Total # Posts: 478
1. A photographer uses a camera lens with focal length of 50.0 mm to photograph a tree that is 4.60 m tall. She wishes to fill her 24.0-mm slide with the tree. (a) How far from the lens should the film be? 1/o + 1/24 = 1/50 600 + 25o = 24o o = -600/13 or -46.15 mm Therefore, ...
December 1, 2016
7. What two answers are reasons that Congress decided the election of 1800? a.)Based on the outcome, it was mandated by the U.S. Constitution.* b.)The popular vote was a tie. c.)No candidate won the electoral vote.*
November 21, 2016
Why did Adams increase the size of the American Navy? a.) He wanted to prepare for an all-out war on Britain. b.) He hoped it would deter more attacks by French ships. * Is this right?
November 21, 2016
Joy knits a square blanket that has an area of 1,500 square inches. What is the approximate length of each side of the blanket? A.) 16 inches B.) 27 inches C.) 39 inches * D.) 42 inches Is this correct?
November 17, 2016
For each pair of compounds, predict which species will have the higher molar entropy at 298 K and 1 bar. Be sure to state your reasons for your choice. 1. N2(g) vs. F2(g) 2. ICl (g) vs. BrF(g) 3. 6Li(s) vs. 7Li(s
October 25, 2016
Thank you. By any chance can you help me with this one too? What was the impact of the Olive Branch Petition? A.) It declared independence from Britian for the first time. B.) It failed to being about peace and only angered King George III.* C.) It caused there to be a brief ...
October 12, 2016
Which of the following best describes how the Intolerable Acts affected the American colonies? A.) The acts caused the colonies to set up their own militia to serve in times of emergency. B.) The acts caused the colonies to call for the First Continental Congress. C.) The acts...
October 12, 2016
1.) Why is it important to have a quiet study space? It is easier to concentrate in a quiet space, and concentration is needed to learn. * It is easier to leave all your study material in a quiet study space so you can find it. A quiet study space prevents incorrect ...
October 8, 2016
Meg's pension plan is an annuity with a guaranteed return of 3% per year (compounded quarterly). She would like to retire with a pension of $30,000 per quarter for 5 years. If she works 25 years before retiring, how much money must she and her employer deposit each quarter...
September 14, 2016
Ok thanks for the help but I actually managed to solve it on my own which was far quicker and actually i had been searching for over an hour now. But, once again many thanks and its been a pleasure :)))
August 10, 2016
26. identify the degree comparison for the underlined word the most original idea was suited by a pair of tenth graders (Most original is underlined) A. Positive B. comparative c. superlative d. none of the above I think it is c identify the degree of comparison for the ...
May 19, 2016
Which of the following sentences from "Five Hours to Simla" best supports the story's theme about the clash between modernization and traditional life? A:"After the first cacophony of screeching brakes and grinding gears, there followed the comparatively ...
May 17, 2016
ATTENTION TEACHERS AND STUDENTS
Mrs. Matthew called me stupid for not knowing the answer to this so...May I please get some proper help? The cost for a business to make greeting cards can be divided into one-time costs (e.g. a printing machine) and repeated costs (e.g. ink and paper). Suppose the total cost ...
April 8, 2016
The cost for a business to make greeting cards can be divided into one-time costs (e.g. a printing machine) and repeated costs (e.g. ink and paper). Suppose the total cost make 500 cards is $1,100, and the total cost to make 650 cards is 1,400. What is the total cost to make 1...
April 8, 2016
1. Abraham Lincoln cause four states to join the confederacy by _____ A. Declaring War B. Firing on Fort Sumter C. Emancipating the enslaved people D. Calling for troops*** 2. What Confederate capital was only about 100 miles from Washington D.C.? A. Richmond, Virginia*** B. ...
April 8, 2016
Which of the following can be expected to occur as climate change continues on Earth? A. Decreased melting of sea ice B. Decreased migration of pests and pathogens*** C. Increased freshwater sources D. Increased coastal flooding
April 7, 2016
1. The admission of Missouri as a slave state was controversial in the Senate because... A. The senate was pro-slavery B. It would create sectionalism*** C. It would upset the balance D. The senate was anti-slavery
April 6, 2016
A 1,500-kg car stands on a square platform, and a 25-kg boy stands on another square platform. These platforms are the two caps of a large oil-filled container. What must be the ratio of the platform sides (large/small) for the boy to gently lift the car?
March 26, 2016
Simplifying 4x2y + 12xy2 + 9y3 Reorder the terms: 12xy2 + 4x2y + 9y3 Factor out the Greatest Common Factor (GCF), 'y'. y(12xy + 4x2 + 9y2) Factor a trinomial. y((2x + 3y)(2x + 3y)) Final result: y(2x + 3y)(2x + 3y)
March 2, 2016
If a rectangular prism has a surface area of 198 square feet, a height of 6 feet and a lateral surface area of 144 square feet what is the base area of the prism? What is the volume of the prism?
January 15, 2016
You and your friends form a band. You want to record a demo. Studio A rents for $100 up front plus $50 per hour. Studio B rents for $50 up front plus $75 per hour. After how many hours will the rent be the same? What will the rent be? .......... PLEASE HELP. I NEED THIS TO BE ...
November 1, 2015
I am trying to pick a motivational speech topic where I have to convince someone to do something (i.e stop shopping at a store, join a particular organization, etc). However, we have to have 5 credible sources, one of which has to be a peer-reviewed article. So, this limits ...
October 18, 2015
If a rectangle has four congruent sides, it is a square. A square has perpendicular diagonals. Conclusion: A rectangle has diagonals that are always perpendicular. Which of the following is correct The conclusion is valid by the law of syllogism. The conclusion is invalid ...
October 15, 2015
no. of componenents = 2 (Na2SO4 and water - as each phase can be described by these two components only) no. of phases = 3 ( solid and liquid and vapor) degrees of freedom = 2-3+2 = 1
October 3, 2015
I did a lab and have been graded already. One of the questions asked us to pick good scientific questions from a list of choices. One of the choices read, "What soil properties determine the resulting color of a plant's flowers?". Note: I have changed the wording...
September 5, 2015
GPS satellites orbit the earth about 20,000 km above the surface of the earth. The radius of the earth is 6,371 km. What is the acceleration due to earths gravity on the GPS satellites? i've tried fooling around with the A = V^2/ R and V = 2pir/T equations, but I ...
May 1, 2015
Sarah is filling a glass sphere with decorative sand. The radius of the sphere is 2 inches. Which is closest to the minimum amount of sand Sarah needs to completely fill the glass sphere?
April 23, 2015
indian ridian ridge
Simplify the given expression to rational exponent form and justify each step by identifying the properties of rational exponents used. All work must be shown. 1/cubed root of x to -6 exponent
March 7, 2015
If you place $2,000.00 in a savings account with an interest rate of 4.5%/month versus an account with a rate of 3.75%/month, how much more interest could you earn in that month using the first account?
March 2, 2015
chemistry (Bohr model)
The second ionization energy of He is almost exactly four times the ionization energy of H, and the third ionization energy of Li is almost exactly nine times the ionization energy of H: IE (MJ mol-1) H(g) --> H +(g) + e- (1.3120) He+(g) --> He2+(g) + e- (5.2504) Li2+(g...
February 9, 2015
A particle carrying a charge of 6.0uC is located at the origin of a rectangle coordinate system, and a particle carrying a charge of 4.0uC is located at (0,5.0m). What are the magnitude and direction of the electric field at the positions (5.0m,0), (-5.0m,0), and (0,-5.0m)?
February 5, 2015
A positively charged solid sphere of radius 100 mm has a uniform volume charge density of 250 nC/m^2. Determine the electric field (a) 20 mm, (b) 90 mm, and (c) 110 mm from the center of the sphere.
February 5, 2015
If you have 5.6 mL of 95% hexanes to 5% ethyl acetate, how many mL of 85% hexanes to 15% ethyl acetate can you make? Assume unlimited supply of pure ethyl acetate.
February 2, 2015