
physics help
Driving in your car with a constant speed of v= 22 m/s, you encounter a bump in the road that has a circular crosssection, as indicated in the figure. If the radius of curvature of the bump is 52 m, find the apparent weight of a 66kg person in your car
asked by anonymous on March 27, 2017 
math
Can someone give me the formula to work this out, I am not sure. Find the value of t for the difference between two means based on an assumption of normality and this information about two samples. (Use sample 1  sample 2. Give your answer correct to two
asked by tracy10 on June 23, 2013 
math
a large jar contains 500 identical marbles. Suppose you have an identical empty jar, a set of standard masses and balance scales. How would you find the mass of one marble without opening or breaking the jar? Explain Thanks for your help, this stumped me
asked by jillybean on April 8, 2009 
english
Hello, Where can I find more information about Aaron the moor in "Titus Andronicus" by Shakespeare? Prompt: As Tamara's star rises, so does Aaron's influences. How does he use it? What are his stated motives and confessed motives? Why can Aaron not act
asked by student on December 31, 2008 
Business mathematics
Jenny purchases a piano for rm 7000. She pays down payment of rm 2000 and agrees to pay the balance in 15 equal monthly payments, the first due in one month. If the dealer charges her 5% compounded monthly , find her monthly payment.
asked by Muhammad nur ikhwan on November 6, 2016 
algebra
The price of a sweater is $5 less than twice the price of a shirt. If four sweaters and three shirts cost $200, find the price of each skirt and each sweater. I have no idea how to set up these types of equations..... someone please help its due tomorrow
asked by M3L!55@ on May 29, 2008 
A Geometry ?
Given that two sides of a triangle are 20 and 66. Find the range of possible measures for the third side, s. a. 20
asked by Ali on June 18, 2006 
math
A piece of wooden rod 31 cm long is to be cut into three parts, two of which are to be of equal length. the length of each of the two equal part is 5 cm longer than third part. find their lengths. solution pls.
asked by Taeyeon on January 13, 2015 
Chemistry
find the ph of 0.100M NaC2H3O2 solution. do i just write an equation and solve for x NaC2H3O2 +H2O= Na2O + HC2H3O2 0.100 0 0 so x^2/0.100x =1.8 X10^5 x=1.3X10^3 then do ph=log(1.3X103) ph=2.9 is this right?
asked by L.Bianchessi on March 6, 2012 
math
Studies shown that gasoline use or compact cars sold in the U.S. is normally distributed, with a mean of 25.5 mpg and standard deviation of 4.5 mpg. Find the range of mileage for the middle 60% of compact cars.
asked by sarah on November 18, 2014 
Calculus
The cost (in dollars) of producing x units of a certain commodity is c(x)=5000+10x+0.05x^2 Find A=100 to x=105 so far i got yy/xx= C(105)C(100)/105105 i don't understand how it comes out to be 101.25/5 please help me
asked by THU on October 27, 2007 
intermediate algebra
Rowing. Abby rows 10km. upstream and 10km. back in a total time of three hours. The speed of the river is 5km./h. Find Abby's speed in still water.
asked by ROCKY on August 2, 2011 
Calculus
Two cars leave an intersection at the same time. Car X is travelling East at 50 km/hr and Car Y is travelling South at 60 km/hr. Find the rate at which the cars are separating after 30 minutes. I want its complete solution
asked by ChrismB on April 26, 2016 
Algebra 2
A bag contains 5 red, 9 white, and 10 blue marbles. Suppose you choose a marble from the bag and then choose another marble without replacing the first one. Find the probability of picking the same color both times.
asked by Katy on January 30, 2012 
Career guidance
I need some assist seriously I don't know which career or job is suitable for me I've been thinking about this matter I have, which job can I do or career can i do if I'm doing this subjects “history, geography, mathematics literacy, tourism... "? Please
asked by Sbongakonke on July 23, 2019 
Algebra
The hourly wages at a local business are between $8.60 and $14.80 depending upon the job. Write an absolute value inequality describing the possible hourly wages of the employees. Okay, so i already know that the inequality is like 8.60 is < or = to x is <
asked by Sabrina on February 2, 2010 
Pre calculus
A window is made up of a circle embedded in a rectangle so that the diameter of the circle is a side of the rectangle. Find the demensions that will admit the most light if the perimeter ofthe window is 44 meters.
asked by Haley on November 20, 2011 
Math
A box contains 4 red cubes, 3 blue cubes, 2 green cubes, and 1 yellow cube. You pick two cubes at random, replacing each after you pick. Find the probability of each compound event.
asked by Mary on May 2, 2012 
communication
I am doing a power point on red cross and the disaster responses they have this is one thing I would like to cover but can not find anything up to date can anyone help? What are new technology available to enhance disaster preparedness in the red cross
asked by april on November 21, 2008 
Math (Pre Calc)
If two forces of 5 lb. and 8 lb. are acting on the same point are equivalent to a single force of 10 lb., find the angle between the given forces, and the angle between the resultant and the larger force. I am not allowed to use law of cosines I must use
asked by Sarah on February 18, 2018 
Calc
You need 50 pounds of two commodities costing $1.25 and$1.60 per pound. a) Verify that the total cost is y=1.25x + 1.60(50  x), where x is the number of pounds of the less expensive commodity. b) Find the inverse function of the cost function.
asked by Erica on December 6, 2010 
math
The speed of a river current is 4 mph. IF a boat travels 20 miles downstream in the same time that it takes to travel 10 miles upstream, find the speed of the boat in still water.
asked by takeeyah on April 15, 2016 
Chemistry
find the ph of 0.100M NaC2H3O2 solution. do i just write an equation and solve for x NaC2H3O2 +H2O= Na2O + HC2H3O2 0.100 0 0 so x^2/0.100x =1.8 X10^5 x=1.3X10^3 then do ph=log(1.3X103) ph=2.9 is this right?
asked by L.Bianchessi on March 6, 2012 
Physics
A gardener waters a lawn. the hose ejects 5*10^4 m^3 of water per second. The area of the mouth of the hose is 5 cm^2. Find the backward force exerted on the gardener.[density of water=10^3kg/m^3]
asked by Alice on November 14, 2015 
Col. Algebra
I'm needing help with understanding /solving this problem. Can you please help? In triangle ABC, the angle C is six times as large as angle A. The measure of angle B is 20 degree greater that that of angle A. Find the measure of the angles.
asked by Kelli on April 10, 2017 
maths
A ball is dropped from a height of 1 metre. At every bounce it travels half of the height it travelled it with the previous flight. Find the total distance travelled when the ball comes to rest.
asked by anitha on December 27, 2012 
AP World History
There is a word that my worksheet is saying to define, the word is Chavin. I looked through my textbook, but I can't find the definition. What I am learning now is agricultural development and the earliest civilizations. Can you please give me a definition
asked by Diana on August 29, 2012 
College Algebra
A rancher wishes to enclose a rectangular partitioned corral with 1932 feet of fencing. What dimensions of the corral would enclose the largest possible area? Find the maxium area.
asked by Diane on October 4, 2013 
solid mensuration
Two perpendicular chords divide a circle with a radius of 13 cm into 4 parts. If the perpendicular distances of both chords are 5 cm each from the center of the circle, find the area of the smallest part. Please include solution. Thanks.
asked by Cathy on December 1, 2012 
physics
a wheel starts from rest and rotates with a constant angular acceleration and reaches an angular speed of 12 rad/sec in 3 sec. find the angle through which it rotates in this time.
asked by diann on May 3, 2011 
Math
The basketball team scored 38,48,42, and 38 points in four games. What was the average points scored 41 Find the median of the data set 59 64 42 51 55 55 The noon temperature for last four days were 62 58 70 and 66. What was the range and mean range is 12
asked by Jerald on April 2, 2013 
Chemistry
How do I find the answer to this?? Cu metal displaces Ag+(aq) from an aqueous solution. Which of the following is correct? Ag is easier to oxidize than Cu Ag is a better reducing agent than Cu Cu2+ is a better oxidizing agent than Ag+ Ag+ is easier to
asked by Clueless on January 18, 2018 
Math
A metal sheet made up the faces of a cube measured 12 cm x 12 cm x 12 cm. find the total area of metal sheet required A cube has six sides, each 12x12 cm^2 12X12X6=864cm
asked by Anonymous on February 10, 2007 
Physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 4.50 m/s, directed downward, and it hits the ground 2.04 s after it is released. Find the height of the balcony.
asked by Delilah on February 24, 2010 
physics
a high jumper approaches the takeoff point at a speed of 7.20 m/s. Assuming that only this speed determines the height to which he can rise, find the maximum height at which the jumper can clear the bar.
asked by Anonymous on October 9, 2014 
Math
Haden wants to cover a floor with square tiles the same size the floor measures 315 inches by 108 inches of she uses only whole tiles,find the greatest possible length of each tile;
asked by Crystal on November 13, 2018 
Physics
An object is placed at a distance of 50cm in front of a mirror of focal length 25cm. Find the image distance. If the object is 10cm high what will be the nature and size of the mirror?
asked by Charlesh on May 19, 2016 
probability
A bag contains 8 red, 12 white and 4 blue marbles. If 2 marbles are selected in succession (without replacement), find the probability as a common fraction in simplest form that first is red and second is blue
asked by james on August 17, 2014 
AED
I am trying to find sources with information about exemplary programs in my state (Kentucky). The exemplary programs can be state, school district, or community related that help meet the needs of atrisk students. Thank you.
asked by unknown on June 28, 2009 
Statistics
The lengths of pregnancies are normally distributed with a mean of 273 days and a standard deviation of 20 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 273 days and 275 days.
asked by Jane on February 10, 2013 
Physics
If a small planet were discovered whose orbital period was twice that of Earth, how many times farther from the Sun would this planet be? The answer for this one is 1.6 earth radii, but I can't seems to get solution to find the answer. I would appreciate
asked by john on May 12, 2015 
Algebra 2
Suppose the experimental probability is 1/3 that a carton of eggs contains at least one broken egg. Use the simulation of 20 trials to find the experimental probability that 3 cartons selected at random contain only unbroken eggs.
asked by bc on November 2, 2010 
math
the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^251x+18. b)x^3+13x^2+32x+20. c)x^25x/23/2. d)x^4+x^3x1 plz everyone help me out.till 2 o'clock...plz plz plz
asked by PLZ HELP ME NOW... on May 30, 2012 
English Language
I asked this question earlier. I need to write 2 letters of complaint about problems I face at school and problems I face as a student in general but I can't find any problems, could you help me list some problems? Its really really urgent.
asked by PLEASE HELP ME!!! on February 9, 2009 
Math again
The price of a lawn mower is x dollars. The store is having a 75% end of summer clearance sale. Which expression can be used to find the clearance price of the mower? A) .25x B) .75x C) x  .25(75) D) x + .25(75) How do I figure this out?
asked by Anonymous on February 16, 2018 
Stat
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of the success on a given trial N=9 X=0 p=0.30
asked by Bob on December 17, 2014 
math
Two squirrels are sitting on a rope as shown. The tension in segment BD is TBD = 6.3 lb at an angle of ϕ = 47 degrees. The tension in segment AB is TAB = 5.229 lb. Find the weight of the squirrel at B and the angle α.
asked by nick on December 6, 2013 
Algebra
The Jones family bought a new pet rabbit. They want to build an enclosure outside . They have 30ft of lumber. Find the length and width of the enclosure if the length is to be 4ft longer than twice the width.
asked by Phil on June 22, 2015 
physics
) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. What is the momentum, mv, of the electron in its orbit?
asked by Anonymous on April 22, 2014 
trig
Because of prevailing winds, a tree grew so that it was leaning 4 degrees from the vertical. At a point, 35 meters from the tree, the angle of elevation to the top of the tree is 23 degrees. Find the height h of the tree
asked by Keith on June 10, 2008 
chemistry
3. Find the empirical formula for a compound that consists of aluminum and chlorine in which the aluminum is 20.2 % by mass. 4. A sample contains 71.65% CL, 24.27% C nad 4.07% H. the molecular weight is known to be 98.96 g/mol. What are the empirical and
asked by jhong on March 11, 2012 
Science
A car is moving from rest .After 10 sec its wheel rotate 360 times in 1 minute. If the radius of the wheel is 50 cm, then find (1) angular acceleration and (2) angular velocity after 30 sec
asked by Pabitra on December 9, 2016 
Math
A photograph print measuring 24cm by 15 cm is enclosed in a frame. A uniform space of width x cm is left in between the edges of the photograph and the frame. If the area of the space is 270cm', find the value of x.
asked by Kd on April 27, 2019 
Math
Find the volume of a triangular prim with the following dimensions round to the nearest whole number. Triangle base: 5ft triangle height:3ft prism height: 7.5ft
asked by Anonymous Human on May 18, 2016 
Math
Find the volume of a triangular prim with the following dimensions round to the nearest whole number. Triangle base: 5ft triangle height:3ft prism height: 7.5ft
asked by Anonymous Human on May 18, 2016 
math
The function p(d)=1+d/33, gives the pressure, in atmospheres (atm), at a depth d in the sea? (d in in feet). Note that p(0)=1 atm, p(33)=2, and so on. Find the pressure at 40 feet (Type answer as a integer or a simplified fraction.)
asked by micheal on June 13, 2009 
Math
Professor's Salaries the average salary for a Queens College full professor is $85,900. If the average salaries are normally distributed with a standard deviation of $11,000, find these probabilities
asked by Natsu on November 29, 2018 
Chemistry
Helium was heated in a sealed container from 18°C to 36°C. The original pressure of helium was 0.84 atm. Find the new pressure assuming V and n remain the same. I put 0.84 over 18 and set it equal to x over 36. I got 1.7 atm but it says its wrong?
asked by Jocelyn on February 13, 2015 
Probability
The random variables X1,..,Xn are independent Poisson random variables with a common parameter Lambda . Find the maximum likelihood estimate of Lambda based on observed values x1,...,xn.
asked by qwerty on April 21, 2014 
trig
I have no idea how to solve this problem.
asked by Matt on June 10, 2009 
Mrs. SUe
Curiousity; Do you get paid for all for all of this hard work that you do??? BEcuase you are always on helping all students on a ton of subjects.. I really appreciate what you do and you deserve to get paid for all the students you are really helping,
asked by Sarah on May 28, 2009 
Algebra II
If the distance from the point (5,k) to the line 8x  15y + 8 + 0 is 20, find k. Recall that the formula to compute the distance between a point (x1,y1) and a line ax + by + c = 0 is d= abs(ax1+by1+c) [over or divided by] square root(a^2+b^2)
asked by Meg on September 12, 2010 
engineering mechanics
a pabble is dropped from the top of the building on a glass at the ground, the sound of splash is heard after 5 second. if the velocity of sound is 330 m/ sec. find the height of the top of the building
asked by virendra on April 1, 2017 
physical
Awheel increases its speed from 45 revolutions per minute to 90 revolutione per minute in 30 seconds.find angular acceralation of the wheel and number of revolution made by this wheel in this 30 seconds.
asked by Sostine on May 31, 2011 
algebra
A student opens a mathematics book to two facing pages. The product of the page number is 2352. Find the page numbers. The first page is__________ The secnd page is__________
asked by Mary on March 5, 2012 
statistics
A bag cntains 100 bolts nd 300 nuts 50% f each hv been rusted 1 item z chosen at random. Find da probability dat chosen item z rusted or a bolt.
asked by Anonymous on October 5, 2010 
Ms.Sue Please!! Math
There are 1,296 in.^2 in one square yard. Use a proportion to find out how many square yards of carpet it would take to cover the floor. I got 36 but I do not believe this is correct, for it is not a choice. Help, Im confused! The choices given are: 28 yd2
asked by Limmmy on November 17, 2012 
Physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.20 m/s, directed downward, and it hits the ground 2.10 s after it is released. Find the height of the balcony.
asked by Haze on January 31, 2012 
algebra
A and B are two points 150 km apart on a highway.two cars start from A and B at the same time if they move in the same direction they meet in 15 hours but if they move in the opposite direction they meet in 1 hour find their speeds
asked by karthik on August 2, 2014 
Math
16 dogs share a bowl of food. Each dog eats half a cup. Write & solve a division equation to find how much dog food was in bowl. Would this be c=16/2 c=8 (c=cups) Thanks for your help.
asked by Clark on November 16, 2014 
physics
A stone thrown vertically upwards from the top of a building takes 3s to reach its maximum height . Find 1. The velocity with which it is thrown 2.the maximum height it reaches above the builibg
asked by Anonymous on July 30, 2015 
physics
A ray of light passes from air into water. The incident angle is 30o. Find the index of refraction of water if the angle of refraction is 22o. Ans. 1.333
asked by Yesenia on November 16, 2010 
Physics
A child of mass m sits in a swing supported by two chains, each of length R. The tension in each chain at the lowest point is T. Find the force of the seat on the child at the lowest point
asked by Kari on October 12, 2011 
physics
a rubber ball is dropped from a height of 5m. After the 5th bounce, the ball only comes back up to 0.76m in height/ Find the percentage loss of kinetic energy for each individual bounce.
asked by Sam on March 12, 2009 
Derivative
Can you help me find the derivative of y= cos(x)/1+sin(x).. the / is a fraction bar. I have a hard time finding trig derivatives because I don't really know what the derivative of cos,sin ,or tan would be honestly.
asked by Angel on November 16, 2014 
statistic
The random variable x represents the number of boys in a family with three children. Assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x.
asked by Kim on August 20, 2013 
MATHS
A manufacturer offers a20% rebate on the marked price of a product. The retailer offers another 30%rebate on the reduced price. Find the single equivalent reduction of the two reductions. Please help!
asked by A GOODSTUDENT on August 25, 2016 
math probability
A box has ten dollars, one is five dollar and four of one dollars. If two bills are chosen at random without replacement, find probability of getting A) amount of valued fifteen dollars B) amount of twelven dollars... is it 4 from 1915 for A and 7 from
asked by sandy on November 14, 2014 
math 7th
cheryl,rita and four of their friends go to a movie and share equally a 48ounce bag of popcorn and three 48inch licorice laces. find the fraction of popcorn each gets and the fraction of licorice each gets.
asked by jgb on September 7, 2010 
ELA
Write 3 sentences with a preposition in each. 1.I waited outside for an hour for the concert to start. Outside is preposition? 2.He went down the elevator to go to the second floor. down is preposition? 3.We went inside each room to find the missing key.
asked by Jarrod on April 17, 2012 
physics
A train blows horn for 5seconds.Find the time for which a person standing at the platform hears the horn if speed of train is 20m/s and speed of sound is 340m/s.
asked by deepika on April 22, 2016 
algebra
A plane can fly a certain distance in 6 hours with the wind, but can return only threefourths the distance in the same time. If the speed of the plane in still air is 200 km per hour, find the velocity of the wind.
asked by Help, pls on April 2, 2015 
Calculus
An underwater viewing window is installed at an aquarium. The window is circular with radius 5 feet. The center of the window is 40 feet below the surface of the water. Find the hydrostatic force on the window.
asked by Lymara on February 27, 2018 
Calculus
Given that the series the summation from n=1 to infinity of [(1)^(n+1)/√n is convergent, find a value of n for which the nth partial sum is guaranteed to approximate the sum of the series to two decimal places. a) 39,999 b) 3,999 c) 399 d) 39
asked by Alice on May 13, 2019 
Geometry
The measure of an angle SUT is twice m
asked by Katie W on February 10, 2015 
physics
Two capacitors, C1 = 5 μF and C2 = 12 μF, are connected in parallel, and the resulting combination is connected to a 9 V battery. Find (a) the equivalent capacitance of the combination, (b) the potential difference across each capacitor, and (c) the
asked by maram on May 13, 2019 
College Algebra
The Jones family took a 24mile canoe ride down a river in two hours. After lunch the return trip back up the river took four hours. Find the rate of the canoe in still water.
asked by keonn'a on September 20, 2017 
Math
a page is to contain 30 square inches of print. the margins at the top and bottom are each 2 inches wide. the margin on each side are only 1 inch wide. find the dimensions of the page so that the least paper is used
asked by Afiq on October 15, 2015 
statistics
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of success in a given trial. n= 3 , x=1, p= 0.60
asked by angela on November 3, 2013 
Math riddle
nine odd numbers have a sum of 243.find the sum of the first and last numbers in a set of numbers. hint:if three numbers when added equals twelve then represent it by adding n+()n+1. no one cares...durrr....
asked by Yasmeen on February 27, 2007 
algebra
The hourly wages at a local business are between $8.60 and $14.80 depending upon the job. Write an absolute value inequality describing the possible hourly wages of the employees. Okay, so i already know that the inequality is like 8.60 is < or = to x is <
asked by Sabrina on February 2, 2010 
Physics
The 2nd harmonic of a string of length 60cm and linear mass density 1.7g/m has the same frequency as the 5th possible harmonic of a closed pipe of length 1.2m. Find the tension in the string.
asked by maryam on March 16, 2016 
physics
A body is in equilibrum when three forces act on it.Two of the forces are F1 of magnitude 8Newtons acting due east and F2 which is 5Newtons acting 060. find the magnitude and direction of the third force.
asked by joe on November 15, 2016 
engineering
Hello guys.I got a homework and seem like I am stocked. a)What type of experiments should be done to find the relationship between the strength of concrete and water/cement ratio. b)what will be the range of the water/cement ratio? It would be great if you
asked by Elena on May 4, 2014 
statistics
The life span of the battery pack is known to be Normally distributed with a mean of 250 hours and a standard deviation of 20 hours. How to find the percentage of the battery packs lasting more than 250 hrs.
asked by noe on May 6, 2012 
calculus
find the exact length of the curve y = ln(1x^2), 0
asked by Daniel on March 13, 2013 
Trigonometry
Hi, this question concerns a right angled triangle. If I know the hypotenuse of the triangle is 16cm and I know the adjacent side to an unknown angle is 14cm which trigonometric ratio would I need to find the unknown angle? Many thanks
asked by Sam on July 4, 2010 
physics
for a free throw in basketball,find an equation for the final angle to go into the hoop in terms of y and x to the hoop and the initial angle. I can't seem to get an equation with only those variables. I always get stuck with others like time and velocity.
asked by Mischa on February 3, 2008 
Chemistry
Find the final temperature, given that the initial temperature of a 40 g piece of Aluminum is 25 degrees Celsius and it is heated with 1800 J of heat. The specific heat capacity of Aluminum is 0.903
asked by Ashley on June 4, 2017 
Physics
Three charges q1= 2uc(0,0)cm q2=4uc(0,10)cm and q3=_3uc(15,0)cm acts on one another, find the magnitude of the total electric force and the angle that the total electric force makes with positive x_axis.
asked by Gboss on July 22, 2018
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