Sahar
Most popular questions and responses by Sahar
Physics
At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.6 m/s. A player cannot touch the ball until after it reaches its maximum height and beings to fall down. What is the minimum time that a player must wait before
asked on November 3, 2013 
Geometry
Find the precision for each measurement. 120 meters, 7 1/4 inches, 30.0 millimeters
asked on August 29, 2016 
kctcs
the ball thrown the brick wall bounces directly back with the same speed it had when it struck the wall . has the velocity of the ball change explain ?
asked on February 5, 2013 
maths
Hexagonal tiles of sides20cm are used to tile a room which measures 6.25m. Assuming we complete the edges by cutting up tiles, how many tiles are needed?
asked on February 5, 2012 
chemistry
draw a diagram showing the arrangement of the valency electrons in one molecule of the covalent compound selenium chloride. use x to represent an electron from an atom of selenium. use o to represent an electron from an atom of chlorine
asked on November 22, 2011 
Physics
At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.6 m/s. A player cannot touch the ball until after it reaches its maximum height and beings to fall down. What is the minimum time that a player must wait before
asked on November 3, 2013 
Calculus
Consider the function below. f(x) = [1(4/x)]^x (a) Use a graph to estimate the value of the limit of f(x) as x approaches infinity. (Round the answer to two decimal places.) (b) Use a table of values of f(x) to estimate the limit. (Round the answer to
asked on September 30, 2009 
math
Jenna has $1500 in a savings account. She adds $30 to her account each month. Luis has $2400 in his savings account. He withdraws $30 from his account each month. Write and solve a system of equation.
asked on November 8, 2012 
Math
The Cost of grassing a square lawn at 1.35 per m suare is 72037.35.Find the cost of fencing with two times at rs 2.85 per m.
asked on August 25, 2017 
Physics
At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.6 m/s. A player cannot touch the ball until after it reaches its maximum height and beings to fall down. What is the minimum time that a player must wait before
asked on November 3, 2013 
Physics
At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.6 m/s. A player cannot touch the ball until after it reaches its maximum height and beings to fall down. What is the minimum time that a player must wait before
asked on November 3, 2013 
Chemistry  General
1. Consider a calorimeter into which 135g of water at 45.3 degrees Celsius is added. The initial temperature of the calorimeter was 23.8C and the equilibrium temperature of the water and the calorimeter is 39.6C. Assuming there is no heat loss to the
asked on July 24, 2009 
English
1. How does the fact that Anne tries to maintain a positive attitude affect the way readers view her? Please include textual evidence in your answer as well as what page number you found it on.
asked on March 4, 2015 
Physics
A certain insect’s wing has been shown to deflect a distance 14.8 mm under a force of 0.19 N applied to the end of the wing. (a) If the wing is assumed to behave as an ideal spring, calculate the force constant in N/m. (b) At this deflection, how much
asked on April 21, 2016 
Chemistry  General, Hess's Law
In an experiment, 11.6g of a salt was dissolved in 100.0ml of water contained in the above calorimeter, all at an initial tmperature of 24.5 degrees Celsius. After dissolution was complete, the temperatur was 31.8C. The specific heat of the solution is
asked on July 24, 2009 
Physics
A crane lifts a package of mass 121 kg. If the power output of the crane is 101 Watts, at what speed can the package be lifted, in m/s?
asked on April 21, 2016 
Math
The Cost of grassing a square lawn at 1.35 per m suare is 72037.35.Find the cost of fencing with two times at rs 2.85 per m.
asked on August 24, 2017 
chemistry
Name a reagent that will react with a) copper(II)hydrooxide and aluminium hydroxide b)aluminium hydroxide but not copper(II)hydroxide 2)suggest how you could separate a mixture of silicon(IV) oxide and magnesium oxide 3)Name a reagent that could react with
asked on September 17, 2011 
Physics
A jet of mass 4,768 kg lands on an airstrip, stopping after a distance of 414 m. If the jet has an initial landing speed of 36 m/s, what is the work done, in Joules, by nonconservative forces to stop the jet?
asked on April 21, 2016 
science
when two equal forces of f1 and f2 making an angle of 180 degree with each other the magnitude of their resultant is ................?
asked on November 9, 2016 
physics
A race car moving at 157km/hr decelerates at 7.00 m/s^2 to a speed of 75.0km/hr A) how long did this take? B) how many meters did the car travel during this deceleration? I attempted this problem many times and i don't seem to get the correct answer
asked on January 6, 2015 
math
you have an unlimited supply of 5% saline solution and 8% saline solution. How much of each type would you have to use to create 60 ounces of 7% saline solution? Write and solve a system of equations to model and solve this problem.
asked on November 8, 2012 
math
2x^25x12=0 solve by completing the square. please explain how it's sovled.
asked on September 10, 2013 
Physics
Two masses, mass A (1.9 kg) and B (3.3 kg) are hung on either side of a pulley. The masses each have an initial speed of 0.8 m/s, with mass B moving up. How high, in m, does mass B move after being released at this initial speed?
asked on April 21, 2016 
physics
which statement is true about weight 1) pull of earth on a body 2) mass of a body 3) scalar quantity 4) unit per kilogram
asked on November 25, 2011 
math
teemu's tshirts designs and manufactures tshirts for a $15 flat design rate and $7.50 for each tshirt.he wants to sell his tshirts to the senior class for their graduation party. he is going to charge them $10 for each tshirt. write a function,c,
asked on October 1, 2012 
math
order these from least to greatest,5/9,2/7,1/8
asked on November 7, 2016 
math
2x^25x12=0 solve by completing the square. please explain how it's sovled.
asked on September 10, 2013 
physics
which statement is true about weight 1) pull of earth on a body 2) mass of a body 3) scalar quantity 4) unit per kilogram
asked on November 25, 2011 
geometry
find the area of the garden drawn below.
asked on April 10, 2011 
PHYSICS NEED HELP ASAP
A race car moving at 157km/hr decelerates at 7.00 m/s^2 to a speed of 75.0km/hr A) how long did this take? B) how many meters did the car travel during this deceleration? I attempted this problem many times and i don't seem to get the correct answer
asked on January 6, 2015 
education
sand, rocking chairs, animals, and strap swings are examoles of a__ environment. a) static b) soft c) creative d) hard. would the answer be d) hard
asked on March 19, 2013 
math
teemu's tshirts designs and manufactures tshirts for a $15 flat design rate and $7.50 for each tshirt.he wants to sell his tshirts to the senior class for their graduation party. he is going to charge them $10 for each tshirt. a) write a function,c,
asked on October 1, 2012

high school algrebra 1
What’s the dependent and independent for this situation? And create a table and graph please help me I really need the answer for this problem.:(
posted on September 18, 2019 
Algebra I
h=16t^2+100t+40
posted on June 14, 2018 
math
tell me
posted on September 12, 2017 
Math
4767.84
posted on August 25, 2017 
stats
1. Use the table below to help you construct a probability distribution for all of the possible values of X and their probabilities 2. Find the expected value of X, and interpret it in the context of the game. 3. If you play in such a raffle 100 times,
posted on October 31, 2015 
math
5x6y+30=o
posted on July 25, 2012 
maths
Its rectangular room of 6.25m by 4.85m
posted on February 5, 2012 
Math
812 divide by 9 is 90 because you estimate
posted on October 7, 2010 
chemistry.
all of above is wrong. i have the same question for school.
posted on February 16, 2010