# Posts by Jess

Total # Posts: 1,094

Physics
b. Find the force on q1. Answer in units of N c. If an object contains the same number of electrons as protons, it is said to be 1. negatively charged. 2. neutral. 3. positively charged. 4. energized.

Physics
A charge q1 = 5 µC is at the origin, and a charge q2 = 4 µC is on the x axis at x = 6 m. Find the force on charge q2 . The Colulomb constant is 8.98755 × 10^9 N·m^2/C^2. Answer in units of N.

Physics
A strong lightning bolt transfers about 21.45 C to Earth. How many electrons are transferred? The elemental charge is 1.602 × 10^−19 C.

LA
What part of speech is idle in this sentence? "The kids are left idle with nothing to do."

physics 100
An aluminum wing on a passenger jet is 30 m long when its temperature is 20°C. At what temperature would the wing be 5 cm (0.05 m) shorter?

statistics
In a course there is a midterm exam, worth 40% of the course grade, and a final exam worth 60%. On the midterm the mean grade was 80 with a standard deviation of 10, and on the final the mean was 75 with a standard deviation of 15. The correlation between the two exams is 0.6...

Chemistry
A piece of iron (Cp = 0.450 J/(gi°C)) that has a mass of 21.5 g and an initial temperature of 100.0°C is submerged in X g of water (Cp = 4.184 J/(gi°C)) at 20.0°C. The temperature of the system (iron and water) changes to 21.4°C. What is the value of X?

Physics
A car and driver weighing 7740 N passes a sign stating “Bridge Out 27.7 m Ahead.” She slams on the brakes, and the car decelerates at a constant rate of 12.3 m/s^2. The acceleration of gravity is 9.8 m/s^2. What is the magnitude of the work done stopping the car if ...

Geometry
Quadrilateral GHIJ is a scale drawing of quadrilateral ABCD with a scale factor r. Describe the following statements as always true, sometimes true, or never true, and justify your answer. a. AB/GH = BC/HI b. perimeter (GHIJ) = r * perimeter (ABCD) c. Area (GHIJ) = r * area (...

Physics
A 65.0 kg ice skater moving to the right with a velocity of 2.5 m/s throws a 0.15 kg snowball to the right with the velocity of 32.0 m/s relative to the ground. a. What is the velocity of the ice skater after throwing the snowball? disregard the friction between the skates and...

Chemistry
If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under the same conditions? 2 CO (g) + O2 (g) ---> 2 CO2 (g)

statistics
The following contingency of frequencies is based on a 5-year study of fire fatalities in Maryland. For purposes of clarity, columns and rows are identified by the letters A-C and D-G, respectively. Blood Alcohol Level of Victim A B C Age 0.00% 0.01-0.09% ¡Ý0.10% ...

linear equation
john invested \$4000 into stocks(s) and bonds(b). The stocks earned 7% interest. the bonds earned 9% interest. if the investment earned \$300, how much money did john have in stocks and bonds. my question- how do I write this formula so I can find the answer

history
I think the answer is C

history
15. The Articles of Confederation called for which of the following? A. The right of the legislature to assess taxes B. The Northwest Ordinance C. A single legislative body D. A chief executive

Geometry
Write a proof. 1. Prove: If the diagonals of a parallelogram are perpendicular, then the parallelogram is a rhombus. 2. Prove: If the diagonals of a parallelogram are congruent, then parallelogram is a rectangle.

bookkeeping
the amounts that increase the cash account are entered in what column?

chem
A weak acid, HA, has an ionization constant of 9.29 x 10-6. If we prepare a solution that is 0.727 M in HA what percent of the acid will be ionized?

chem
The Ka of an acid is 6.3 x 10-8. To the nearest one hundredth, what is its pKa

Chemistry
1. Write a balanced molecular equation for the reaction of solid AgNO3 with aqueous NaCl. Be sure to include the correct number of coefficients and the state of the species (aq, s, l or g). 2. Write the total ionic equation for this reaction, including all physical states. 3. ...

Chemistry
1. A combination reaction may also be a displacement reaction. True or False 2. The combustion of an element is always a combination reaction. True or False For number 1, I first thought true, but then again, nothing is being displaced in a combination reaction, right? You are...

Physics
Mass 1 with a unknown mass starts at rest at the top of a frictionless from a height of 13 meters. It then slides down the incline and moves over a horizontal frictionless surface and collides inelastically (head on) with mass 2 which is 25.4 kg and initially at rest. After ...

Chemistry
Sorry for the double post. Just saw that my original question actually posted though I was told it had not.

Chemistry
A 0.2800 g sample of an unknown acid requires 28.22 mL of 0.1199 M NaOH for neutralization to a phenolphthalein point. a.) How many moles of OH- are used? b.) How many moles of H+ are found in the acid? c.) What is the calculated equivalent molar mass of the unknown acid? If I...

Chemistry
A 0.2800 g sample of an unknown acid requires 28.22 ml of 0.1199 M NaOH for neutralization to a phenolphthalein end point. a.) How many moles of OH- are used? b.) How many moles of H+ are found in the acid? c.) What is the calculated equivalent molar mass of the unknown acid? ...

Math
In three successive years the price of the common shares of Bedrock Resources Ltd. fell 40%, 60%, and 70% ending the third year at 50 cents. a. What was the share price at the beginning of the three-year skid? b. How much (in dollars and cents) did the share price drop in the ...

STATISTICS HELP!!!!!
That's what I got is it correct?

STATISTICS HELP!!!!!
a. 0.214 b. 0.787

STATISTICS HELP!!!!!
Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 175 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each shipment and then ...

Science Density
Water has a density of 1.0g/cm3. Aperson sits in a bath 150cm in length and 90 cm width. Thw water had a depth of 60cm befor the person sat in the bath. after sitting in the bath the water level rose to 68cm. Calculate the mass of the person, giving your answer in kg.

Science -Density
gold has a density of 19.30 g/cm3 . What si the mass of a bar of gold 15 cm x5 cm x 8 cm

Chemistry
Use standard enthalpies of formation to determine ΔHorxn for: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) Enter in kJ.

S.S.
The answer to 12 is Alexander Hamilton

College question
Thanks!

College question
I did my personal essay but I'm not sure if that's the one I'll be submitting. I might rewrite it. I'm applying to city college, hunter, university at buffalo, pace university, binghamton university, le moyne college, st.john's university, and hofstra ...

College question
I checked and it said they accept scores between 1660 and 1980, so I don't think they really look at writing. And for the transfer students they don't look at sat or act scores

College question
My math score was 570 Writing 570 Reading 550

College question
Thank you!

College question
Sorry, Stony Brook University

College question
I'm a high school senior and I'm planning on applying to SBU. I have a 4.0 gpa, a 1690 on the SAT(am going to retake), a 24 on the ACT, took 3 AP classes and am currently taking 2 more, part of National Honor Society, in the top 5% of my school, have an advanced ...

Algebra 1
I have been trying to figure out how to solve multi-step equations. Such as 1/2x+1/4x=16. How do you solve these? I can't seem to figure it out.

English
16. If an adverb modifies a verb, where should you generally place it in a sentence? A. At the end of the sentence B. Near the verb. C. Before the verb D. Anywhere in the sentence

Finite
A box contains 8 blue balls, 3 white balls, and 5 red balls, and that we choose two balls at random from the box. What is the probability of neither being blue given that neither is white?

CHEMISTRY
How to determine direction of polarity? For instance im studying from a practice quiz, an it says that in CH3OH the oxygen is slightly negative, which is understandable as its next to F. but then it says the H is slightly positive. why the H and not the carbon which is two ...

Organic Chemistry
Label each reactant according to it role or roles in the chemical reaction? Two different (OH-) + (HBr) ----> (HOH) + (Br-) (OH-) + (H3CBr) ----> (H3COH) +(Br-) Lewis base, bronsted base, nucleophile, lewis acid, bronsted acid, nucleophile

Organic Chemistry
Consider the resonance structures for the carbonate ion. O--C-O(-) l O(-) (-)O-C--O l O(-) (-)O-C-O(-) l l O How much negative charge is on each oxygen of the carbonate ion? A)0, B) -.33, C)-.50, D) -.67, E)-1.00, F)-1.33, G)-1.50, H)-1.67, I)-2.00 What is the bond order of ...

CHEMISTRY
if you copy the link from beginning to end itll paste easily into a search bar.

CHEMISTRY
Ch3CN(CH3)C2H5 is my kekule drawing ok? I drew it and uploaded a picture. oi61. tinypic . com/2vmztir.jpg

calc
Two paths represented by [x, z] = [-82.2, 43] +s [0.2, 1.7] and [x, y] =[-84.4, 45.5] +t [2.4 -0.9]. Determine the intersection of the two paths.

Chem URGENT
How much energy (in kilojoules) is released when 13.3g of steam at 114.5∘C is condensed to give liquid water at 67.0∘C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K⋅mol) for the liquid and 33.6 J/(K⋅...

Pre-Algebra
How would I also solve the following? f(x)=x^2-4+3 what is the output of f(-3)?

Pre-Algebra
n(n-1)-4 How do I solve stuff like this?

English
This piece focuses on the increase use of smartphones of youths in South Korea. Should I reword that phrase?

math
A Jewlery box has length of 3 and a half, a width if 1 and a half, and a height of 2 units. What is the volume if the box I cubic units? Each of the cubes in this activity has a side length of 1/2. How many cubes with side length 1/2 does it take to form a unit cube? How many ...

us history
can you check my answers please? The “silent majority” referred to A. conservative working- and middle-class citizens B. women C. a liberal coalition of ethnic minorities, women, the aged, and the poor D. the nation’s youth E. deaf-mutes in government programs I...

Class Board
Characteristics and talents that will make me a great leader and member of Class Board is that I am helpful. Helping with homework, simple tasks, struggles that one faces, or providing ideas is a way of how I exemplify this characteristic. I also enjoy doing volunteer work. ...

Class Board
Would volunteering be considered as a talent/characteristic?

Class Board
What characteristics and talents in addition to these do you possess that will make you a great leader and member of the class board and how do you exemplify those? I don't really understand the part where it says "exemplifies" what does that mean?

Geometry
In a garden, a birdbath 2ft 6 in. tall casts an 18-in. shadow at the same time an oak tree casts a 90-ft shadow. How tall is the oak tree?

english essay
Ofcourse, I know Science and Chemistry are not issues but I want to know an issue related to this particular subject.I do not If you understood or not.

english essay
* I need help writing research essay. The topic is to write about an issue or problem that you want to change. Well, I am mostly interested in Science, particularly Chemistry and Nature.

Math
the directions for lemonade say to put 2 cups of liquid concentrate into one gallon of water. if olivia only wants to make one pint of lemonade, how many fluid ounces of concentrate should she put?

biology
I need help with what is happening inside the mitochondria. may help me what's happening 0-50 secondes. h t t p: // w w w.y o u t u b e.c o m / watch ?v=RrS2uROUjK4

Chemistry
What is the pH of a solution whose [H3O+] is 1 X 10 -6 M?

Pre-Algebra
I don't have an account. It says that you need one

Pre-Algebra
How do you find the surface area of cones and cylinders?

SCIENCE

Cyber Community Citizenship
Ayy im doing alrighty

history
As president, Grover Cleveland antagonized A. Western cattlemen and businessmen by restoring many acres of public lands to the federal government B. Democrats by putting many of his fellow Republicans into political positions C. Mugwumps by allowing “pension raids” ...

us history
The intellectual leader of the Social Gospel in America was my book speaks of William Rainsford, Washington Gladden, and Walter Rauscchenbusch but doesnt say who the actual leader is?

us history
Urban political bosses were often the largest source of assistance for city dwellers. true or false? this is true right?

us history
The growth of the railroads was a major cause of American expansion in the late nineteenth century. true or false? is this true?

English
correct the following sentence: elvis our cat play with his toy and then he played on the scratching post There are 6 errors but I could only find 5. Elvis, our cat played with his toy, and then he played on the scratching post.

Math
It is composed of 12 regular pentagonal faces.

Math
hey anonymous im in ninth i was in 8th last year . hey krystal be nice u need to calm down and learn to be nice!!!!!!!

math
thank you :)

math
Four runners ran the relay, Bill ran his lap in 22.738 seconds, Troy ran in 21.874 seconds, Grace ran in 20.32 second, and Jessica ran 19.047 seconds. Estimate the team's total time to the nearest tenth of a second

math
ok so it would be 4.25, 5, 6.5, 7.25

math
complete the sequence of numbers 4.25, 5, 5.75, _______, ______ ?

math
Writing to explain: The digit 5 is usually rounded up, but it can also be rounded down. How would you round the numbers in the equation 9.5 +4.7+3.2+7.5= to the nearest whole number without getting an overestimate or an underestimate?

compute the amount of compound interest earned in 1 year for an investment of 1,000,000 with a nominal interest rate of 8% compounded quarterly.

law
judges in custody cases may interview the subject children outside the presence of the parents only if the attorneys are present? is this true or false

Geometry
Quadrilateral RUBY is a rectangle. Which of the following statements MUST be true? Check all that apply: [] All four of the sides of RUBY are equal. []All four of the angles of RUBY are equal. []RUBY has two pairs of parallel opposite sides.

Calculus
Gerber Banana Plum Granola costs \$0.89 per 5.5-oz serving; each serving contains 140 calories, 31 g of carbohydrates, and 0% of the recommended daily allowance of vitamin C. Gerber Mixed Fruit Carrot Juice costs \$0.79 per 4-oz serving; each serving contains 60 calories, 13 g ...

Finance - Capital Budgeting/Cost-cutting
Caradoc Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for \$560,000 is estimated to result in \$210,000 in annual pre-tax cost savings. The press falls into Class 8 for CCA purposes (CCA rate of 20 percent per ...

Finance - Capital Budgeting/Bid Price
We have been requested by a large retailer to submit a bid for a new point-of-sale credit checking system. The system would be installed, by us, in 89 stores per year for three years. We would need to purchase \$1,300,000 worth of specialized equipment. This will be depreciated...

SCIENCE (Drugs)
dopamine

Accounting
Here is the income statement with all the numbers and accounts (This is a university in Canada by the way) i42. tinypic. com/ ws4i91. jpg (copy and paste without the spaces)

Accounting
I am doing a report on finding the major challenges in the future of my university with regards to their revenue and expenses. I have to discuss the main financial obstacles faced by the university and explain why each presents problems with future planning / budgeting. On the...

Calculus - Integrals
The projected rate of increase in enrollment at a new college is estimated by dE/dt = 6,000(t+1)^-3/2 where E(t) is the projected enrollment in t years. If the enrollment is 3,000 now (t=0), find the projected enrollment 15 years from now.

algebra
how do you find the x & y intercept of the equations y=-3 x=4 without graphing them?

Calculus - Optimization
A fence is to be built to enclose a rectangular area of 800 square feet. The fence along 3 sides is to be made of material \$4 per foot. The material for the fourth side costs \$12 per foot. Find the dimensions of the rectangle that will allow for the most economical fence to be...

Calculus - Optimization
A parcel delivery service a package only of the length plus girth (distance around) does not exceed 24 inches. A) Find the dimensions of a rectangular box with square ends that satisfies the delivery service's restriction and has a maximum volume. What is the maximum ...

Calculus
What would the derivative of c(x) = (10 - x) + 1.4*sqrt((x^2) + 25)

Math
Does an x and y intercept of 0 mean that there is no x or y intercept? Or is 0 an intercept?

Calculus
P(x) = 12x / (1-x) What are the critical points and where is P(x) increasing and decreasing?

Calculus
Find the critical points of f(x) = 0.05x + 25 + (180/x)

Grd 12 Math
Can someone please help me work out how to get to the answer of: tanx + tan (pi-x) + cot (pi/2+x) = tan (2pi-x)

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