The heat capacity of ice is 2.09 J/g⋅∘C and that of steam is 2.01 J/g⋅∘C.

3)Describe the origins and development of the 13 British colonies in North America. Explain the factors behind the foundation of the colonies. Why were some people leaving Britain? What attracted them to North America? What problems did the British colonists face and how were the colonies able to survive? What were some of the main social, cultural, and economic differences between the various colonies? Give specific examples. (couldn't find history in the subjects).

Racism, juries, and interactions: In a study of racism, Nail, Harton and Decker (2003) had participants read a scenario in which a police officer assaulted a motorist. Half the participants read about an African American officer who assaulted an European American motorist, and half read about a European American officer who assaulted an African American motorist. Participants were categorized based on political orientation: liberal, moderate, or conservative. Participants were told that the officer was acquitted on assault charges in state court but found guilty of violating the motorist’s rights in federal court. Double jeopardy occurs when an individual is tried twice for the same crime. Participants were asked to rate, on a scale of 1-7, the degree to which the officer had been placed in double jeopardy by the second trial. The researchers reported the interaction as F= (2,58)=10.93, p<0.0001. The means for the liberal participants were 3.18 for those who read about the African American officer and 1.91 for those who read about the European American officer. The mean for the moderate participants were 3.50 for those who read about the African American officer and 3.33 for those who read about the European American officer. The means for the conservative participants were 1.25 for those who read about the African American officer and 4.62 for those who read about the European American officer.

a. Draw a table of cell means that includes that actual means for this study.

b. Do the reported statistics indicate that there is a significant interaction? If yes, describe the interaction in your own words.

c. Draw a bar graph that depicts the interaction. Include lines that connect the tops of the bars and show the pattern of the interaction.

d. Is this quantitative or qualitative interaction? Explain

e. Change the cell mean for the conservative participants who read about an African American officer so that this is now a quantitative interaction.

f. Draw a bar graph that depicts the patter that includes the new cell means

g. Change the cell means for the moderate and conservative participants who reads about an African American officer so that there is now no interaction.

h. Draw a bar graph that depicts the pattern that includes the new cell means.

A lens system consists of two lenses 14.0 cm apart. The first lens is convex (converging) and has a focal length of 6.72 cm. An object is placed 3.29 cm in front of the first lens and produces an image 7.00 cm behind the second lens.
Q1:What is the focal length of the second lens?
A:5.215 cm

Q2:What is the magnification of the final image?

A2:

Please provide A2 and show all work, I already have the correct answer to Q1(5.215cm)

Describe "juke-joints" and honky "tonks". What is the difference between them? What dances came from them? What do we have in today's social dance environment that parallels these phenomena's of the early 20th Century dance scene? What is the difference today? (it is a dance subject)

How do you think visual messages have been influential in history so far. Bring an example and try to explain couple of reasons to support your argument.

What are the relationships between project cost, risk, and procurements?

please use c

write a program that utilizes pipes for Interprocess Communication (IPC). The program will create a pipe(s) to allow the parent and child to communicate.

The parent process will generate a random number based on the pid of the child process created. The parent will send this random number to the child and wait for a response (Received) from the child. After receiving a response from the child, the parent will send another message to the child telling the child it is okay to end. This message should be “BYE”.

The child process should wait to receive the random number from the parent. After receiving the random number, it should send a response back to the parent. This message should be “Received”. The child should then wait for another message (BYE) from the parent indicating it is okay for the child to end.

Both processes should print to standard output the message it will write to the pipe and any message it receives from the pipe. Each message printed should be the process (“Parent” or “Child”) and if the message will be sent to the pipe or if it was received by the pipe. Example output might be similar to this:

Parent sending to pipe: 784392

Child received from pipe: 784392

Child sending to pipe: Received

Parent received from pipe: Received

Parent sending to pipe: BYE

Child received from pipe: BYE

Make sure you follow good programming practices, such as the use of functions, closing file descriptors as soon as not needed, in-line comments, error checking, freeing dynamic memory, etc.

use any programming language that allows the creation of new processes similar to the fork() system call in C and the use of pipes similar to the pipe() system call in C.

200 words to answer:

What are the different types of biases that Latino women face? How does their Tightrope

     problem differ from that of black women? Give an example.

Why is “Earned Value Management” more appropriate to use with projects than for other investments?

Does LASSO select the Prinicpal components according to the ranks based on variance explained by it? If the sequence to select Prinicipal components is different from the order of Prinicipal components ranked by variance, what does this indicate? Can you think of other pros (apart from removing collinearity) and cons of preprocessing predictors with PCA in regression models?

On July 2, Eagle Ltd. shipped merchandise costing $360,000 on consignment to Goldfinch Stores. Eagle paid freight costs of $10,000. Upon sale, Goldfinch will receive a 12% commission. At the end of the month, Goldfinch notifies that 50% of the merchandise has been sold for $560,000, and send Eagle the money via electronic transfer.

Prepare the journal entries for Eagle Ltd. to account for this consignment in the month of July.

Liam and Katano formed a partnership to open a sushi restaurant by investing $110,000 and $120,000, respectively. They agreed to share profit based on an allocation to Liam of an annual salary allowance of $165,000, interest allowance to both Liam and Katano equal to 12% of their beginning-of-year capital balance, and any balance based on a 1:3 ratio, respectively. At the end of their first year, December 31, 2020, the Income Summary had a credit balance of $45,000. Liam withdrew $22,000 during the year and Katano $39,000.

Required:
1. Determine each partner’s share if the first-year profit was $45,000. Prepare the entry to close the Income Summary on December 31, 2020. (Leave no cell blank. Enter "0" when the answer is zero. Negative answers should be indicated by a minus sign.)

2. Calculate the balance in each partner’s capital account at the end of their first year. (Negative answers (i.e. debit account balances) should be indicated by a minus sign.)