Wednesday
September 17, 2014

Homework Help: High School

Post a New Question | Current Questions

STATISTICS
What research steps must you go through to use the relationship between a person’s intelligence and grade average in high school so that, if you know a person’s IQ, you can more accurately predict the person’s grade average?
Monday, February 10, 2014 at 5:29am

Physics
suppose you are standing on the edge of a cliff 400 m high and you throw 2 balls in the air: one (ball a) directly upward with a speed of 17.6 m/s and one (Ball b) directly downward with a speed 17.6 m/s. 1.) how high will ball A rise? 2.) How long will it take Ball A to reach...
Sunday, February 9, 2014 at 9:07pm

Physics
suppose you are standing on the edge of a cliff 400 m high and you throw 2 balls in the air: one (ball a) directly upward with a speed of 17.6 m/s and one (Ball b) directly downward with a speed 17.6 m/s. 1.) how high will ball A rise? 2.) How long will it take Ball A to reach...
Sunday, February 9, 2014 at 8:36pm

Physics
If a salmon swims straight upward in the water fast enough to break through the surface at a speed of 5 meters per second, how high can it jump above water?
Sunday, February 9, 2014 at 7:52pm

Harriet Tubman Charter School Bronx NY10456
Which needs regrouping to add? A. 47+3 B. 32+7 C. 15+4 D. 11+8
Sunday, February 9, 2014 at 7:38pm

physics
passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the passenger Both observers ...
Sunday, February 9, 2014 at 7:09pm

physics
a stone is thrown vertically upward with a speed of 10.5 m/s from the edge of a cliff 76.0 m high. how much later does it reach the bottom of cliff? what is its speed just before hitting? what total distance did it travel
Sunday, February 9, 2014 at 4:43pm

algebra & trigonometry
A school wants to purchase some round tables and some rectangular tables. The costs of one round table and one rectangular table are $20 and $25, respectively. The school wants to spend at most $1,000. Represent this problem for the purchase of x round tables and y rectangular...
Sunday, February 9, 2014 at 2:13pm

science/physics
If a pendulum is not pushed, why does it not go as big when it swings back. Where does the lost PE go? ans. Since there is no force applied to the pendulum there is not enough Kinetic energy (energy of motion) to transform into potential energy to make it swing back. The ...
Sunday, February 9, 2014 at 1:19pm

math
$8000 is shared between 3 schools in the ratio of 2:3:5, how much will each school get?
Sunday, February 9, 2014 at 10:52am

physics/science
If a pendulum is not pushed, why does it not go as big when it swings back. Where does the lost PE go? ans. Since there is no force applied to the pendulum there is not enough Kinetic energy (energy of motion) to transform into potential energy to make it swing back. The ...
Sunday, February 9, 2014 at 10:41am

physics
a bead on a wire 30m high is released and reaches point A, where is loops twice towards the right. what is the velocity and acceleration at point A-D? point A is at 20m directly below from starting point. Point B is 10m at the bottom of the first loop. point C is in between ...
Saturday, February 8, 2014 at 7:06pm

Physics
Two cars pass a school when a stopwatch reads zero. They both travel in the same direction. Car A travels at a constant speed of 98 km/h and Car B travels at 64 km/h. How many meters apart are the two cars when the stopwatch reads 2.0 hours?
Saturday, February 8, 2014 at 4:23pm

science --- pls check my work!!!
hi, pls check my work asap! 1. A ___ has a definite shape and a definite volume. (1 point) solid*** liquid gas molecule 2. Why is a gas able to flow? (1 point) Its particles have melted and can move around.Its particles have high viscosity and can move around. Its particles ...
Saturday, February 8, 2014 at 12:23pm

physics
A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 8 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?
Friday, February 7, 2014 at 5:09pm

Research Project: Anatomy & Physiology 1
Could someone read this paper and tells me if this is good or do I need to change some stuff: Introduction: ALS is distinguish by insistent collapse of both upper motor neurons (UMN) and lower motor neurons (LMN) leading to progressive muscular paralysis and death usually ...
Friday, February 7, 2014 at 10:29am

statistics
how do the 4th grade girls weight in principal ben's school compare to the national mean weigh = 90 sd=15
Thursday, February 6, 2014 at 9:58pm

English
1. The cost of the car is high. 2. The cost of the car is expensive. 3. The fee is low. 4. The fee is cheap. 5. The bus fare is high. 6. The bus fare is expensive. -------------- Which ones are grammatical?
Thursday, February 6, 2014 at 8:44pm

Check essay? thankies :)
Rock Climbing Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing, equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be joyful, but for it to...
Thursday, February 6, 2014 at 5:24pm

math
A water tank is 12m high. it has a a rectangular base, and the length is 7m more than the width. if the volume is 1728m3, find the dimensions of the tank
Thursday, February 6, 2014 at 2:44pm

math
A water tank is 12m high.it has a a rectangular base, and the length is 7m more than the width. if the volume is 1728m3, find the dimensions of the tank
Thursday, February 6, 2014 at 1:36pm

Chemistry
In a high temperature corrosion cell we have 5 vol% O2 and 500 vppm HCl. We know at high temperature the reaction is Deacon Process (600C) 4HCl(g)+O2(g)=2Cl2(g)+2H2O(g). We have thermodynamic phase diagram of a system (e.g., Fe-O2-Cl2) at 600 (log pO2 - x axis and log pCl2 in ...
Thursday, February 6, 2014 at 4:44am

Check essay? thankies :)
Rock Climbing Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing, equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be joyful, but for it to...
Wednesday, February 5, 2014 at 11:56pm

English
1. The price itself is expensive. 2. The price itself is high. 3. The price itself is cheap/inexpensive. 4. The price itself is low. (Are they all grammatical? Which one is incorrect?)
Wednesday, February 5, 2014 at 10:40pm

math - interest rates/annuity
Plan to save $5000 per year for retirement with first investment made 1 year from now. Plan to earn 10% per year on investments. Plan to retire in 43 years, immediately after making last $5000 investment. a) if, instead, decide to withdraw $300,000 per year in retirement, with...
Wednesday, February 5, 2014 at 10:22pm

Math
The 80 students in the 5th grade at north side elementary school voted for their favorite animal after a trip to the zoo.the elephant received 3/5 of the votes.how many votes did the elephant receive.
Wednesday, February 5, 2014 at 8:26pm

Math
Tickets for the school play were $6.00 and 1/5 of each ticket paid for the cost of printing the programs.how much of each ticket went towards printing the programs.
Wednesday, February 5, 2014 at 7:46pm

Check essay? thankies :)
Rock Climbing Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing, equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be joyful, but for it to...
Wednesday, February 5, 2014 at 6:50pm

physics
As a rock of mass 3.0 kg drops from the edge of a 60. meter high cliff, it experiences air resistance, whose average strength during the fall is 22. N. At what speed will the rock hit the ground? Answer 1.5 m/s 13 m/s 18 m/s 26 m/s 34 m/s
Wednesday, February 5, 2014 at 6:10pm

Social studies
7. "In 1831 Lowell was little more than a factory village. Several corporations were started, and the cotton-mills belonging to them were building. Help was in great demand; and stories were told all over the country of the new factory town, and the high wages that were ...
Wednesday, February 5, 2014 at 3:32pm

socail studies
7. "In 1831 Lowell was little more than a factory village. Several corporations were started, and the cotton-mills belonging to them were building. Help was in great demand; and stories were told all over the country of the new factory town, and the high wages that were ...
Wednesday, February 5, 2014 at 12:04pm

physics
A beach ball, moving with a speed of +1.28 m/s rolls off a pier and hits the water a horizontal distance of 0.74 m from the end of the pier. How high (magnitude only) above the water is the pie?
Tuesday, February 4, 2014 at 7:01pm

Science
Work or no work? Work=ForcexDistance 1. A person holding a box of potatoes. No work 2. A batter holds his bat at his side while waiting for his turn to play. No work 3. Your sister carries home her books from school. No work 4. You push a box from point A to point B along the ...
Tuesday, February 4, 2014 at 6:57pm

History!
1. Which of the following helped to increase the populations of northeastern cities? (1 point) more diversity successful cotton crops growth of factories and trade *** building of the Erie Canal 2. A boundary was set between Canada and the United States as a result of (1 point...
Tuesday, February 4, 2014 at 5:51pm

Ed. Tech.(Need answers checked)
Which term, as it relates to the Internet, means to act in an unthinking, unsafe, or disrespectful manner online? a. Irresponsible behavior b. Moderate-risk behavior ****** c. Low-risk behavior d. Responsible Behavior Caley took a bunch of pictures at her birthday party last ...
Tuesday, February 4, 2014 at 1:41pm

Physics
After a snow storm, your driveway of area 50m^2 is covered with a layer of ice 10cm high at a temperature of 0C. You decide to use sunlight falling at 200 W/m^2 to melt the ice? Is it good idea? (Density of ice is 920kg/m^3 and 1 cal = 4.184 J.
Tuesday, February 4, 2014 at 7:39am

science
plz any one i am abit confused can you answer these questions thx 05. The space surrounding a charge within which the influence of its charge extends is known as. (a) Electric field (b) Magnetic field (c) Line of force (d) Electric intensity 06. A region around a stationary ...
Tuesday, February 4, 2014 at 5:45am

Physics
plz any one i am abit confused can you answer these questions thx 05. The space surrounding a charge within which the influence of its charge extends is known as. (a) Electric field (b) Magnetic field (c) Line of force (d) Electric intensity 06. A region around a stationary ...
Tuesday, February 4, 2014 at 5:44am

Algebra 2
Can someone please check my answers? A card is randomly drawn from a standard deck of 52 cards. Find the probability of drawing the indicated card. 1.Not an ace. =12/13 2.A face card and a four. =4/13 3.A heart or a diamond. =1/2 4.A six or a seven. = 2/13 5.An ace and a spade...
Monday, February 3, 2014 at 8:08pm

Check essay, I added a little to it, thankies :)
Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing/equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be joyful, but for it to be joyful you...
Monday, February 3, 2014 at 7:12pm

Check my Essay: Rock Climbing
Rock Climbing Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing/equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be joyful, but for it to ...
Monday, February 3, 2014 at 6:36pm

Essay Key Points
So for school I have to write an essay over rock climbing, what are some key points that I should include in my essay? I am not asking anyone to write it or form any sentences, etc.,all I am asking is for some key ideas I could use, greatly appreciated, thenkies!! :D
Monday, February 3, 2014 at 5:56pm

Math
I need help with this really bad. At West Middle School, 30% of students have a dog, 20% of students have a cat, 10% of students have another kind of pet, and 40% of students have no pets. a) Explain how you can use a random-number table to find the experimental probability ...
Monday, February 3, 2014 at 5:14pm

social studies (CHECK ASNWERS)
please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few key leaders. C.It ended ...
Monday, February 3, 2014 at 1:44pm

History8
The spirit of national pride that developed during the Era of Good Feelings was reflected in the art from the _____________. a.The Enlightenment Era b.Hudson River school c.Renaissance Artists d.None of the above
Monday, February 3, 2014 at 1:36pm

Math
At West Middle School, 30% of students have a dog, 20% of students have a cat, 10% of students have another kind of pet, and 40% of students have no pets. a) Explain how you can use a random-number table to find the experimental probability that in a group of 5 students, at ...
Monday, February 3, 2014 at 1:21pm

Math
I need help with this really bad. At West Middle School, 30% of students have a dog, 20% of students have a cat, 10% of students have another kind of pet, and 40% of students have no pets. a) Explain how you can use a random-number table to find the experimental probability ...
Monday, February 3, 2014 at 12:54pm

Physics
I was wondering if my answers are correct. Thanks in advance. 1. A boy pushes down on a car rolling horizontally down the road. The boy pushes down vertically with 10N of force as the car rolls 3.0m horizontally. What work is done? my answer: 30 N•m (or would it be -30N&#...
Monday, February 3, 2014 at 12:16pm

physics
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 9.78 m more to travel before passing under the bridge. The stone hits the water 5.31 m...
Sunday, February 2, 2014 at 11:41pm

Science
Which of the following would be true during the inhalation phase of breathing? A. lungs are inflated, oxygen concentration is high, and carbon dioxide concentration is low in the alveoli. B. lungs are deflated, oxygen concentration is high, and carbon dioxide concentration is ...
Sunday, February 2, 2014 at 8:47pm

MATHS
Two different schools (A and B) have the same number of pupils. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. Find the ratio of the boys in school A to the girls in school A.
Sunday, February 2, 2014 at 8:14pm

Science
Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the body into the air D...
Sunday, February 2, 2014 at 8:05pm

Science
Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the body into the air D...
Sunday, February 2, 2014 at 6:59pm

law
Ron supervises delivery of flowers for a wholesale distributor of fresh flowers, Flowers. Inc. In order to accommodate one of the company’s best customers, Ron offers to immediately rush a delivery of fresh peonies. All of the delivery trucks are currently out on delivery...
Sunday, February 2, 2014 at 5:31pm

Politics
1. The heart of Martin v. Hunter’s Lessee was D A. whether treaties are supreme laws of the land. B. whether states’ rights trumped national authority. C. the right of Virginia to seize property of traitors during war. D. whether the Supreme Court had authority to ...
Sunday, February 2, 2014 at 1:27pm

Politics
1. The heart of Martin v. Hunter’s Lessee was A. whether treaties are supreme laws of the land. B. whether states’ rights trumped national authority. C. the right of Virginia to seize property of traitors during war. D. whether the Supreme Court had authority to ...
Sunday, February 2, 2014 at 11:41am

Science
1. A clementine in my fridge is covered with a nice blue-green lawn of mold, a common decomposer. Assuming that the clementine did not dry out, what do you predict is the weight of the clemintine and mold together compared to the starting weight of the clementine and WHY? 2. ...
Saturday, February 1, 2014 at 9:26pm

science
Where can I find information on Energy reformation for a middle school student to understand?
Saturday, February 1, 2014 at 9:20pm

math
on a mathematics test in high school, scores are normally distributed with a mean of 77 and a standard deviation of 16.8. A students is randomly selected.
Saturday, February 1, 2014 at 8:47pm

Chemistry
The FDA recommends that women who are pregnant avoid eating more than three 6.00-oz servings of bluefish per month because of the relatively high mercury levels in that type of fish. If bluefish contains 0.341 ppm of mercury (that is, 0.341 oz of mercury per 1×106 oz of ...
Saturday, February 1, 2014 at 3:37pm

COURSE HELP MEEE
Hi i want to be a pediatrician when i grw up so what course should i take in college ? im already in 3rd yr high school... in the philippines , as for me , i surpassed the k12 before they implement it and the next yr we our batch will be the lasy 4th yr hgh school students to ...
Saturday, February 1, 2014 at 10:26am

social studies(CHECK ASNWERS)
please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few key leaders. C.It ended ...
Friday, January 31, 2014 at 11:53pm

math
The 2008 yearbook at Middleton Middle School had 236 candid pictures of students.The 2007 yearbook had 214 candid pictures of students.To the nearest tenth, what was the percent of change in the number of candid student pictures from 2007 to 2008
Friday, January 31, 2014 at 4:53pm

socialstudies(CHECK ANSWERS)
PLEASE CHECK MY ANSWERS please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few ...
Friday, January 31, 2014 at 1:13am

help me with this language arts.
Multiple Choice 1. A court order that integrated the schools in a city would (1 point) bring students of different races together. close down the schools. keep students of different races apart. 2. Read the following passage from Through My Eyes: After the first day, I was ...
Thursday, January 30, 2014 at 6:22pm

English
How would you put the prologue of Romeo and Juliet by William Shakespeare from high style to low style? In other words how would you put slang into it?
Thursday, January 30, 2014 at 5:34pm

math
There are 480 students enrolled at school and 75% of those students buy their lunch in the school cafeteria. How many students bring their lunch? What percent of the students bring their lunch from home? How many students bring their lunch from home?
Thursday, January 30, 2014 at 3:31pm

social studies(check answers)
please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few key leaders. C.It ended ...
Thursday, January 30, 2014 at 1:50pm

English
I am doing descriptive writing how can i describe a shooting scene in a school? it needs to be detailed, chaotic and interesting
Thursday, January 30, 2014 at 1:30pm

SAT
Please help me. I am a foreign boy. English is not my first language. I find the SAT questions too tough. In my home land we did not learn much english in high school. How can I pass the SAT with a good score?
Thursday, January 30, 2014 at 1:09pm

Physics
An object is dropped from a platform100 ft high. Ignoring wind resistance, how long will it take to reach the ground?
Thursday, January 30, 2014 at 1:05pm

geometry
Dru is challenged by her geometry teacher to estimate the height of the school flag pole without measuring. She decided to walk off the length of the shadow cast by the pole by successively walking the noted length of her shadow. If dry is 5ft 6 in.tall and she estimates the ...
Thursday, January 30, 2014 at 11:10am

science
plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance. If the changes are in ...
Thursday, January 30, 2014 at 2:49am

science
plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance. If the changes are in ...
Thursday, January 30, 2014 at 2:48am

Physics
plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance. If the changes are in ...
Thursday, January 30, 2014 at 2:48am

Science
plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance. If the changes are in ...
Thursday, January 30, 2014 at 2:47am

social studies (CHECK ANSWERS)
1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few key leaders.(I PICK THIS) C.It ended the revolution. D.It lessened the power of the president. 2. It is hard for children in ...
Wednesday, January 29, 2014 at 11:02pm

Life Management: Please look, just give your opini
1. Which of the following foods are exempt from the food labeling law? *ready to eat foods as foods at a bakery, deli and/or candy store items packaged cereal, bread and crackers sodas fruit juice, milk and cheese 3. Which one of the nutrients listed below has a direct, proven...
Wednesday, January 29, 2014 at 9:52pm

Life Management
1. Which of the following foods are exempt from the food labeling law? *ready to eat foods as foods at a bakery, deli and/or candy store items packaged cereal, bread and crackers sodas fruit juice, milk and cheese 3. Which one of the nutrients listed below has a direct, proven...
Wednesday, January 29, 2014 at 8:48pm

Math
The white house, built 1792, is the oldest federal building in washington DC . The building has undergone extensive remodeling over the years. The main building is 4 stories high and is about 170 ft long by 85 ft wide. If a replica of the white house were made with a length of...
Wednesday, January 29, 2014 at 8:31pm

"Jiskha" Question
So who exactly answers any homework questions I have for school? IM just wondering ya'know?How reliable are the answers? ~fanofchan
Wednesday, January 29, 2014 at 7:23pm

history help plzzzzzz
1. What was the Trail of Tears? (1 point) the nickname given to Manifest Destiny by many Native Americans the battlefield where thousands of Cherokees were killed defending their home territory the path walked by Native Americans as they were forced to relocate to Indian ...
Wednesday, January 29, 2014 at 6:29pm

Science
A ball is thrown upward at 20 metres per second off the top of a building that is 12 m high. What is the height of the ball above the ground at its highest poin?
Wednesday, January 29, 2014 at 1:15pm

math
Quinn used a scale drawing to build a soccer field near his school. Initially, he wanted the field to be 28 yards long and 17.5 yards wide. He decided to change the length of the field to 36 yards. If the width is to be changed by the same scale factor, what is the new width ...
Wednesday, January 29, 2014 at 11:10am

Physics
A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?
Tuesday, January 28, 2014 at 9:45pm

Physics
A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?
Tuesday, January 28, 2014 at 9:45pm

math
the distance around the school is 5 and 1/2 miles how many times does jack have to go around the school to travel 330 miles
Tuesday, January 28, 2014 at 9:06pm

Statistics
WEB CALCULATOR EXERCISE Descriptive Statistics 1 The table below presents data for a sample of people who completed a religious survey. Age Gender Denomination Church Attendance 56 1 7 4 46 2 6 5 49 2 6 5 49 1 1 5 27 2 9 5 51 1 4 2 47 2 2 3 67 1 5 4 49 2 2 6 33 1 12 6 55 2 9 5...
Tuesday, January 28, 2014 at 8:56pm

Physics
A dirt biker races up a 15° incline and then takes off in an attempt to clear an obstacle. The end of the ramp is 3 m off the ground. A 4-m high obstacle is located 20 m from the base of the ramp. What minimum take-off speed is required for the daredevil to clear the ...
Tuesday, January 28, 2014 at 8:24pm

algebra 1
frosting a layer cake involves frosting the top, a middle layer and the outside. A typical cake has a 9 inch diameter and is 4 inches high. Calculate the surface area of the cake that is frosted
Tuesday, January 28, 2014 at 8:04pm

Algebra 1
Matthew's wading pool is 6-fet across and 18 inches high. How much water does it take to fill the pool a foot deep?
Tuesday, January 28, 2014 at 5:51pm

Math
I was out of school for 4 days! I tried to catch up but....I need help with There are 20 muffuns on a plate. 2/5 are chocolate. 3/10 are vanilla. How many chocolate how many vanilla? Challenge: Rest are blueberry how many blueberry? Can somebody answer this for me and show me ...
Tuesday, January 28, 2014 at 3:35pm

Physics
A small rocket is fired in a test range. It rises high into the air and soon runs out of fuel. On the way down it passes near an observer (sitting in a 22.5-m-high tower) who sees the rocket traveling at a speed of 37.9 m/s and moving in a vertical plane at an angle of 50.8&...
Tuesday, January 28, 2014 at 12:00am

physics
a projectile is ejected from a 25 m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume gravity on mars = .38gEarth) The ...
Monday, January 27, 2014 at 6:49pm

Plz help. :(
7. Select the skill-related component which is defined as the ability to combine strength and speed while you are moving. balance coordination *** power speed 8. At the paintball field, Wynonna is always the first one on her team to be hit with the paintball and put out of the...
Monday, January 27, 2014 at 5:11pm

PE-check my answers
7. Select the skill-related component which is defined as the ability to combine strength and speed while you are moving. balance coordination *** power speed 8. At the paintball field, Wynonna is always the first one on her team to be hit with the paintball and put out of ...
Monday, January 27, 2014 at 3:50pm

Statistics
The variance of the mathematical scores of a sample of 21 high school girls was found to be 100 and that of a sample of 25 high school boys was 169. Test the hypothesis that the scores of the high school boys are more varying that those of the high school girls at alpha = 0.05...
Monday, January 27, 2014 at 10:22am

Algebra
a rock is thrown upward with a velocity of 20 meters per second from the top of a 40 meter high cliff, and it misses the cliff on the way back down. when will the rock be 7 meters from the water, below? round your answer to two decimal places
Sunday, January 26, 2014 at 11:29pm

MATH
In a school library, there are 3 Chinese Language books for every 5 English Language books. The number of Malay Language book is 5/9 as many as the Chinese Language books. Find the ratio of the number of Malay Language books to the number of English Language books. (Express ...
Sunday, January 26, 2014 at 7:52pm

Math
The ratio of boys to the total number of students in a school play is 7:10. There are 9 girls in the school play. How many students are in the school play?
Sunday, January 26, 2014 at 2:29pm

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