Tuesday

July 26, 2016
**CHEMISTRY**

is this right? 5. After heating the crucible is set on the lab bench where it is contaminated with the cleaning oil used to clean the lab bench but before its mass is measured. The analysis continues where the mass of the anhydrous salt is determined. While heating, the ...
*Tuesday, October 6, 2015 by Diana*

**CHEMISTRY**

I also need help in this please: Suppose the original sample is unknowingly contaminated with a second anhydrous salt. Will the reported percent water in the hydrated salt be too high, too low, or unaffected by its presence? Explain. is it low? if so, can you explain in some ...
*Tuesday, October 6, 2015 by Diana*

**Chem**

The crucible is handled with oily fingers after its mass measurement but before the 3 gram sample of the hydrated salt is measured. Subsequently, in part B.1, the oil from the fingers is burned off. Will the percent water in the hydrated salt be reported as being too high, too...
*Tuesday, October 6, 2015 by Diana*

**Physics **

A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away. The velocity of the ball as it leaves the kicker's foot is 17 m/s at angle of 45 degrees above the horizontal. The top of the fence is 6m high. The ball hits nothing while ...
*Tuesday, October 6, 2015 by Sarah *

**Physics**

A baseball is thrown at an angle of 29 degrees relative to the ground at a speed of 24.3 m/s. The ball is caught 51.0463 m from the thrower. The acceleration due to gravity is 9.81 m/s2 How high is the tallest spot in the ball's path? Answer in units of m
*Tuesday, October 6, 2015 by Jessica*

**Algebra**

Multi-Step The heights of the starting players for the Davis High School boy's basketball team are 78 1/2 in., 74 in., 71 5/8 in., 70 3/4 in., and 69 1/2 in. Find the average height of the starting players.
*Tuesday, October 6, 2015 by Kay*

**Music**

Which is an accurate statement? A high pitch will have a high amplitude. A low pitch will have a high frequency.<--- my answer A high pitch will have a high frequency. A low pitch will have a low amplitude.
*Tuesday, October 6, 2015 by Sara*

**Science**

How to high-tides change? How do Low-tides change? I would figure it would be the moon and sun, but I want other people's answers. (I thank all who answer)
*Tuesday, October 6, 2015 by Shi Buringa*

**Goverment junior secondary school kwanpe(G.J.S.S K.)**

Find the angle between two forces P,Q which has 30N and 27 respectively if the magnitude of the resultant force is 38N
*Tuesday, October 6, 2015 by TIMNAN DAKAT*

**chem 121**

A student rushed in order to complete this experiment quickly. In attempting to save time, the student made some procedural errors. Briefly describe the effect of each of the following errors on the calculated ratio of Mg to O (indicate whether the calculated ratio would be ...
*Monday, October 5, 2015 by Anonymous*

**Pre-Cal**

A drone 125 ft high sights a landing pad with an angle of depression of 15 degrees. what is the horizontal distance between the drone and the landing pad? I tried all the methods set it up multiple ways, and I'm at a loss. My teacher said the answer is 466.5ft.. but how? ...
*Monday, October 5, 2015 by Anna*

**Physics**

You are standing on the roof of a building 300 m high, and throw a stone upward at 25 m/s. Find the speed of the stone as it strikes the ground.
*Monday, October 5, 2015 by Josh*

**Biology**

a. A human cell is placed in a container of sugar water. Explain what would occur, if the cell membrane is impermeable to sugar. I know that the water in the cell is the high concentration and will go to the sugar water which is the low concentration. b. Another cell is placed...
*Monday, October 5, 2015 by Judy*

**Math**

If 10 classes in 10 schools receive 10 calculators each, which expression (10+10+10 or 10x3 or 1000 ) represent the amount of calculators the school discrit will buy.
*Monday, October 5, 2015 by A*

**spanish**

16. In Colombia, ________. (1 point) children are not required to go to school children are required to go to school until they are about 9 children are required to go to school until they are 14 children are required to go to school until they are about 18 17. What is one ...
*Monday, October 5, 2015 by dea*

**help**

Industrial workers often labored: A. for high wages. B. under ideal conditions. C. in well-ventilated factories. D. with unsafe machinery.
*Monday, October 5, 2015 by american history*

**Statistics**

If 12 women are randomly selected, what is the probability that their mean head circumference is between 21.8 in and 22.8 in.? If this probability is high does it suggest that an order of 12 hats will very likely for each of 12 randomly selected women? Why or why not? Assume ...
*Sunday, October 4, 2015 by Kacey*

**zambia school**

500ml of gas at 20 degrees celcius is under a pressure of 100cm of mercury what would be its volume at s.t.p?
*Sunday, October 4, 2015 by Natalia*

**Algebra**

A miniature rocket is launched so that its height in meters after t seconds is given by the equation h=-4.9t^2+29.4t+7. (a)draw a graph of the equation (b)how high is the rocket after 5 seconds? (c)what is the maximum height the rocket will attain? (d)how long after the launch...
*Sunday, October 4, 2015 by Amy*

**Eligugu high school science**

5 kg of steel is immersed in water at 2 degrees Celsius. what mass of water is required if the final temperature is 40 degrees Celsius?
*Sunday, October 4, 2015 by Mandla*

**Eligugu high school physical science**

A cannon with a mass of 10 tons fires a bullet horizontally with a mass of 50kg. The velocity of the bullet when it leaves the barrel of the cannon is 800 m / s. calculate the recoil velocity of the cannon.
*Sunday, October 4, 2015 by Mandla*

**English IIB**

It takes both bravery and self-sacrifice to be a hero. Heroes have the inner strength to stand up for their beliefs, even in the face of danger. Those who fight for a just cause may not always triumph in the end, but a hero will always triumph in spirit. The sacrifices made by...
*Saturday, October 3, 2015 by nereyda*

**math**

if the wall is 8 2/5 high and 18 1/3 long how do I calculate how much square foot is painted blue if 1/2 is painted?
*Saturday, October 3, 2015 by denise*

**Physics**

It is friction that provides the force for a car to accelerate, so for high performance cars the factor that limits acceleration isn't the engine; it's the tires. For typical rubber-on-concrete friction, what is the shortest time in which a car coukd accelerate from 0 ...
*Saturday, October 3, 2015 by Lane*

**math**

Question: For the competition, each band member needs $12 for food. To get to the competition, the school rents 3 buses that cost $580 each. Write and evaluate an expression for the three costs. - Answer: (75/12) + (3/580) = - Key: A school band has 75 members. The band enters...
*Friday, October 2, 2015 by Anon*

**school for wildlife conservation**

what is the meaning of global warming
*Friday, October 2, 2015 by david*

**physics**

a mango fruit drops to the ground from the top of its tree which is 5m high.how long does it take to reach the ground?
*Friday, October 2, 2015 by adeoye*

**Health**

So I'm suppose to make a post in my school about how to deal with stress. But I am always with stress and since I've turned very forgetful (I don't know why) I have forgotten how to cope with it. Any examples on how to deal with stress. Here, this is my assignment...
*Friday, October 2, 2015 by Derpy Pegasus*

**Physics - Inverted pendulum**

Hello. My son is in pre-school, but he's already starting his Undergraduate for college. Never too early to start, right? So he got this problem for homework. Can anyone help? He supposedly needed "nap time" and slept through the entire lecture the professor was ...
*Friday, October 2, 2015 by John Cena*

**Chemistry**

The density of water is 1gm/cm^3. Use the density and these dimensions to find the mass of the water in grams in a fish tank. Use the rules of significant figures and rounding to come up with the correct answer. 30 cm width * .075 meters length * 15 inches high I got 8572.5 ...
*Thursday, October 1, 2015 by Anonymous*

**Your professinal image**

The key to maintaining a strong self-esteem is A. being able to bounce back quickly from disappointments. B. not pursuing something once you've failed at it. C. telling yourself repeatedly that you're better than others. D. never allowing it to go up or down but ...
*Thursday, October 1, 2015 by jennifer*

**physics**

A skier leaves the top of a ski ramp at an angle of 25 degrees with an initial velocity of 10 m/s. The ramp is 60 m high, neglecting air resistance determine: a. The time it takes the sk ier to reach the ground. b. How far away from the base does he land? c. How high above the...
*Thursday, October 1, 2015 by T*

**physics**

A ball is kicked with an initial velocity of 20.0 m/s at an angle of 35 degrees to the ground. If it is to pass over a wall 5.6 m high determine a. The minimum horizontal the wall can be placed from the ball’s launch point in meters. b. What would be the ball’s ...
*Thursday, October 1, 2015 by T*

**physics**

A skier leaves the top of a ski ramp at an angle of 25 degrees with an initial velocity of 10 m/s. The ramp is 60 m high, neglecting air resistance determine:
*Thursday, October 1, 2015 by T*

**Physics**

Sam, whose mass is 71.0 kg , takes off down a 51.0 m high, 11.0 ∘ slope on his jet-powered skis. The skis have a thrust of 210 N . Sam's speed at the bottom is 41.0 m/s .
*Thursday, October 1, 2015 by W*

**math**

The ratio number of adults to students at the prom is 1:10. Last year there were 162 more students at the prom. If the school is expecting the same attendance this year,how many adults have to attend?
*Thursday, October 1, 2015 by Dwan*

**math**

If you have 4,358 students at one school and another school has 3times that many students, how many students are there?
*Thursday, October 1, 2015 by Anonymously *

**math**

If you have 4,358 students at one school and another school has 3times that many students, how many students are there?
*Thursday, October 1, 2015 by Anonymous*

**Career**

1.)your skills are the things (1 point) A.)Your like to do B.)You can do C.)That are most rewarding to you on the job D.)Regarding the ways you usually think and behave 2.)An event is probably a pride experience for you want to tell people which of the following A.)"I ...
*Thursday, October 1, 2015 by YRN DJ*

**Chemistry **

Mary was determining the density of a metal cylinder. When recording the diameter, she mistakenly recorded a number that was too small. Will her calculated value for density be too high or too low? Explain
*Wednesday, September 30, 2015 by Anonymous*

**PHYSICS**

A placekicker is about to kick a field goal. The ball is 20.1 m from the goalpost. The ball is kicked with an initial velocity of 18.7 m/s at an angle θ above the ground. Between what two angles, θ1 and θ2, will the ball clear the 3.12-m-high crossbar? Give your...
*Wednesday, September 30, 2015 by Tori*

**Math help**

Mt. Everest is more than 8000 m high. How fast would an object be moving if it could free fall to sea level after being released from an 4750-m elevation? (Ignore air resistance) How would I solve this?
*Wednesday, September 30, 2015 by Hanna*

**international school dammam**

if zeroes of p(x)=5x^2-7x+k are reciprocal of each other then find value of k
*Wednesday, September 30, 2015 by noaf*

**Washington high**

A man invest $12000 in two accounts.If one account pays 10% per year and the other pays 7% per year, how much was invested in each account if the total interest earned in the first year was $960?
*Wednesday, September 30, 2015 by anju*

**Washington high**

Stacy has a total of $6000 in two accounts.the amount of interest she earns from both accounts in the first year is $500.if one of the accounts earns 8% interest per year and the other earns 9% interest per year, how much did she invest in each account?
*Wednesday, September 30, 2015 by anju*

**Washington high**

A women has a total of $9000 to invest. She invests part of money in an account that pays 8% per year and rest in account that pays9% per year, if the interest earned in the first year is$750, how much did she invest in each account
*Wednesday, September 30, 2015 by anju*

**Chem**

Suppose the water sample has a relatively high percent of volatile solid material. How would this have affected the reported mass of: a. dissolved solids -- too high, too low, or unaffected? Explain. TDS will be unaffected b. total solids -- too high, too low, or unaffected? ...
*Wednesday, September 30, 2015 by Rebecca*

**math **

Elizabeth is an event planner who has been hired to plan a class reunion. The class has 275 people and 256 people will be attending. Elizabeth must plan the seating decorations and food. The school colors are blue and white. Elizabeth has 84 blue balloons and w white balloons...
*Tuesday, September 29, 2015 by Ilona*

**Math**

there are 16 girls and 20 boys in the school band. what is the ratio of girls to boys? Simplest form
*Tuesday, September 29, 2015 by Taiden*

**Physics**

Select the motion diagram that corresponds to each of the four situations. E.g., if diag. A corresponds to the first situation, diag. C to the second, and none of the diagrams to situations 3 and 4, enter ACNN. Note that the velocity and acceleration vectors are shown; both ...
*Tuesday, September 29, 2015 by Mike*

**Physics**

Select the motion diagram that corresponds to each of the four situations. E.g., if diag. A corresponds to the first situation, diag. C to the second, and none of the diagrams to situations 3 and 4, enter ACNN. Note that the velocity and acceleration vectors are shown; both ...
*Tuesday, September 29, 2015 by Michael *

**Science**

Please help: Observations can lead to hypotheses. Hypotheses can lead to new experimentation. Which best describes an observation and hypothesis that might lead to new experimentation? A. Dr. Sattler discovers a new plant that grows near underwater volcanoes. She thinks the ...
*Tuesday, September 29, 2015 by Izabella*

**birla public school**

A mixture of 0.6 mole of al and 0.9 mole of cl2 are allowed to react as 2al+3cl2=2al2o3 . Calculate mass of reactant left unreacted. (al=27gmol-1 , cl=35.5gmol-1 )
*Tuesday, September 29, 2015 by ashika*

**Life orientation **

Illustrate three ways on how this issue can impact negatively to the health of the people in your school/community.
*Tuesday, September 29, 2015 by Cassper gabuza*

**St. Louise's Inclusive Secondary School**

How to prepare 0.5m solution of HCL
*Tuesday, September 29, 2015 by Mfonobong gabriel*

**Science**

Many stems hold leaves high. Higher leaves are more likely to get sunlight. How is this helpful to a plant? I don't understand
*Monday, September 28, 2015 by BUBBY*

**Physics**

A small crack occurs at the base of a 13.5 m high dam. The effective crack area through which water leaves is 1.55 10-3 m2. (a) Ignoring viscous losses, what is the speed of water flowing through the crack?
*Monday, September 28, 2015 by Anonymous*

**Physics**

A small crack occurs at the base of a 13.5 m high dam. The effective crack area through which water leaves is 1.55 10-3 m2. (a) Ignoring viscous losses, what is the speed of water flowing through the crack?
*Monday, September 28, 2015 by Anonymous*

**Physics**

A small crack occurs at the base of a 13.5 m high dam. The effective crack area through which water leaves is 1.55 10-3 m2. (a) Ignoring viscous losses, what is the speed of water flowing through the crack?
*Monday, September 28, 2015 by Anonymous*

**Iqhawelesizwe combined school**

Identify four environmental issues that cause ill-health
*Monday, September 28, 2015 by Senzo myeni*

**Math**

Imagine that you are standing on the ground 15 feet away from a flagpole. If the top of the flag is 25 feet high, which equation represents the angle θ your feet make with the top of the flag?
*Monday, September 28, 2015 by Rochelle*

**chemistry**

Predict which pure substance has the following chemical and physical properties: white solid at room temperature, high melting point, soluble in water, highly conductive when dissolved in water, reactive with acids, and high pH. A) zinc oxide B) sodium hydroxide C) molecular ...
*Monday, September 28, 2015 by Jacob Harver*

**LA**

i am writing a story about my pet and i need help i am not sure if this is good Help!! My Pet Rexie I have known Rexie ever since my baby brother was born. I remember it like it was yesterday; we had just gotten home from school and in my father’s hands he was holding a ...
*Monday, September 28, 2015 by Sofia*

**psychology**

Gavin, a seventh grader, has more trouble in school than many of his peers, particularly with word problems in math and other areas that aren't concrete and tangible. In spite of high motivation, he still struggles, and new situations and problems “throw him” ...
*Sunday, September 27, 2015 by Anonymous*

**Health**

Which of the following secondary sex characteristics do not develop during the teen years? (1 point) development of breasts in girls development of body hair in boys development of ovaries in girls and testes in boys development of acne in boys 2. What is the primary cause for...
*Sunday, September 27, 2015 by Shalee ^~^*

**Health PLEASE HELP**

Hi, can some one check my health answers? I answered all the questions, I would just like some one to check them :) btw I go to connections academy. 1.Which of the following secondary sex characteristics do not develop during the teen years? (1 point) development of breasts in...
*Sunday, September 27, 2015 by KawaiiLightlee*

**Physics**

To ward off oceanic invaders, a cannon is placed 10 meters from the water's edge, pointing out at sea. The cannon is capable of firing a projectile at a maximum velocity of 100m/s. a) what is the maximum firing range of the cannon? b)If the cannon was placed on a cliff ...
*Sunday, September 27, 2015 by :(*

**Pre-Algebra**

You are a member of a fund raising committee for your school. The committee is sponsoring a fair. Each member of the committee has agreed to sell 50 tickets to the fair. Student tickets are $3 each and adult tickets are $5 each. Use an expression to determine how much money ...
*Sunday, September 27, 2015 by Zoe*

**Math**

Three fifth of the members of a hiking trip club went on the last hiking trip. If 39 people went on the trip how many are in the club? Mathew travels two and one half miles to get to school. This is 3 times the distance that Jennifer travels . How far does Jennifer travel?
*Sunday, September 27, 2015 by Sunny*

**math**

Peter will apply to his favorite school . Requirement for admission to the school : 1. Indonesian languange score should not be less than 6 , 2. Mathematics score should not be less than 5 3. Score of Indonesian languange + score of mathematics should not be less than 12. ...
*Sunday, September 27, 2015 by Iman*

**shammah int'l school**

A man walks at 30km east ward and 35km north ward what is the resultant displacement of the man,as well as his direction
*Sunday, September 27, 2015 by chika nsitem*

**Phsyics**

To ward off oceanic invaders, a cannon is placed 10 meters from the water's edge, pointing out at sea. The cannon is capable of firing a projectile at a maximum velocity of 100m/s. a) what is the maximum firing range of the cannon? b)If the cannon was placed on a cliff ...
*Saturday, September 26, 2015 by Anonymous*

**English**

Identify three adjectives in the sentence below. "When I cut my right hand on the broken glass, I searched high and low for some pain-killing medicine." a. right, glass, some b. right, broken, pain-killing c. my, right, hand Is the answer b?
*Saturday, September 26, 2015 by SkatingDJ*

**Arithmetic**

A student must walk 2 miles to get to school. If she walks at an average of 3 miles per hour, how many minutes should it take her to walk to school?
*Saturday, September 26, 2015 by Anonymous*

**Physics**

A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 25.2 m/s A 1.0-kg stone is thrown from the basket with an initial velocity of 11.7 m/s perpendicular to the path of the descending balloon, as measured relative to a person at rest in ...
*Friday, September 25, 2015 by daniela*

**Z table**

Suppose that the readings on the thermometers are normally distributed with a mean of 0∘ and a standard deviation of 1.00∘C. If 8% of the thermometers are rejected because they have readings that are too high, but all other thermometers are acceptable, find the ...
*Friday, September 25, 2015 by Anonymous*

**physics**

A robot probe drops a camera off the rim of a 323 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2 . Find the velocity with which it hits the ground. Answer in units of m/s.
*Friday, September 25, 2015 by Anonymous*

**Physics **

A rifle that shoots bullets at 447 m/s is to be aimed at a target 40.7 m away. If the center of the target is level with the rifle, how high above the target must the rifle barrel be pointed so that the bullet hits dead center?
*Friday, September 25, 2015 by barich*

**Physics **

A certain airplane has a speed of 336.8 km/h and is diving at an angle of θ = 32.0° below the horizontal when the pilot releases a radar decoy (see the figure). The horizontal distance between the release point and the point where the decoy strikes the ground is d = ...
*Friday, September 25, 2015 by barich*

**Algebra**

A school store has1200 pencils in stock, and sells an average of 24 pencils per day. The manager reorders when the number of pencils in stock is 500. In how many days will the manager have to reorder.?
*Friday, September 25, 2015 by Step his*

**BHISHO HIGH**

CAN U HELP ME CAUSE I WILL DOING ACCOUNTING NEXT YEAR BUT STILL I HATE MATHEMATICS,IS GOOD FOR ME TO DO ACCOUNTING?
*Thursday, September 24, 2015 by BONGA*

**physic**

A ball is dropped from the top of an apartment building. A person is on a patio somewhere beneath the top of the apartment building and the person notices the ball takes 0.11 seconds to fall from the top of his patio to the bottom of his patio. The height of his patio is 3.1 ...
*Thursday, September 24, 2015 by elle*

**Physics **

A car, moving along a straight stretch of high- way, begins to accelerate at 0.014 m/s2. It takes the car 23.2 s to cover 1 km. How fast was the car going when it first began to accelerate? Answer in units of m/s.
*Thursday, September 24, 2015 by Bob*

**English**

Hello which sentence is correct? I'm not sure. as I had learned much from garfield high school. or I have learned much from Garfield high school. Should I use had or have? thank you
*Thursday, September 24, 2015 by Kevin*

**Maths**

A boy cycles 7.5km to school in 27½ minutes.Find his average speed in meters per second.
*Thursday, September 24, 2015 by Awuni*

**science**

Which physical properties are characteristics of metals? Choose all that apply. -brittle -high luster -malleable -ductile -not very reactive 1, 2, and 5?
*Thursday, September 24, 2015 by luke*

**physics**

A baseball player standing on the ground throws a ball straight up. The ball leaves the player's hand with a speed of 15.5 m/s and is in the air for 3.30 s before hitting the ground. How high above the ground was the baseball player's hand when he released the ball?
*Thursday, September 24, 2015 by niro*

**english**

Question #1 Is the following sentence written correctly? Yes or no? 1. “Hey,” he asked, “who are they?” 2. “No,” she said “that is not painful.” 3. “His mother, he said, “is taking night classes”. 4. “Mother,” he...
*Thursday, September 24, 2015 by Anonymous*

**english**

Which of the following sentences demonstrates proper pronoun-antecedent agreement? a. Canada is proud of their hockey team. b. Both of the boys performed well in his school play. c. Neither the girl nor her friends are going to her party. d. The jar of pickles sits on their ...
*Thursday, September 24, 2015 by JR.*

**english**

My favorite hobby in high school was showing horses in community horse shows. Which of the following is the simple subject? a. High school b. Horses c. Shows d. Hobby i think the answer is d.) hobby 2. Which of the following sentences is written correctly? a. I found the shoe ...
*Thursday, September 24, 2015 by john*

**English language**

what are proper nouns and common nouns and give examples of each. how do I make a noun mobile school project.
*Wednesday, September 23, 2015 by Amoy*

**math**

In jims,5 times as many students take the bus as those who walk. A total of 24 students walk or take the bus. How many more students take the bus than walk to school?
*Tuesday, September 22, 2015 by Morgan*

**science **

What is the volume of a cardboard box that is 11 inches long, 3 inches wide, and 7 inches high.
*Tuesday, September 22, 2015 by Alayssa Hickey*

**mshweshwe high school**

A car accelerates from rest at 5 metres per square seconds. Calculate the distance covered by the car after 6 seconds
*Tuesday, September 22, 2015 by sipho*

**School**

14.569
*Monday, September 21, 2015 by Anonymous*

**Physics: Please help!**

I can't figure this out at all...Can someone please explain it to me? It has been claimed that an insect is the best jumper in the animal kingdom. This insect can accelerate at 3950 m/s2 over a distance of 2.3 mm as it straightens its legs. (a) Assuming a uniform ...
*Monday, September 21, 2015 by Claire*

**Physics**

I cannot figure out this question, and it would be greatly appreciated if someone could help me out! :) It has been claimed that an insect is the best jumper in the animal kingdom. This insect can accelerate at 3950 m/s2 over a distance of 2.3 mm as it straightens its legs. (a...
*Monday, September 21, 2015 by Claire*

**klein eden combined school**

l.o types of environmental issues
*Monday, September 21, 2015 by sya*

**prealgebra**

A school library charges a fine of 5 cents on the first day a book is overdue, then doubles the amount owed each day until payment is made. Jada and Juan each had a book that was overdue. Jada paid a fine that was $2.40 more than Juan’s fine. Which statement about the ...
*Monday, September 21, 2015 by Anonymous*

**physics**

Another scheme to catch the roadrunner has failed. A safe falls from rest the top of a 30.2 m high cliff toward Wiley Coyote, who is standing at the base. Wiley first notices the safe after it has fallen 17.4 m. How long does he have to get out of the way? The acceleration of ...
*Monday, September 21, 2015 by luma*