High School

Quantum Physics
A particle of mass 2.00×10^−10 kg is confined in a hollow cubical three-dimensional box, each edge of which has a length, 2.00×10^−10 m, and for which the potential energy function is zero inside, and infinite outside, the box. The total energy of the particle is 2.47...

English
posted by rfvv Tuesday, April 17, 2018 at 7:16pm 1. He goes to an academy to study math and English. [Is 'an academy' in generic use? Or Does 'an' mean 'one'?] 2. He goes to academies to study math and English. [Is the word 'academies' in generic use?] 3. He goes to the ...

Math
1. A car is worth $23000 in Jan 2017 in the first year the car depreciates by 15 percent per annum and then 7 percent every year after that. a) what will the car be worth in Jan 2023? b) when will the car be worth $5000? 2. In 2017 the population of a certain animal in your ...

math
The cable in the center portion of a bridge is supported as shown in the figure to form a parabola. The center support is 10 feet high, the tallest supports are 210 feet high, and the distance between the two tallest supports is 400 feet. Find the height of the remaining ...

Math
A baseball is throw from the top of a building and falls to the ground below. Its path is approximated by the relation h= -5t^2 +5t +30, where h is the height above ground in meters and t is the elapsed time in seconds. a. How tall is the building/ b. when does the ball reach ...

Math
terry takes a bus journey of 9km travelling at an average speed of 36km/h a) calculate the time taken in minutes for the bus journey. He then walks the remaining 2km to his home in 20 minutes. b) calculate his average walking speed in km/h. c) calculate terry's average speed ...

maths
At a school Christmas party, the entire school population was treated. 60 boxes each containing 30 cupcakes were ordered. Each class received 2 boxes in equal distribution. 3 cupcakes were given to each child. What was the total population of the school , plus 25 teachers and ...

BIO
In osmosis A) water moves from extracellular to intracellular compartments. B) water moves from a region of high water concentration to a region oflow water concentration. C) solutes move from a region oflow water concentration to a region of high water concentration. D) ...

math
If a ball is thrown straight up from the top of a building that is 407 feet high, the position in feet above the ground is given by the function s(t) = -16t^2 + 75t + 407 where t is the number of seconds elapsed. a. How high is the projectile after 3 seconds? b. How long will ...

English
Identify the part of speech or the form of a part of speech in the underlined portion of each sentence. 1. The yellow house down the street from me is for sale. (Down is underlined) a. preposition b. conjunction c. adjective d. adverb I think #1 is A, or C. 2. What year did ...

English
Today is the first day of middle school. How do you feel? 1. I feel hopeful and nervous. 2. I feel expected and nervous. 3. I feel excited and nervous. 4. I feel ______ and nervous. ----------------------------------------​------------------ Can we answer this way? Which...

Algebra 2
An arch in the shape of the top half of an ellipse is 10 feet wide and 3 feet high at the center. Find the height of the arch 1 foot from the center.

sceince
Johnny just learned about ecosystems in his class at school. At dinner, he explains to his parents that we live in an ecosystem and they are a mix of biotic and abiotic factors. He then tells them an ecosystem can still survive even if one small thing is missing such as ...

Math
From the top of a vertical mast 140m high,two lorries on the same ground level are observed, one due east and the other due west of the mast.If their angles of depression are 65 and 38 respectively; calculate the distance between the two lorries

Social Studies
Some Caribbean islands are coral islands formed from A. tops of underwater mountains. B. skeletons of tiny sea animals. C. a long isthmus. D. high, flat plateaus.

Algebra
Does anyone have a study guide i can use so i can study before my algebra 1B semester exam tommorrow i looked all over the school website but i can ot find the one she recomended

Math homework Help Please
Hii so, I'm on my 5th mental breakdown Today and Its only 9:00 today, and as I know most of you don't care what so ever about what I'm going through and you all have your own problems but I'm honestly horrible at math and this is a big grade for me in it because I have a 60 D ...

Math
How many books each 1.5cm thick can be kept in a shelf 1.45m high

Physics
How come heat engines are more efficient when run at high temperatures?

Physics
A ball in the shape of a uniform spherical shell (like a soccer ball; I = 2/3 mr2) of mass 1.5 kg and radius 15 cm rolls down a 35 degree incline that is 6.0 m high, measured vertically. The ball starts from rest, and there is enough friction on the incline to prevent slipping...

Finance
1. What is an entrepreneur? (1 point) a sole proprietorship a corporation one who opens a new business a bank that loans money 2. Which of the following is the best definition of probable operating costs? (1 point) Amount of money required to start a business Amount of money ...

math 11
A pilot of a downed airplane fires the emergency flare into the sky. The path of the flare is modelled by the equation h=-0.096(d-25)^2 +60 where h is the height of the flare in meters when its horizontal distance from where it was propelled is d meters. An emergency ...

English
What do you do in the evening? 1. I do house chores from time to time. 2. I do household chores from time to time. 3. I do chores from time to time. 4. I do some chores from time to time. 5. I do housework from time to time. [Are they all grammatical? Which ones are common ...

math
Nellie is 25 years old and just starting her retirement savings. Which breakdown of investments would a financial adviser most likely suggest for Nellie at this point in time? A. 0% high-risk, 20% medium-risk, 80% low-risk B. 10% high-risk, 20% medium-risk, 70% low-risk C. 25...

Government
Which of these scenarios are constitutional according to the court's interpretation of eminent domain? Select all that apply. a. A state extends a needed highway and pays fair prices for houses that are in the way of the planned expansion. b. A town wants to build luxury ...

clubs
last year the back gammon club had 30 members. this year the club has 24 members. find the percent of decrease in the number of members please help!!!!! it has to be done by tomorrow for school!!!!

population
the number of students at Maria's school decreased to 98% of last years number. currently, there are 1,170 students . how many students were there last year? round to the nearest whole number.

Physics
In Pittsburgh, children bring their old jack-o-lanterns to the top of the Carnegie Science Center for the annual Pumpkin Smash and compete for accuracy in hitting a target on the ground. Suppose that the building is 23m high and that the bulls-eye is a horizontal distance of 4...

Physics
Can I get help with these questions? The beautiful Multnomah Falls in Oregon are approximately 206m high. If the Columbia river is flowing horizontally at 2.90m/s just before going over the falls, what is the overall velocity of the water when it hits the bottom?

E
(1) Many people wonder why schools should bother teaching students about music. (2) The answer to that is clear. (3) Music education is as useful outside the classroom as it is inside the classroom. (4) Students who study music are often more successful in school than ...

Physics
A cylinder has a diameter of 15cm. The water level in the cylinder is maintained at a constant height of .45m. If the diameter of the spout pipe is .50cm how high is the vertical stream of water?Assume water to be an ideal fluid

english
Each group of sentences contains two errors in parallelism. Underline these errors. Then, on the lines below, rewrite the unbalanced portion to make it parallel with the other listed items in the sentence. 1. Online dating is enjoyable, and it is exciting, but there are also ...

Math
It is a beautiful sunny day at the fair. The U.V. index for this day is 8, or high, so sunscreen is a must for all the young folk. The effectiveness of sunscreen is indicated by the sunscreen protection factor (SPF). The higher the SPF number the fewer U.V. rays can penetrate ...

History
Which identifies the significance of the Nuremberg trials? ensured the execution of every high-ranking Nazi official created four Allied occupation zones in postwar Germany provided a precedent for international cooperation and justice for all war crimes established the ...

geography
why do mountaineers carry oxygen while climbing high mountains?

Math
A total of 210 people attended the opening night of a school musical. Student tickets cost 3.00 each while general admission tickets cost 7.50 each. If total sales were $1296, how many general admission tickets were sold? Need help setting up the equations

Math
.Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures 70°F in the morning, rises to a high of 80°F, falls to a low of 60°F, and then rises to 70°F by the next morning. What is the equation for the ...

math
.Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures 70°F in the morning, rises to a high of 80°F, falls to a low of 60°F, and then rises to 70°F by the next morning. What is the equation for the ...

Math/Algebra
On Dolphin Beach, the high tide is 2.2 meters and only occurs at 12 a.m. and 12 p.m. The low tide is 1 meter and only occurs at 6 a.m. and 6 p.m. Which function models the height of the tide t hours after 12 a.m.? a. h(t)=0.6cos(πt/6)+1.6* b. h(t)=0.6sin(πt/6)+1.6 c. h(t)=1....

psychology
Jose is a Latino client who presents with occupational difficulties. He was laid off from a construction job 8 months ago and has been unable to find work. Ever since he lost his job, he has been drinking alcohol heavily throughout the day. He also reports “occasional” ...

Maths
An ant tries to climb the water pipe 10m high,it climbs 2m up and slips back 1m down in every move. In how many moves will it reach the top of the 10m high pipe

English
1. He is at school. 2. He is at the school. 3. She is in school. 4. She is in the school. [Can we use 'the' or do we have to use without 'the'? Do they have difference in meaning?] ----------------------------------------​------------------------------ 5. They are at ...

math
It is a beautiful sunny day at the fair. The U.V. index for this day is 8, or high, so sunscreen is a must for all the young folk. The effectiveness of sunscreen is indicated by the sunscreen protection factor (SPF). The higher the SPF number the fewer U.V. rays can penetrate ...

English
posted by rfvv yesterday at 7:03am 1. If we don't go to school, we go to academies. 2. If we don't go to school, we go to an academy. 3. If we don't go to school, we go to academy. 4. If I don't go to school, I go to academies. 5. If I don't go to school, I go to an academy. 6...

School
I don't understand this question? List some of the issues facing our society related to marriage, divorce and living together without legal paperwork.

Math
. A school has conducted an exam for the 8th grade and published the results in the table. Find the measure of the central angle that would represent the percent of students who took German in the 8th grade.

math
in a recent survey of middle school students about pizza toppings, it was found that 25 students like pepperoni pizza, 31 like banana peppers pizza, and 5 likes both pepperoni and banana peppers on their pizza. if 66 students were surveyed, how many students do not like banana...

history
Which laws called for strict separation of the races in the South? (1 point) anti-discrimination laws Plessy v. Ferguson laws Jim Crow laws ***** boycott laws 2. Civil rights activists targeted segregation in interstate transportation (1 point) because they knew that the ...

English
1. If we don't go to school, we go to academies. 2. If we don't go to school, we go to an academy. 3. If we don't go to school, we go to academy. 4. If I don't go to school, I go to academies. 5. If I don't go to school, I go to an academy. 6. If I don't go to school, I go to ...

English
1. We are at my cousin's school. 2. We are in my cousin's school. [Can we use both prepositions?] 3. He plays his violin on stage. 4. He plays his violin on the stage. [Are both correct? Which one is commonly used?] 5. I move in my seat. 6. I move on my seat. [Which ...

math
an art class is planning to paint a rectangular mural with an area of 60 square feet .It has to be at least 4 feet high but no more than 6 feet high. How long could it be if the length and width have to be a whole number

English
1. After school, I go to a taekwondo center to learn taekwondo. 2. After school, I go to a taekwondo studio to learn taekwondo. [Which noun do we have to use? Do you have some more expressions?] 3. After school, I go to an oratorical academy to learn how to make a speech in ...

English
1. I go to academy for my English. 2. I go to an academy to learn English. 3. I go to an English academy after school. 4. I go to English academy to learn English. 5. I go to a private institute to learn three subjects such as English, math and science. 6. I go to private ...

Math
The table shows the number of students in a middle school at the beginning of the year and the percentage that can be expected to move out of the area by the end of the year. 8. How many 7th grade students are expected to move by the end of the year? If 12 students actually ...

Marketing
Need links or any information on my product which is energy drinks with biodegradable packaging and our target market are students , could be college or high school? any information on the product and statistics that lead up to why the target market matters.

Other: Writing
I need details for this topic: "Bullies should be expelled from school." Anyone have any ideas? I am writing a book.

Sociology
1. List two or more messages you received from your parents about who you are and what you were about. Discuss how the messages were conveyed. Messages can be delivered directly through what our parents say to us or say to others about us. They can also be conveyed through ...

trignometry
suppose that the water level varies 70 inches between low tide at 8:.40 AM and high tide at 2:55PM .what he cosine function that models the variation in inches above and below the average water level as a function of the number of hours since 8:40AM .at what point in the cycle...

English
1. School lunch is very important for children. [School lunch in general] 2. The school lunch is great. I like it very much. 3. The specific school lunch is great. 4. The school lunch at the cafeteria in our school is great. ------------------------------ Is the explanation in...

English
1A: How's your middle school, Jimin? 2B: It's good. Everyone is friendly. 3A: Is it different from elementary school? 4B: Yes, we have a big library. The school lunch is great, too. ----------------------------------------​--------------------------------------- Q1: Does...

ELA
If the author wanted to rewrite this story as a play with dramatic irony, what change would be MOST effective? A) Coach Wilkins would prepare a speech and share his feelings about retirement. B) The chorus would sing the school's fight song at the beginning and at the end of ...

algebra 2
Logs are stacked 7 rows high. The top row has 15 logs, the second row has 18 logs, and the third row has 21 logs. This pattern continues similarly. What is the total number of logs in the stack?

ELA
Asthma Centers for Disease Control, Asthma, FAQs What Asthma Is 1 Asthma is a disease that affects your lungs. It is the most common long-term disease of children. It causes repeated episodes of wheezing, breathlessness, chest tightness, and nighttime or early morning coughing...

Math
A 2.05m man, standing in front of a street light 3.08m high, casts a 1.5m shadow. What is the angle of elevation from the ground to the source of light?

SS
How did the 1980’s recession affect United States farmers? Since the population was rising, the demand for American farm products was high and family farms prospered. The recession did not impact farmers, only those living and working in urban areas. The demand for farm ...

plz help math
The cost of a student ticket to the school play is $7. Write an equation that correctly relates the total cost, c, for a particular number, s, of student tickets purchased. Identify the independent and dependent variables.

Math
Location High Low Atlanta 106 -12 Boston 103 -19 Chicago 100 -32 Dallas 111 -8 For which city have the record high and low been the CLOSEST together? A) Atlanta B) Boston C) Chicago D) Dallas A?

ELA
You are standing at the front doors on the first day of school, willing yourself to go inside. It can be difficult to make new friends after 15 years, but you are determined to try. This new school is an opportunity to try new things as well as meet new people. You can play ...

Math
A. A survey of 110 teachers showed that 28 of them have a second job. B. A survey of 90 teachers showed that 27 of them have a second job. C. A survey of 70 teachers showed that 21 of them have a second job. D. A survey of 80 teachers showed that 32 of them have a second job...

Math
Heights (inches) Frequency 48 5 49 2 50 0 51 3 52 6 53 5 54 4 55 2 56 0 57 1 A frequency table is shown for the height's of 6th graders in a class at Oakville Elementary School. What is the probability that a sixth grader in this class is 52 inches tall? A) 0.14 B) 0.21 C) 0....

SS
Before 1500 A.D., the area of land that is today known as the United States was inhabited by Native Americans. They often settled in geographic regions for the same reasons as European and Asian immigrants. What is the reason people most likely settled along the Mississippi ...

reading
Please help Claim lead in drinking water with harm humans Which of the following is support this claim a. After use water that contain high level of lead, people note that their toothbrush turned yellow b. After use water that contain high level of lead, people report a ...

English
1. He is the student of our school. 2. He is the student of his school. [Are both grammatical? Are both mean that there is only one student at school?] 3. They are the students of their school. 4. They are students of their school. [Can we use both sentences? Does 'the ...

Lafayette st school
tanisha's potato salad recipe calls for 2.5 pounds of potatoes. She decides to make 3.5 times her regular recipe. How many pounds of potatoes should Tanisha buy? Show your work

Math
The following chart is printed on a package of cookie mix. Number of cookies: 24 Amount of mix: 2 1/2 cups Amount of milk: 1 1/4 cups Marina wants to make six dozen cookies for the school bake sale. How much mix and milk does she need?

health
1. Which food do students eat at lunch time at school in Peru? 2. Which food do students eat at lunch time at school in India? 3. Which food do students eat at lunch time at school in Brazil? Would you answer the questions? And where can I get the information? Thank you.

MATHS
HI linear equation help please... I have plotted known numbers into an excel spreadsheet and it shows the formula as: I am struggling to find the answer to x..?? could you go through it step by step please.....am trying to find ppm of a concentration of iron in test sample...

math :(
An observer stands on the edge of a 375 m high cliff. Below him is a river. He estimates that the angle of depression to the near bank of the river is 80° and the angle of depression to the far bank is 60°. Find the width of the river to the nearest metre.

math
In first gear, or low gear, an automobile's engine runs about three times as fast as the drive shaft. In second gear, the engine does not have to run as fast; usually it runs about 1.6 times faster than the drive shaft. Finally, in third, or high gear, the engine runs at the ...

algebra
A ball is thrown straight up from a rooftop 240 feet high. The formula below describes the​ ball's height above the​ ground, h, in​ feet, t seconds after it was thrown. The ball misses the rooftop on its way down. The graph of...

physics
A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it around the loop if ...

physics
A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it around the loop if ...

science
11. Create a scale for your model thermometer. Divide the distance between the two marks into 5-mm intervals. Starting with the lowest point, label the intervals on the straw 0, 1, 2, 3, and so on. Describe your scale below. You must have made marks at two different known ...

Maths
There are 9 girls and 11 boys on maths team 2 members get chosen for represent the school what is the probability that the 2 will be of the same sex please show me the working out too thank you

Algebra
Zemo, Orb, Yuko, and Sam are friends who live on neighboring space stations of the planet Krayon. They commute to school every day by space shuttle. Orb's space station is one half as far from Krayon as Zemo's space station. Yuko travels as far as the total distance traveled ...

math
Each ticket to a school dance is $4. The total amount collected in ticket sales is $332. Write and solve an equation to find the number of students attending the dance.

World History
What was the function of high culture in Classical Athens?

Tech
Okay, so I don't have Microsoft Word for mac, but my school usually uses word documents. I can access them, but I can't read comments or anything else. Please help?

English
1. Where is the restroom? 2. Where is a restroom? [Can we use both expression? Do you use only #1? Does the restroom mean the specific restroom? Or is 'the restroom' in generic use? Or does the restroom mean the specific restroom near here, which people know?] 3. Where can I ...

Math
Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volune? why? (I need help on this)

Math
The grade 12 class at a school consists of 63 learners in the ratio of 4boys to 5 girls. Determine the number of girls in the class

English
1. Where is the restroom? 2. Where is a restroom? [Can we use both expression? Do you use only #1? Does the restroom mean the specific restroom? Or is 'the restroom' in generic use? Or does the restroom mean the specific restroom near here, which people know?] 3. Where can I ...

English
1. Step onto the wooden platform in this classroom. 2. Walk toward the raised platform to introduce yourself. 3. Step to the platform and recite the whold sentences in the passage. 4. Come onto the podium and intorduce yourself inclucing your school life. 5. You have to ...

Physics
Need help matching the numbers to a - f. I need some explanations to understand. 4. The water enters the pump at a low pressure and the pump does work on the water to eject it at high pressure and with more energy. 5. The water pump provides the motive force that pushes water ...

English
1. Where is the restroom? 2. Where is the grils' room? 3. Where is the boys' room? [Can we use those expressions at school? What other expressions do you have? Does 'the restroom' mean that there is only one restroom?]

English
posted by rfvv yesterday at 7:25am. The dietitian says, "This is the school cafeteria." What does the school cafeterian mean? 1. This is the (only) school cafeterian of our school. 2. This is the specific school cafeterian of our school. [What does "This is the school ...

Math
Rent-splitting Math Help FLOOR PLAN DETAIL 2X2 - LARGE The rent includes the rental amount for the bedroom and shared occupancy of the common areas. Rental price displayed is less a $60/month utility package and $10/month green fee inclusive of: water, electric, sewer, trash, ...

English
1. She is the principal of our school. 2. She is the principal whom I met before. 3. She is the only principal of our school. 4. She is the only principal whom I met before. [#1 means #3, right? What about #2? #2 doesn't seem to be #4, does it?] 5. He is the student of our ...

English
The dietitian says, "This is the school cafeteria." What does the school cafeterian mean? 1. This is the (only) school cafeterian of our school. 2. This is the specific school cafeterian of our school. [What does "This is the school cafeteria." mean?] I'm the school nurse. I ...

math
one out of 43 high school ball players plays college ball.one out of 38 college players plays professional ball. what fraction of high school players plays professional ball?

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