# Posts by ANDREA

Total # Posts: 887

chemistry
is the answer 1,663,558.4 J

world history
Why is increased interregional trade a factor that represents the most significant cause of growth of cities in Afro-Eurasia in the period 1000-1450?

Physics
a ball is released from rest and rolls down in an inclined plane, requiring 4 sec. to cover a certain distance of 100m. a) what is the acceleration? b) how many cm would it have fallen vertically in the same time?

Physics
a bomb is dropped from an airplane travelling horizontally with a speed of 300 mi/hr if the airplane is 10000ft. above the ground, how far from the target must it be released, neglect friction?

Physics
the speed of the train is reduce uniformly from 15m/s to 7m/s while travelling a distance of 90m. a) compute the acceleration b) how much further will the train travel before coming to rest provided the acceleration remain constant.

Physics
a bus moving at a speed of 20m/s begins to slow at a constant rate. Find how far it goes before stopping?

Physics
a stone falls from a rail road overpass which is 36ft. high into the path of the train which is approaching the overpass with the uniform speed, if the stone falls when the train is 50ft. away from the overpass and the stones hits the ground just as the train arrives at the ...

Math
draw a line segment AB to be 3 cm long. the, draw line segment DC so that it is congruent, but not parallel, to line segment AB

nutrition
A--> Had a a helping verb, rested is the very

math
the favorite foods of a selected group of 5 year olds. A total 5,280 childern were polled. How many children chose pizza? 40% were pizza, pasta 30%, cheese 12%, french fries 14% undecided 4%

math
the favorite foods of a selected group of 5 year olds. A total 5,280 childern were polled. How many children chose pizza? 40% were pizza, pasta 30%, cheese 12%, french fries 14% undecided 4%

business math
Vail Ski Shop received a $1,201 invoice dated July 8th wiht 2/10, 1/15, n/60 terms. On July 22, Vail sent a$485 partial payment. What credit should Vail receive? What is Vail's outstanding balance?

business math
Vail Ski Shop received a $1,201 invoice dated July 8th wiht 2/10, 1/15, n/60 terms. On July 22, Vail sent a$485 partial payment. What credit should Vail receive? What is Vail's outstanding balance?

business math
How do you find the amount deducted from Social Security and Medicare from a check? How do you find a percent of a noninterest simple discount note?

math
Vail Ski Shop received a $1,201 invoice dated July 8th wiht 2/10, 1/15, n/60 terms. On July 22, Vail sent a$485 partial payment. What credit should Vail receive? What is Vail's outstanding balance?

math
calculate the average daily balance from the following(30-day billing cycle) 7-21 billing date previous balance $400 7-28 payment$40 credit 7-31 charge $60 8-6 payment$10 credit 8-13 cash advance $50 statistics x= 70 115 105 82 93 125 88 y= 3 45 21 7 16 62 12 compute r using the computation formula nearest thousandth statistics x= 70 115 105 82 93 125 88 y= 3 45 21 7 16 62 12 compute r using the computation formula nearest thousandth math Bill Spread, owner of the Bedding Shop, knows that his customers will pay no more than$300 for a comforter. Assume Bill wants a 30% markup on selling price. What is the most he could pay the manufacturer. for thid comforter?

Mat
What is mean median and mode

statistics
Pardon me... approximately zero if the standard deviation is 0.2 ozs.

statistics
Actually, I believe it's approximately zero. Source: I have a MS in Mathematics

physics
A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10−2 and direction perpendicular to the rod. The magnetic force on the rod is measured by ...

physics
A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10−2 and direction perpendicular to the rod. The magnetic force on the rod is measured by ...

physics
One end of a massless coil spring is suspended from a rigid ceiling. It is found that when a 4 kg mass is suspended from it the spring stretches 90 mm when the mass comes to rest. (a) What is the spring constant for the spring B)If the mass is then pulled down an additional ...

Science
I don't know

physics
A 10 N horizontal force pushes a block weighing 4.9 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.55, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving initially. In unit-vector ...

5th grade math
First,you have to multiply 75x120.Next,you have to multiply 0x5.Then do all of the steps to get the answer.

physics
A sign that has a mass of 10.0kg is suspended by two wires, as shown below. (wire 1 is at a 40 degreee angle with the sign, wire 2 is at no angle) Determine the force exerted by each wire in supporting the sign. \in cluse a free-body diagram as part of your response.

Chemistry
What is the molarity of H2SO4 in a solution prepared by adding 15.0 mL of 6.0 Molarity H2S04 to enough water to make 100.0 mL of solution?

Chemistry
so is this an inverse relationship?

CHEMISTRYYYY HELP
A sample of gold ore contains 22.0 g of gold metal per 100kg of ore. If gold has a market value of $350.00 per oz., what mass of ore, in tons, must be refined to get one million dollars worth of pure gold? Chemistry PLEASE an empty 3.5 L container weighs 650 g when empty. When filled with a 3.5%, by mass, of salt solution, the total mass then is 3.375 kg. How many grams of salt are there in the solution in the container? Ashford false chemistry Based on how the indicator phenolphthalein worked in Lab III, explain why the golden rod paper turned color when sprayed with Windex (a base) and changed back to the golden rod color when treated with vinegar (an acid) in the demonstration in class. chemistry If 0.694 grams of pure KHP are needed to exactly neutralize 30.5 mL of a calcium hydroxide solution, what is the concentration (in molarity) of the base solution? chemistry this is the right anwer so d= 3.21 x 10^(-10) m Calculus Shadow Length A man 6 feet tall walks at a rate of 3 ft per second away from a light that is 16 ft above the ground (see figure). When he is 11 ft from the base of the light find the following. (a) The rate the tip of the shadow is moving. (b) The rate the length of his shadow... algebra/math Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 100 people. a) How many would you expect to be between 158 and 172 cm tall? b) How many would you expect to be taller than 160 ... math yeah, thank you! Precal Consider the line segment joining A(-1,2) and B(3,4) a) find an equation that expresses the fact that a point P(x,y) is equidistant from A and from B. b) describe geometrically the set of points described by the equation in part (a). Language art What is a group of people at a dance with letters bssmyale Med terms spudum = sputum CODP = COPD AFONIA = APHONIA CHRONIC CONSTRUCTIVE PULMONARY DISEASE = CHRONIC OBSTRUCTIVE PULMONARY DISEASE DOT = DOB EUPNEA = APENA VENTOLATOR = VENTILATOR DYSPHNEA = DYSPNEA PARIOXYSM = PAROXYSM DAILYS = DAYS christian counseling Hello, I actually am reading the d**** books thanks I was just wondering about the topic if I was on the right track for when I write my paper if they both talked about abandonment critisicm. I have a learning disability thanks. christian counseling Hello, in the two books Love and Respect by Eggrichs and Why you do the things you do: The secret to a healthy relationship by Tim Clinton, what are some topics that are used in both books. thanks Business Is it good or bad for corporations to rely on vendors for computing support? List arguments both for and against reliance on vendors as part of your answer. Math X -2, 0, 3, 4 Y 6, -2, -14, -18 Write the function Math Simplify: 21d - 8d^2 + 5d^3 - 5d^2 Math A number cube is rolled 60 times. How many times would you expect to roll a 5? Math Write the perfect squares that are greater than 70 and less than 120. algebra A gardener wants to create a triangular garden in the shape of a right triangle with shortest side length x – 2y ft. and the middle length side x + 4y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out and express in simplest ... Algebra 2 If a 20 in. by 30 in. picture has a wooden frame "x" in. wide surrounding it, which equation can be used to find the total area of the picture and frame? childcare HERE R THE CORRECT ANSWERS; 1-D PAGE25 2- 3-B PAGE18 AND 19 4- 5-C PAGE15 6-A PAGE 30 7- 8- 9-D PAGE 21 10- 11-B PAGE 20 12-C PAGE 10 13-B PAGE 10 14- IM NOT REALLY SURE BCZ IN PAGE 19 SPECIFY THAT CHILDREN OF AGE 6TO 8 THEY CAN TAKE CARE OF THEIR OWN PERSONAL NEEDS BUT ON THE... Statistics z Score: When Reese Witherspoon won an Oscar as Best Actress for the movie Walk the Line, her age was converted to a z score of -0.61 when included among the ages of all other Oscar-winning Best Actresses at the time of this writing. Was her age above the mean or below the ... Statistics America Online occasionally conducts online polls in which Internet users can respond to a question. If a graph is constructed to illustrate results from such a poll, and the graph is designed objectively with sound graphing techniques, does the graph provide us with greater ... Statistics Unauthorized Downloading: A Harris Interactive survey involved 1644 people between the ages of 8 years and 18 years. The accompanying table summarizes the results. Does this table describe a relative frequency distribution? Why or why not? Downloaded Material Percent Music 32... Statistics The production of ages at inauguration of all U.S. Presidents who had professions in the military is 62, 46, 68, 64, 57. Why does it not make sense to construct a histogram for this data set? Statistics In an editorial, the Poughkeepsie Journal printed this statement: "The median price--the price exactly in between the highest and lowest--..." Does that statement correctly describe the median? Why or why not? Statistics When the Indianapolis Colts recently won the Super Bowl, the numbers on the jerseys of the active players were 29, 41, 50, 58, 79,..., 10 (listed in the alphabetical order of the player's names). Does it make sense to calculate the mean of those numbers? Why or why not? geometry what measure of an exterior angle of a hexagon? a)45 B)60 C)120 D)150 Biology . Ahh , help me with this question please summarize how unicellular organisms may have given rise to the first animals ? Please , & thank you(: 3rd grade math my daughter came home with input/output table don't understand how to do it Input Output 4 33 5 36 11 54 16 69 Math The capacity of a measuring pitcher is 96 fluid ounces. How many quarts can the pitcher hold? Calculus the height of an object thrown on the surface of a certin planet is s(t)=80t-16t^2. what is the velocity? what is the acceleration? when is the velocity zero? Chemistry 0.05 L Math Alicia went on a steamboat ride up the Mississippi River. The boat travels 24 miles per hour in still water. How long will it take her to travel 48 miles upstream if the current of the river is 8 miles per hour? social studies what are two homework questions about pope leo III???? Physics : drwls (Please Help Me) yeah the graph they gave me was triangle shape was above the x-axis. the two ends of the legs are touching the x-axis but does not cross all the way to the negative side. Physics In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why. Physics : Please Help Me!!! In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why. science how do i figure out the science metric conversion of .003 m = mm? science what is the answer to the problem .003m = mm? physics The International Space Station, launched in November 1998, makes 15.65 revolutions around the earth each day in a circular orbit. Apply Newton's second law to the space station and find its height (in kilometers) above the earth's surface. Chemistry - Enthalpy change and stoichiometry how to calculate enthapy change of products English Is there euphony, cacophony, onomatopoeia in the poem Phenomenal Woman by Maya Angelou? Examples are needed. physics One of the tenets of the pseudoscience (i.e., "false science") of astrology is that, in some mysterious way, the positions of the planets at the time of a person's birth somehow influence the characteristics of that person. To see if this proposition seems ... physics A block slides a distance d down a frictionless plane and then comes to a stop after sliding a distance s across a rough horizontal plane. What fraction of the distance s does the block slide before its speed is reduced to one-third of the maximum speed it had at the bottom of... physics Consider two frictionless inclined planes with the same vertical height. Plane 1 makes an angle of 25.0 degree with the horizontal, and plane 2 makes an angle of 55.0 degree with the horizontal. Mass m_1 is placed at the top of plane 1, and mass m_2 is placed at the top of ... physics Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is zero, then either the force or the ... physics A 15.0 kg stone and a 150 kg stone are released from rest at the same height above the ground. There is no appreciable air drag. Which of the following statements is or are true? (More than one statement may be true.) A. Both stones have the same initial gravitational ... physics A 1.00 g grasshopper and a 0.100 g cricket leap vertically into the air with the same initial speed in the absence of air drag. Which of the following statements must be true? (More than one statement may be true.) A. The grasshopper goes 10 times as high as the cricket. B. ... physics Two balls having different masses reach the same height when shot into the air from the ground. If there is no air drag, which of the following statements must be true? (More than one statement may be true.) A. Both balls left the ground with the same speed. B. Both balls left... college Given that the distance from the earth to the sun is 1.5 times 10 to the power m and the statistics An urn contains 4 blue balls, 5 yellow balls and 7 red balls. if a single ball is selected, find the probability thet the ball is Red? Not blue? blue or yellow algebra The number of Hybrid vehicles sold weekly at a local car lot increased from 11 in 2006 to 19 in 2008. Predict the number of Hybrid vehicles sold weekly in 2011. My answer: rate = 19 - 11 2008 - 2006 rate = 8 2 rate = 4 then I subtracted 2011 from 2008 got 3 and multiplied that... chemistry Thanks for helping :) I understand that part, but I don't get in what direction each of the conditions listed above would the equilibrium shift to and how the colour would change. chemistry When varsol and iodine in potassium iodide aqueous solution is mixed, two phases form. What are the colours in each of the 2 phases when 2ml of I2/KI aqueous solution plus 2 ml of varsol are mixed in a test tube? What are the colours in each of the 2 phases when each of the ... algebra How do I find the slope of each of the three line segments 3,6,9 not on a straight line. then which two points is the slope the largest? algebra Find the slope of each of the three line segments. Between which two points is the slope the largest? 0 to 3 to 6 to 9 not a straight line. algebra on a graph starting at 0 and sloping up to 480 on total # of words typed and 16 time in mins. Hannahs typing ability Kerry can type the same # of words in half the time. a)what rate does Hannah type? b)what rate does Kerry type? c)How many words can Kerry type in 8 mins? math The the Hanson's have reduced the average number of hours they watch tv each day from 5.5 hrs. in march to 2.5 hrs. in june. Find the rate of change in average number of hrs. they watch tv each day. I think the answer is rate = 5.5 - 2.5/3 rate = 3/3 rate = 1 hr. is this ... geometry If the degree measures of the angles of a triangle are represented by x,y,x+y the triangle must be?? algebra y = -4x -2 find the y coordinates of the points (1),(-1),(-3). algebra y = -4x - 2 find the coordinates of the points (1),(-1),(-3). algebra (2/3)((7/8)-4x)-5/8=3/8 algebra Math Magicians charges$45 registration fee plus $30 per hour for tutoring. Math Master charges$25 registration fee plus #35 per hour tutoring fee. How many hours per tutoring would it take to make Math Magicians cheaper than Math Master?

physics multiple choice
Far from any gravity, an astronaut accidentally releases a metal wrench inside a spaceship that is traveling at a constant velocity of 250 km/s away from earth in outer space. What will be the subsequent behavior of that wrench as observed by the astronaut? A. It will fall to ...

physics multiple choice
A worker pushes horizontally on a 2000 N refrigerator on a kitchen floor with a force of 28.0 N. A. If the refrigerator moves forward, this person feels it pushing back with less than 28.0 N. B. The person always feels a 28.0 N push from the refrigerator. C. The person feels ...

physics
A. What is the mass of a book that weighs 3.20 N in the laboratory? B.In the same lab, what is the weight of a dog whose mass is 14.0 kg?

physics
A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman applies a horizontal force with magnitude 44.0 N to the box and produces an acceleration of magnitude 2.80 m/s^{2}, what is the mass of the box?

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