# High School

Physics
A pole vaulter has 3500J of energy when he crosses a bar 7 metres high. How much kinetic energy will he have before he reaches the ground?

physics
who develops more power,an 80kg man who walks up a height of 20 steps each 17.5cm high in 7second or one who pushes an 80kg box up a frictionless slope to a height of 5m in 10seconds? Give a reason for your answer

science
2. A salamander is a keystone species in a forest ecosystem with high biodiversity. This species migrates from woodland areas to a local stream to reproduce. If a road is built that cuts off the woodland areas from the stream, what effect will this have on the forest ecosystem...

science
Just checking my answers.. 1. Which is not a characteristic of the Group 1 alkali metals? A. high densities B. low melting points*** C. found in batteries D. silvery solid 2. Which of the following is true of the Group 2 alkali earth metals? A. They are less dense than the ...

Health
1. According to the National Clearing House for Alcohol and Drug Information (NCADI), most children under the age of _____ , who do not participate in drug and alcohol abuse, is virtually certain to never do so. (1 point) 20 21 23 19 2. The average age when youth first try ...

algebra question
Please help me on this!!! so confused The table below shows data from a survey about the amount of time high school students spent reading and the amount of time spent watching videos each week (without reading): reading video 5 1 5 4 7 7 7 10 7 12 12 15 12 15 12 18 14 21 15 ...

PHY-102
A construction worker on a high-rise building is on a platform suspended between two cables as illustrated below. The construction worker weighs 850 N, the plank weighs 450 N, and the tension in the left cable is 550 N. a. What is the tension (in N) in the right cable? b. ...

school
A ball thrown vertically upward reaches a certain height and comes down again. What can you say about its kinetic energy at the maximum height?

Science
Which Idea Is Conveyed In Both "Dust Of Snow" and Who Knows If The Moon's A.Nature can be playful B.Nature can be harsh C.Nature can be annoying D.Nature can be mysterious To Which Sense Do Both "Who Knows If The Moon's" and "Dust Of Snow Appeal Most Strongly A.Hearing B.Sight...

biology
Picture true of false The atom shown in the diagram has 4 energy levels or shells. 2. The atom shown in the diagram above has a total of 5 electron orbitals. 3. Each energy level consists of 2 or more orbitals. 4. The second energy level consists of 4 electron orbitals. 5. ...

Math
A rock is thrown upward with a velocity of 24 meters per second from the top of a 50 meter high cliff and it misses the cliff on the way back down. When will the rock be 7 meters from the water below

Statistic
The mean SAT score for 13 male high school students is 500 and the standard deviation is 100. The mean SAT score for 16 female high school students is 490 and the standard deviation is 80. At o=.05 sigma sign are male SAT scores more varied than female? (Sigma=.05)

Biology
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

Math
The length of one side of the school building is 100 feet. if you use a scale factor of 1:250, what is the length of your scale drawing? Please help me and explain how you get your answer!

Math
At East Middle School, 28% of the students are in the band. If 168 students are in the band, how many students go to East Middle School?

Science
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

Statistics
2.5 Points 30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a ...

Is a 95% an A- or an A on an average grading scale just wondering cuzz im geting 95% and want to know

The speed limit near a school is 30km/h but Joe Cool thinks he can ignore it. He is driving at 60km/h. To make matters worse, he is talking on his cell phone. Suddenly a child rides his bicycle out of school grounds and across the road on the pedestrian crossing. The maximum ...

math
Your school is organizing a carnival. You are building a ramp for a game. The ramp will be 8 feet long with a total rise of 5 feet. Find the angle of elevation of the ramp.

Biology /science
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

Social Studies (Check)
1. What was the effect of the French defeat at Dien Bien Phu? A: The defeat at Dien Bien Phu convinced the French to make peace and withdraw from Indochina. 2. What tatics did the United States adopt to fight the Vietcong? A: To fight the Vietcong, American troops went on “...

Personal learning plan (english?)
What are some visual, auditory, reading/writing and kinaesthetic learning activities done in high schools?

Science
1. A roach moves down the hall at 1.2 m/s. When he sees the janitor coming down the hall, he begins to run. After 3.2 s, he is moving at 3.6 m/s. What is his acceleration? 2. While waiting for his Mom to come out of the hairdresser's, Sean accidentally puts the car in gear and...

Biology
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

science
A ball rolls off the edge of a tabletop and then lands on the floor 80 cm away from the base of the table. if the table is 1.20 high what is the initial velocity?

Physics Help!!!
A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the tennis ball clears the ...

physics
A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the tennis ball clears the ...

physics
A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the tennis ball clears the ...

plumbing
if abuilding is 12m high and the pressure needed at the top is 400kpa what is the required pressure at the meter?

Maths
If 40% of pupils in a school are boys what percentage are girls?

salag national high school
If a ship has only 5 flags and 2 of them are alike w/ which to send signals,how many different signals can be sent if all flags are used?

Calc
A ball is launched straight up from the edge of a cliff that is 250 m high. The ball's motion is given by s = 35t - 4.9t^2 where s is the ball's height in meters above the cliff top at time t seconds. With what velocity does the ball strike the ground at the base of the cliff...

physics
A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the tennis ball clears the ...

calculus 1
the average temperature in Hartford can be expressed as t = f(m) where m is month (January = 1, etc.) and t is the average daily high temperature for the month in degrees F. 1) what is the meaning of f'(m)? rate of change of the average temperature (in degrees F) as the month ...

Physics
Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high

physics
A game of tennis... A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the ...

physics
A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the tennis ball clears the ...

thermodynamics
2. If a pump discharges 284 liters per minute of water whose density is 985 kg/m3 . Find (a) mass flow rate in kg/min; (b) the total time required to fill a vertical cylindrical tank 3.05 m in diameter, and 305 m high. Note: m = Q x ρ, where m= mass, Q=volume flow rate...

Math
Teresa spends 1/3 of her day at school. She spends 1/12 of her day eating meals. What fraction of the day does Teresa spend at school or eating meals?

Math
At a school, 15% of the students play an instrument. How many students do not play an instrument?

Statistics
A school experiments with two teaching approaches for mathematics. In one classroom the material is taught using lectures only. In the other classroom lectures are mixed in with the use of manipulatives, computers, and collaborative activities. Do the data below support the ...

Statistics
A school experiments with two teaching approaches for mathematics. In one classroom the material is taught using lectures only. In the other classroom lectures are mixed in with the use of manipulatives, computers, and collaborative activities. Do the data below support the ...

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 variable I know the equation stuff I just need help with the ...

social studies
Soon after arriving at Jamestown, the colonists were attacked by the Algonquian natives. Within a month, the colonists built a triangular-shaped, wooden wall to defend their small settlement, which consisted of a storehouse, church, and several houses. Disease, famine, and the...

Science
The following chart shows the Baffin Bay high and low tide heights for four consecutive days. Describe the changes in the heights of the high and low tides from Monday morning to Thursday night.

math
At a school camp, 30% of the students were boys. When 87 students left the camp after the second day, half the original number of boys were left behind and the number of girls decreased by 20%. How many girls were at the camp in the beginning.

burns highs school
f(t) = −16t2 + 160t + 26 and the height in feet of the higher-traveling second flare is given by g(t) = −16t2 + 178t + 39, after t seconds.

Mathematics
The points scored in a basketball game by the individual players of two teams, High Rangers and Rising Stars, is recorded during the game. After the game, the manager found that the range for the High Rangers is 20 points and the range for the Rising Stars is 4 points. Which ...

science
A stone from a window with an initial horizontal velocity of 10m/s. If the window is 20m high, and the ground is level, how many seconds will the stone reach the ground? How far on the ground will it reach?

Physics
A ball is projected horizontally from the edge of a table that is 1.14 m high, and it strikes the floor at a point 1.40 m from the base of the table. It's initial velocity is 2.9 m/s. How high is the ball above the floor when its velocity vector makes a 43.6o angle with the ...

Physics
A stone is dropped from the roof of a high building. A second stone is dropped 1.08s later. How far apart are the stone when the second one has reached a speed of 15.0?

Statistics
Achusband and wife with brown eyes who have 0.75 probability of having children with brown eyes, 0.125 probability of having children with blue eyes, and 0.125 probability of having children with green eyes. (a) What is the probability that their ﬁrst child will have ...

precal
She doesn't know the exact route to her friends house. She knows that the route is 3 blocks to the first turn, 2 blocks to the second turn and then 1 block further. She can walk east, west or north when she leaves school and the blocks are 1/8 mile long. What is the farthest ...

lang art
1. Which question best relates to these details in "Winter"? Frogs burrow the mud / snails bury themselves (1 point) What happens to frogs in the winter? How do animals differ from people in the winter? Why do snails bury themselves? How do creatures prepare for winter? 2. ...

Calculus
one top of a tower 50 m high is clock 3m in diameter. where a man 5 feet 6 inches stand on the ground so that he could have a possible view of the clock.

science
A researcher wants to develop a new pharmaceutical compound to treat pain. Which of the following strategies will likely be the most effective process? A. Test extracts from newly discovered plants for pain-killing substances. B. Read anthropological studies to discover plants...

Basic Statistics
home / study / questions and answers / math / statistics and probability / the manager of a vacation resort has claimed that, ... Question The manager of a vacation resort has claimed that, on average, a guest spends at least \$1600 at the resort during a one week stay, ...

Physics
A digital voltmeter with high internal resistance gives a maximum reading of 2.0 V. It is used to determine current by measuring the potential difference across a standard resistor S through which current has passed. What should the resistance of S be to measure currents up to...

Physics
A high voltage unit has an internal resistance of 50 mega ohms. On open circuit, the potential difference across its output is 3000 V. When a resistor R is connected across its output, the potential difference at the output falls to 1000 V. Calculate the resistance of R.

MAth
the high soccer team can have no more than 26 players.write and solve an inequality to determine how many more players can make the team if the coach has alreadychosen 17 players. i need the inquality,interpretation,solution

Socialstudies
1. What was described as the ' hardest work " slaves did ? ( 1point ) A. work in the rice fields B . Work in the tobacco fields***** C. Work in the lumber business D. Work loading and unloading ships in port 2. which of the follow best describes the social class of a small ...

Social Studies (Check) (Reed)
Describe how and why the suburbs became popular places to live. A: Suburbs became popular places to live as the GI Bill offered low-interest loans, making new housing more affortable during the postwar period than at any other time in American history. They were so popular, in...

Physics
A rocket is fired at a speed of 76.4 m/s from ground level, at an angle of 61.0° above the horizontal. The rocket is fired toward an 10.6 m high wall, which is located 26.2 m away. By how much does the rocket clear the top of the wall?

english,zulu,math lit,geography,life sciences,life orientation and history
2016 is my last year at school but am still confused about my career couse i don't know what i want to be in life so pls help

Social studies
Homework Help: history Posted by crazygood on Tuesday, February 18, 2014 at 11:13am. 1. What was described as the ' hardest work " slaves did ? ( 1point ) A. work in the rice fields B . Work in the tobacco fields C. Work in the lumber business D. Work loading and unloading ...

Physics
So A rookie quarterback throws a football with an initial upward velocity component of 16.4 m/s and a horizontal velocity component of 19.8 m/s . Ignore air resistance. a) How much time is required for the football to reach the highest point of the trajectory? b) How high is ...

math
Three candidates in a school election for head boy received 350,295 and 855 respectively. What percent of the total votes did the winning candidate receive?

Calculus
A stone is thrown straight up 6 feet from the ground (it is released 18 feet above the ground). When it is released it is travelling at the rate of 100 feet per second. a) Find the velocity function. b) Find the position function. c) How high does the stone go? d) How long ...

Please provide a short summary of your approach to business development and the methods that you use. this is not for school im just confused with the question

Will someone help me with the first two questions and then check the rest? 1. What were two causes and effects of the economic boom of the 1950s? A: ? 2. How did the television industry affect the U.S. economy? A: ? 3. Describe how and why the suburbs became popular places to ...

High school
. A cement manufacturer has a cost of production of \$28 for each bag of cement produced and the sells a bag of cement for \$40. The monthly fixed cost of the manufacturer is \$180,000. a. Derive the monthly cost function of the manufacturer? b. Derive the monthly revenue ...

I really need help asap with my subjective letter for my NJHS Application. Please answer fast- it is due tomorrow!! --- To the National Juniors Honor Society: I express my gratitude for selecting me, Sandra Garcia, as a possible member of the National Junior Honors Society (...

Will someone help me with the first two questions and then check the rest? 1. What were two causes and effects of the economic boom of the 1950s? A: ? 2. How did the television industry affect the U.S. economy? A: ? 3. Describe how and why the suburbs became popular places to...

Geometry
In a class of 50 high school juniors, 32 students either play a sport or are in the marching band. There are 22 juniors who playa sport and 16 who are in the marching band. What is the probability that a randomly selected junior plays a sport and is in the marching band The ...

Science physics
What is the magnitude of average force a pole vaulters exterts on a landing bag if it's 1.5 meters high and deforms by 0.5 M=60kg Height of the bar=4.5m His centre of mass is 1m

physics
A rocket is fired at a speed of 92.0 m/s from ground level, at an angle of 33.0 ° above the horizontal. The rocket is fired toward an 13.4-m high wall, which is located 26.0 m away. The rocket attains its launch speed in a negligibly short period of time, after which its ...

Language
Frogs burrow the mud snails bury themselves and I air my quilts preparing for the cold Dogs grow more hair mothers make oatmeal and little boys and girls take Father John's Medicine Bears store fat chipmunks gather nuts and I collect books For the coming winter 2. Which ...

math
If 60% of the students is a school are boys and the number of girls is 972, how many boys are there in the school?

science
why did not expose theaerasolto a high temparature

science help PLS
Which of the following is a sign of poor quality water? Zero turbidity A pH of 7.0 High phosphate content High dissolved oxygen is it d

Math
while training for cross country, Janay ran every day after school Monday through Thursday. Each run was 1.2 miles long. How many feet did she run?

science help PLS
Which of the following is a sign of poor quality water? Zero turbidity A pH of 7.0 High phosphate content High dissolved oxygen is it d

Algebra
Wanda has a fishtank that is 2 feet long, 3 feet wide, 4 feet high. If she pours 20 cubic feet (feet3=ft3) what it the height of the water level in the tank? Round answers to the nearest hundredth.I think it is 480 feet3

Algebra
Wanda has a fishtank that is 2 feet long, 3 feet wide, 4 feet high. If she pours 20 cubic feet (feet3=ft3) what it the height of the water level in the tank? Round answers to the nearest hundredth

Science
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 have enough energy to ...

Economics
What is one advantage of a centrally planned economy? A. low unemployment due to guaranteed jobs*** B. high levels of consumer satisfaction C. quick adjustment to changing conditions D. incentives for workers have new ideas

science
A boy is standing at the top of the a building, 40 m high. He leans over the side and throws a pebble vertically upwards from the edge of the building at 12m.s^-1. The pebble reaches the ground at the foot of the building. Calculate time for the pebble to reach the ground

Economics
What is one advantage of a centrally planned economy? A. low unemployment due to guaranteed jobs B. high levels of consumer satisfaction C. quick adjustment to changing conditions*** D. incentives for workers have new ideas

Science
1. what is the momentum of a 20.0 kg scooter traveling at 5.00 m/s? 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s 2. Which of the following describes the relationships between friction and inertia? when there is more friction, there is less inertia when there is less friction...

math
A 40 foot long escalator rises from the first floor to the second of a shopping mall. The escalator makes a 30 degree angle with the horizontal. How high above the first floor is the second floor?

Math
There are 250 students in the school auditorium for an assembly. 24% of the students are 5th graders. How many 5th graders are in the auditorium?

Biology
Wine is made by mixing yeast with grapes and allowing the yeast cells to undergo fermentation. Sparkling wine is a type of wine that contains high levels of dissolved carbon dioxide. What is the source of the carbon atoms in the carbon dioxide found in sparkling wine? ethanol ...

Physics HELP!!
From the top of a cliff overlooking a lake, a person throws two stones, as shown in the drawing. The cliff is 39.2 m high. The two stones described have identical initial speeds of v0 = 19.2 m/s and are thrown at an angle θ = 29.2 °, one below the horizontal and one ...

Physics
From the top of a cliff overlooking a lake, a person throws two stones, as shown in the drawing. The cliff is 39.2 m high. The two stones described have identical initial speeds of v0 = 19.2 m/s and are thrown at an angle θ = 29.2 °, one below the horizontal and one ...

math
The salary scale in three school districts are as follows, for a teacher with a master’s degree: District P: \$30,000 plus \$1500 for each year of experience District Q: \$30,000 plus \$1750 for each year of experience District R: \$28,000 plus \$1750 for each year of experience a...

college pre-calc
Would a truck that is 12 feet tall and 9 feet wide fit through a parabolic arch that is 15 feet high at the high point and 16 feet wide?

physics
A ball is thrown vertically upward with a speed of 19.0 m/s. (a) How high does it rise? (in meters) (b) How long does it take to reach its highest point? (in seconds)

LA Help
"The Rider" A boy told me if he rollerskated fast enough his loneliness couldn't catch up to him. the best reason I ever heard for trying to be a champion. What I wonder tonight pedaling hard down King William Street is if it translates to bicycles. A victory! To leave your ...

Math
It takes Beth 15 minutes to walk to school, 1/2 mile away. What is her walking pace?

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