# Posts by JACKSON

Total # Posts: 258

**Science**

An archer fires an arrow, by applying an average force of 182 N across a distance of 38.0 cm on the bow. If the arrow has a mass of 22.0 g, find its velocity when the archer releases the bow: a)if the conversion is 100% efficient. b)if the conversion is 77.0% efficient.

**Physics**

Would electrons be ejected from aluminum if the incident violet light has a wavelength of 4.00 x 10-7 m?

**Math**

1.9=O.25/0.16*x Find the value of x

**Socials Studies**

Is 9 correct or close ?

**Socials Studies**

Those were my guesses^

**Socials Studies**

1. B 2.C 4.D 5.A 7.B 8.C 9.A 10.C

**Socials Studies**

It's ok Ms. Sue, I just want to keep the work going cause i won't be able to do it tomorrow due to moms surgery. But i'm all good now. But is there a way anybody or you can help?

**Socials Studies**

Good evening Ms. Sue, I am really confuses on this practice i have researched but i'm stressed out and i couldnt find anything. I just wanted to see if and tutors or maybe you could help a bit.

**Socials Studies **

Which of the following conclusions about the freedman's bureau is best supported by the illustrious ? A. It's assisted only african americans B. It's employed only women C. It provided educations to people of all ages D. It's students passed the literacy ...

**Physics**

A pipe is open at both ends. The pipe has resonant frequencies of 655 Hz and 786 Hz (among others). Find the two lowest possible values for the length of the pipe. Use c = 343 m/s for the speed of sound. __ m __ m?

**Math**

What is the product of -1 3/8 and 2 4/5 expressed as a mixed number?

**Social studies**

Yes, 5 is C.

**Social studies**

1. yes 2. one is correct, the other isn't 5. no 8. no 9. yes 10. yes

**Math HELP!**

Use benchmarks to estimate the sum, difference, or product. 1.) 1 7/8 + 1/9 0 1 2 2 1/2 2.) 8 8/9 - 5 1/11 4 5 14 11 3.) 7 2/3 x 3 7/9 2 3/27 11 4/9 28 26/27 21 14/27 4.) Walter had 2/4 yard of string. He used 1/2 of the string for a school project. How many yards of string ...

**World History**

HYPOTHESISING Describe two inventions that helped spark the Scientific Revolution and their impact?

**Math**

There is a deck of 12 cards numbered 1 through 12. One card is drawn at random from the deck, look at it and then put it back in the deck. A total of two cards are drawn in this way. Define the following events: • A : get an even numbered card and an odd numbered card ...

**Math**

Logarithms 3^x-2=18 Work log(3^x-2)=log18 (x-2)log3=log18 xlog3-2log3=log18 x=log3/(log9-log18) e^3x+1=10 lne^3x+1=ln10 3x+1=ln10 I'm stuck here 8^x=5^2x-1 xlog8=(2x-1)log5 xlog8=2xlog5-log5 x=log10/(log5-log8) Are these right?

**Science work**

A reaction is thought to be second order with respect to the concentration of carbon monoxide. What evidence would support this? Answer options... A. Changing the initial concentration would have no effect on the rate. B. Any change in the initial concentration would cause a ...

**Pre Cal**

Hi, I've just tried to work through this as you have and am really struggling. When I multiply by (4-7i) I get negative numbers?

**Pre Cal**

I don't know how do to it. can you explain it to me?

**Pre Cal**

Simplify the expression in a+bi form. (3+i)(5-2i)(4-7i) a. 67-145i b. 75-123i c. 53-145i d. 61-123i

**Pre Cal**

Use Descartes’ Rule of Signs to find the number of possible positive, negative, and nonreal roots for the equation, 4x^3+7x^2+7x+3=0 a. 0 positive, 0 negative, 3 non real roots b. 0 positive, 1 or 3 negative, 0 or 2 non real roots c. 0 positive, 1 or 3 negative, 1 or 3 ...

**math**

the perimeter of a rectangle is 270 meters. find its dimension if the width is 3/4 of its length. <- our teacher gave us that question and whoever gets the correct answer gets extra credit AND I DON'T KNOW HOW TO DO IT HELP

**math**

Find all points (x,y) that are 13 units away from the point (2,7) and that lie on the line x - 2y = 10. Give your answer as a list of points separated by semicolons, with the points ordered such that their x-coordinates are in increasing order. So "(1,-3); (2,3); (5,-7)&...

**chemistry**

what is the approximate volume of gas in a 1.50 mol sample that exerts a pressure of 0.922 atm and has a temp of 10.0°C?

**chemistry**

A sample of gas at 42°C has a volume of 5.2 L and exerts a pressure of 1.00 atm. How many moles of gas are in the sample?

**Chemistry**

Please help?

**Chemistry**

What's the best way to calculate the answer with those values? I don't understand.

**Chemistry**

Oops, sorry. The Ksp for Al(OH)3 is given as 4.6×10^–33 and the Ksp for Pb(OH)2 is given as 1.43×10^–20.

**Chemistry**

Suppose a solution contains 0.21 M Pb2 and 0.41 M Al3 . Calculate the pH range that would allow Al(OH)3 to precipitate but not Pb(OH)2.

**Math**

How do i take out 2 or solve from: y=(2theta + pi)+3 Because i need to find the mathematical changes in the graph but i can't figure it out?

**Chemistry**

A 0.10M solution of a certain monoprotic weak acid has a pH of 2.44. Calculate Ka.

**Math**

Mrs. Walter buys 30 square feet of outdoor carpeting for her patio. If one side of the carpet is 6 feet, what is the length of the adjacent side?

**Math**

Mrs. Walter buys 30 square feet of outdoor carpeting for her patio. If one side of the carpet is 6 feet, what is the length of the adjacent side?

**World History**

HYPOTHESISING Describe two inventions that helped spark the Scientific Revolution and their impact

**Science physic**

What is the magnitude of the average force thet the athele exterts on a landing pad if it's 1.5 m high and deforms by 0.5 Mass of athele= 60kg Centre of mass is 1m

**physics**

When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1250 kg automobile traveling at 37.2 m/s comes to a halt after its brakes are applied, how much can the ...

**physics**

A 3.5 kg rock is initially at rest at the top of a cliff. Assuming the rock falls into the sea at the foot of the cliff and that its kinetic energy is transferred entirely to the water, how high is the cliff if the temperature of 0.88 kg of water is raised 0.10°C? (Neglect...

**Social Studies**

pro-french ideas

**physics**

What would be the orbital speed and period of a satellite in orbit 1.50 ✕ 10^8 m above the Earth?

**Physics**

The gravitational force of attraction between two students sitting at their desks in physics class is 2.23 ✕ 10-8 N. If one student has a mass of 52.0 kg and the other student has a mass of 57.4 kg, how far apart are the students sitting?

**Physics**

Tarzan tries to cross a river by swinging from one bank to the other on a vine that is 11.2 m long. His speed at the bottom of the swing is 7.0 m/s. Tarzan does not know that the vine has a breaking strength of 1.0 ✕ 103 N. What is the largest mass that Tarzan can have ...

**physics**

The bird perched on the swing shown below has a mass of 41.6 g, and the base of the swing, y = 7.88 cm below the hook, has a mass of 147 g. The swing and bird are originally at rest, and then the bird takes off horizontally at 1.94 m/s. How high will the base of the swing rise...

**Art help me please i need it soon**

thank you if i get it wrong I'm going to blame you though

**Art help me please i need it soon**

i chose it because i know its not a or b and c it says perspective and my definition of perspective is giving the illusion of depth and there isn't much depth in this piece of art work what do you think it is

**Art help me please i need it soon**

sorry i mean proportion

**Art help me please i need it soon**

haystacks in brittany by paul gauguin the artis most obviously showed experimentation through his use of perspective texture *** color line Achille de gas in the uniform of a cadet how was portion used in this image to create a mood of tranquility to create an optical illusion...

**ART CHECKING!!! PLEASE CHECK IT!!! :(**

you test said 7 was A mine said 7 was C weird to you go to connections 8th grade what state do you do

**ART CHECKING!!! PLEASE CHECK IT!!! :(**

whats number 7 and number 10 help please i am in a serious need

**ART CHECKING!!! PLEASE CHECK IT!!! :(**

so what were the answers

**Math**

THANKS YOU SO MUCH!!!!!!!

**Math**

In a figure, the radius of the inner circle of the tire is twice the width of the tire itself. To the nearest integer, what percent of the entire area is the area of the tire? My teacher told me the answer is 56%, by rounding the 55.5555...., but I don't understand how to ...

**What did I did wrong MATH**

The ratio of number of one-dollar coins to the number of fifty-cent coins in a box was 3:4. Six one-dollar coins were removed and some fifty-cent coins if the same amount were added. The ratio of the number of one-dollar coins to the number of fifty-cent coins to the number of...

**math**

THANKS

**math**

Someone help please!!!!

**math**

Eric is planning a 7-day resort vacation. He will play golf on four mornings. He also wants to play tennis but can only play tennis on days he does not play croquet. He will play croquet on any day immediately following a day that he plays golf. What is the greatest number of ...

**Physics**

A particle starts from the origin at t = 0 with an initial velocity of 4.8m/s along the positive x axis.If the acceleration is (-2.5 i^ + 4.3 j^)m/s2, determine (a)the velocity and (b)position of the particle at the moment it reaches its maximum x coordinate Express your ...

**chemistry**

Trying to calculate atoms of O in 2.00 moles of H3PO4.I used 2.00 mol h3po4÷4atoms O then × by 6.022 avrogados# My answer 3.011×10^23

**Career Explorations**

Caroline is in JROTC (Junior Reserve Officers’ Training Corps), which is an extracurricular program that trains and prepares students for becoming officers in the armed forces. Since she wants to join the Army after high school, this extracurricular activity is mostly ...

**chemistry**

how are moles and molarity related to volume? is it molx molarity or mol/molarity to get volume?

**chemistry**

The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 655 mL of a 36.0% (w/v) sucrose solution?

**chemistry**

What mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.150 L of 0.190 M NaI? Assume the reaction goes to completion.

**Science Help!**

if you don't use your real name how do they now who's on here

**Chemistry**

What would cause the molecules of gas to get closer together?

**social studies**

some people use this site to actually help us learn so everyone get your pain ties out of a twist and help each other out this is ridiculous

**Language Arts**

B C C Is Correct Thank You!!

**Chemistry**

Please Help! Describe how water could be classified as either an acid or a base. Give an example of each (acid and base). What word describes substances that can be classified as acids or bases?

**chemistry**

aspirin is synthesized through the following reaction C7H603+C4H6O3=C9H8O4=HC2H3O2 a)Assuming the maximum yield that could be obtained is 76.8% what mass of Aspirin C9H8O4 could be obtained from this reaction when 2.00 * 10^2 grams of C7H6O3 reacts with 145.30 grams of C4H6O3...

**chemistry**

what is the theoretical yield

**chemistry**

Methanol CH3Oh can be produced by reacting carbon monoxide and hydrogen gas in the presence of a catalyst. If 75.00 grams of carbon monoxide reacts with 106.3 grams of hydrogen, 68.40 grams of methanol are produced. What is the percent yield of methanol? can someone help me ...

**Health**

There are ________ of muscles that are responsible for chewing movements or mastication.

**English**

Is this correct? The Iowa Senate approved the state lottery bill in a close vote taken this morning.

**English**

Need help changing passive voice to an active one.... Iowa’s state lottery bill was approved by the Senate in a close vote taken this morning.

**Geometry**

Describe the rotation and reflection symmetries in the Maple Leaf of Canada and the "Life" Ancient Egypt cross.

**Chemistry**

16g na+ (aq)

**CHEM 101**

What volume of a 0.726 M sodium hydroxide solution is required to neutralize 24.6 mL of a 0.298 M hydrobromic acid solution ?

**Sociology**

1. The express purpose of dating is eventual marriage. (Points : 1) True False Question 2. 2. Anticipatory socialization is learning the rights, obligations and expectations of a role in preparation for assuming that role at a future date. (Points : 1) True False Question 3. 3...

**Math**

Simplify (tan 4X+tan 2x)/(1-(tan 4X)(tan2X))

**Math**

Find the original price for a kitchen table and chairs selling for $799.99 at 40% off. Round to the nearest dollar

**life orientation**

provide recommendations on how to address ill health

**Chemistry**

I've calculated my % yield for 2 experiments, the second one using the final product of the first one. How would I calculate the "total % yield" like my T.A. wants? Would I just add both percentages up and divide by 200?

**life orientation**

money

**pre- algebra**

what is the simplest form ? 50x to the 4th over 12x

**Computer Programming**

Draw a structured flowchart and write pseudocode that describes the process of looking up a word in a dictionary.

**IT**

How would I write pseudocode that describes the process of looking up a word in the dictionary?

**science**

How can I find the physics behind why a wheel moves faster or slower than other wheels? Is this friction?

**HELP PLEASE!!!!!**

The cowboy rides into town on Tuesday and stays for three days then leaves on Tuesday how is this possible?

**Science**

what is the most common mineral?

**science**

what is an ion?

**science**

what is an isotope?

**science**

how are the elements on the periodic table organized?

**science**

where does bonding occur in an atom?

**Science**

where are electrons located on an atom?

**Science**

What is the most common state of matter?

**Science**

atomic # 5 atomic mass 10.81

**SCIENCE**

Thanks Mrs.Sue

**SCIENCE**

WHAT IS THE PURPOSE OF LIFE?

**Math**

Let f(x) = x - 5 and g(x) = 1/2x^3. Find g^-1(108). Write an expression for (f•g)(x). Solve equation (f•g)(x)= 27.

**Darin**

a teacher knows that 80 percent will score no more than 5 points above or below the class average 85 percent on the test which inequality represents the test score of 80 percent of her student.

**math**

how do u do B?