
Physics
A ball is thrown straight up from the ground with speed v_0. At the same instant, a second ball is dropped from rest from a height H, directly above the point where the first ball was thrown upward. There is no air resistance. Find the value of H in terms
asked by Anonymous on May 28, 2010 
math 100
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 70 people. (You may need to use the standard normal distribution table. Round your answers to the nearest
asked by ryan on November 9, 2018 
physics
On a banked race track, the smallest circular path on which cars can move has a radius of 101 m, while the largest has a radius of 163 m, as the drawing illustrates. The height of the outer wall is 19.0 m. Find (a) the smallest and (b) the largest speed at
asked by xavier on September 18, 2016 
Math
A colony of bacteria increases according to the law of unihabited growth. a) If the number of bacteria doubles in 5 hours, find the function that gives the number of cells in the culture. I have the answer to this one. It is N=No e ln2/5 (t) b) If there
asked by Hannah on November 20, 2010 
physics
A uniform 8 m 1500 kg beam is hinged to a wall and supported by a thin cable attached 2 m from the free end of the beam as shown in the figure. The beam is supported at an angle of 30 degrees above the horizontal. a) free diagram b) find the tension in the
asked by Anonymous on June 17, 2010 
physics
A sphere of mass M is supported by a string that passes over a pulley at the end of a horizontal rod of length L . The string makes an angle θ with the rod. The fundamental frequency of the standing waves in the portion of the string above the rod is f.
asked by Anonymous123 on March 17, 2018 
Math
In Saturday's 8 mile race Sarah's goal was to complete 1/2 of the run in 48 minutes. After that time had elapsed Sarah had run 2/3 of the total race. Which shoes how far ahead of Pace Sarah is? A.1/6 B.3/6 C.7/8 D.2/6 A? Before Chad shared his starburst
asked by Jerald on November 9, 2012 
math 115
1. sabrina has the following math quiz scores. 19, 24, 25, 17, 13, & 18. find her mean score, to the nearest tenth if necessary.= 13 is this correct? 2. eleven applications for a certain position had the following ages. 32, 33 ,25, 36, 48, 51, 28, 23, 54,
asked by Lea on September 6, 2009 
Calculus Help
Farmer Brown wants to fence in a rectangular plot in a large field, using a straight rock wall that is already there as the north boundary. The fencing for the east and west sides of the plot will cost $3 a yard, but she needs to use special fencing, which
asked by Chris on April 24, 2014 
Calculus
Find the minimum distance between the curves y=e^x and y=lnx. Hint: Use the fact that e^x and lnx are inverse relationships. I have no idea where to start. Thanks! calculus  Reiny, Monday, January 18, 2016 at 9:02pm to get you going: let P(a , e^a) and
asked by Samuel for Reiny on January 19, 2016 
Ap Chemistry
one problem the researchers faced was an uncertainty about whether the signals observed in certain mass spectrometry data were, in fact, due to lead isotopes. Explain why this was a problem. In other words, why wasn't information about the mass of the
asked by Otice on September 27, 2017 
Human Geography (Religion)
So I have to do a project on the Cultural Interaction in Religion. My religion is Sikhism. Here are the questions I'm supposed to answer in my presentation: How does the religion impact other aspects of culture? How does this religious faith influence the
asked by Maddie on January 20, 2009 
physics
For the next part, you will need to know that the position d of an object attached to a spring that oscillates with period T=1.0s is a sinusoidal function of time: d=kcos(2πt)d=kcos(2πt) for some constant k. Assume that the initial position of the object
asked by k on March 30, 2016 
physics
A binary star consists of two dense sphereaty masses of 10rest power 30 kg and 2 x 10rest power 30kg. Whose centres are 10rest power7km apart and which rotate togethe with angula velocity w about an axis which intersects a line joining their centres  show
asked by ugochukwu on March 10, 2016 
Physics
A 16 kg mass is attached to a cord that is wrapped around a wheel with a radius of 10.9cm. The acceleration of the mass down the frictionless incline is measured to be 1.4 m/s2.The angle of incline is 36 degrees. Assume the axle of the wheel to be
asked by Caryn on March 26, 2010 
Calc 2
Can you give me the step by step instructions on how to do this problem? I'm having difficulty understanding Riemann Sum. Let f(x) = 2/x a. Compute the Riemann sum for R4 using 4 subintervals and right endpoints for the function on the interval [1,5]. b.
asked by Bae on May 2, 2014 
physics
Would someone check my thinking please. A solid sphere (mass, r, and moment of inertia given) is rotating at a given angular speed. Friction is constantly applied at the 'equator' of the sphere, and brings it to rest in 3s. Find the force. I worked out the
asked by charlie on June 15, 2009 
Geometry
One can of pumpkin pie mix will make a pie of diameter 8 in. If two cans of pie mix are used to make a larger pie of the same thickness, find the diameter of that pie. Use sqrt 2 is equal to about 1.414
asked by Emily on March 8, 2008 
math
The speed of train A is 6 mph slower than the speed of train B. Train A travels 200 miles in the same time it takes train B to travel 230 miles. Find the speed of speed of each train.
asked by Zipporah on April 18, 2016 
math
The no of library books in a school increased by 20% after it bought new books in May , the number increased by another 20% after a book store donated 300 books in June  Find the no of books in library before it bought new books in May
asked by muhammad Saleem on January 7, 2017 
Math
Jane has three boxes she needs to ship. Box X weighs kg more than Box Y and Box Z weighs kg more than Box Y. She measured the total weight of all the boxes and it was found to be kg. Which equation can be used to find the weight, w of Box Y? A=3w15 1/4=55
asked by PLZ HALP on November 7, 2017 
MATH
Suppose an object moves along the xaxis so that its position at time $t$ is $x=t+\frac{t^3}{6}$. (a) Find the velocity, $v(t)=x(t)$, of the object. (b) What is $v(0)$? What does this say about the direction of motion of the object at time $t=0$? (c) When
asked by Sara on October 20, 2016 
math
The speed of train A is 6 mph slower than the speed of train B. Train A travels 200 miles in the same time it takes train B to travel 230 miles. Find the speed of speed of each train.
asked by Zipporah on April 18, 2016 
Physics
One closed pipe organ has a length of 2.5 m. The frequency of the note is 34.3 Hz. When a second pipe is played at the same time, a 1.7 Hz beat note is heard. By how much is the second pipe too long? Would you have to use the frequency of the second pipe
asked by Einstein on December 6, 2007 
math graphs
4. Which equation would you use to find out if the two lines in the graph are parallel? (1 point) LINE #1: point a: 1, 4 point b: 2, 1 LINE #2: point c: 3, 3 point d: 1, 1 a. 4  1/2  1 = 3  1/3  1 b. 4  1/2  1 = 3  (1)/3  (1) c. 4  1/1 
asked by Divergent Dauntless on May 5, 2014 
maths
Driving to work alone. It is reported that 77% of workers aged 16 and over drive to work alone. Choose 8 workers at random. Find the probability that a) All drive to work alone b) More than onehalf drive to work alone c) Exactly 3 drive to work alon
asked by saima on January 12, 2015 
calculus
I'm feeling pretty stupid right now because I can't remember how to do these. if f(x) = (2x5)/(x^24), write an equation of the tangent line to f at point x=0. *How do I find the slope of the tangent line? and how do you put x=ln4 into a y= equation? Take
asked by blondie07 on March 11, 2007 
algebra
A 20ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 4 ft longer than the height that reaches on the side of the bridge. Find the Horizontal and vertical
asked by sheba on July 26, 2011 
algebra
A 10ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 2 ft longer that the height that it reaches on the side of the bridge. Find the horizontal and
asked by carol on May 1, 2011 
math
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 35 said they drove alone. 35 rode in a carpool. 30 rode public transportation. 3 used both carpools
asked by Ms Jackie on December 5, 2012 
maths
An observer on top of a building 66 metres high,finds the angle of elevation to the top of a taller building to be 34 degrees.The angle of depression to the foot of the same building is 51 degrees.If the buildings are on the same ground level find the
asked by Shane on March 13, 2013 
Math
The cost of hiring a chainsaw is 10$ plus an amount that is proportional to the square of the number of hours for which the chainsaw is hired. If it costs $32.50 to hire the chainsaw for 3 hours, find to the nearest half hour, the length of time for which
asked by Aana on March 15, 2018 
Math
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 38 said they drove alone. 34 rode in a carpool. 33 rode public transportation. 9 used both carpools
asked by Reggie on December 11, 2012 
Calculus 2
A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for π. If you enter your answer in scientific notation, round the decimal value to two decimal places. Use equivalent rounding if you do not
asked by Liz on June 22, 2013 
Math: Please help
Find the values of the 30th and 90th percentiles of the data. 129, 113, 200, 100, 105, 132, 100, 176, 146, 152 answer: 30th percentile = 113 90th percentile = 200 thank you
asked by Cassie on March 20, 2014 
Statistics
A coffee company wants to make sure that there coffee is being served at the right temperature. If it is too hot, the customers could burn themselves. If it is too cold, the customers will be unsatisfied. The company has determined that they want the
asked by Rachel on March 15, 2012 
Physics
In air, the distance traveled by a sound wave is 140 meters during 400 vibrations. If the frequency of the tuning fork is 500 Hz, find the velocity of sound in air. Here's what I did: Wavelength= 140/400=0.35 So, velocity= 500*0.35= 175 m/s Am I right?
asked by Anonymous on October 1, 2015 
Math
A math teacher wrote x^2+bx+c=0 on the board and asked students to find the two real roots. Alice miscopied one of the coefficients and found that 1 and 4 were the roots. Andy miscopied a different coefficient and found that 2 and 3 were the roots.
asked by Devin on February 25, 2012 
physics pls help!
1.) water is flowing through a horizontal pipe of varying crosection, the diameter is 12.0 cm at a pressure of 8.0x10^4 Pa. at section 2, the pipe has a diameter of 6.0 cm and the pressure is 6.0x10^4 Pa. find the speed of water through section 1 and 2
asked by erjee on September 6, 2013 
physics help i still dont get it
A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the
asked by justin on October 22, 2012 
Math College 115
A hiker can walk 2 miles in 43 minutes. What is his average speed in miles per hour? Round your answer to two decimal places. The hiker's average speed is ___ miles per hour. What formula can be used to find the distance travel, d, in miles in t hours?
asked by Hneo on September 4, 2016 
math
At a local coffee shop, one customer purchased two muffins and three cups of coffee for $14.47. Another customer ordered 3 muffins and 5 cups of coffee for $23.30. Write and solve a system of equations to find the price of a single muffin and a single cup
asked by Riya on November 5, 2017 
Math/Physics
The potential at the surface of a sphere (radius R) is given by V_0 = k cos 3theta where k is constant. Find the potential inside and outside the sphere as well as the surface charge density (lower case sigma(theta)) on the sphere. (assume there is no
asked by Kim on October 30, 2014 
math
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 35 said they drove alone. 35 rode in a carpool. 30 rode public transportation. 3 used both carpools
asked by Mike on December 5, 2012 
Physics
1.A 24 kg crate initially at rest on a horizon floor requires a 75 N horizontal force to set it in motion, once the crate is in motion, a horizontal force 53 N keeps the crate moving with a constant velocity. Find the coefficient of kinetic friction,
asked by Bob on October 19, 2009 
physics need help bad
A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the
asked by justin on October 22, 2012 
College Chemistry
give the balanced equation for oxidation of iron(II)ion by permanganate and find how many millimoles of permanganate ion react with one millimole of ammonium iron(II) sulphate. I have the balanced equation: MnO4+8H+5Fe^(2+) > Mn+4H2O+5Fe^(3+) what would
asked by Anonymous on July 9, 2012 
Math
Find the values of the 30th and 90th percentiles of the data. 129, 113, 200, 100, 105, 132, 100, 176, 146, 152 answer: 30th percentile = 113 90th percentile = 200 thank you.
asked by Cassie on March 20, 2014 
need help
A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the
asked by justin on October 22, 2012 
Algebra 2345678!!
Solve the system of equations using the Addition method. 2a + 3b = 1 3a + 5b = 2 The addition method tells you to find common multiples of a coefficient, then add the equations together to eliminate a variable. If you multiply the first equation by 3 and
asked by Margie on October 14, 2006 
physics
Tom has a mass of 69.0 kg and Sally has a mass of 54.0 kg. Tom and Sally are standing 20.0 m apart on the dance floor. Sally looks up and sees Tom. She feels an attraction. If the attraction is gravitational, find its size. Assume that both Tom and Sally
asked by Danny on December 3, 2012 
accounting
Consider two bonds on the market: one zerocoupon bond, maturing in exactly 1 year from today and trading at 99% of its par value; another is a 2% coupon bond, maturing in exactly 2 years from today, trading at 101 of its par value. Coupons are being paid
asked by Anonymous on May 15, 2013 
Logarithms
What's the best way to find Angles using logarithms and viceversa. Ex: log cot 0.1690 and log sin (25degrees 22min) log sin (25+22/60) = log sin 22.3666666667 = sin 0.38053243281 = (0.41960832236) Is there a simpler way to do these? I get confused with
asked by John on September 17, 2013 
#6, week 15
what peninsula do the Wolverines go past to get to Green Bay? Thank you for using the Jiskha Homework Help Forum. The Wolverines are from Michigan and the Green Bay Packers from Wisconsin. Get a good map and look between Michigan and Wisconsin. A peninsula
asked by rob on December 12, 2006 
calculus 1chemistry
The relationship between the rate of a certain chemical reaction and temperature under certain circumstances is given byR(T)=0.1(−0.05T^3+4T^2+120)grams/sec, where Ris the rate of reaction and Tis the temperature (in °C). a)Find thetemperature T at
asked by john on December 21, 2017 
physics
1.) water is flowing through a horizontal pipe of varying crosection, the diameter is 12.0 cm at a pressure of 8.0x10^4 Pa. at section 2, the pipe has a diameter of 6.0 cm and the pressure is 6.0x10^4 Pa. find the speed of water through section 1 and 2
asked by erjee on September 5, 2013 
Chemistry
Hi, I am trying to figure out how to calculate the average temperature of 2 different chemical solutions based upon the temperatures I measured. The question states: Find the average Ti of HCl & NaOH solutions. The Ti of NaOH solution is: 20.87 C The Ti of
asked by Jules on March 12, 2012 
Physics
A satellite has a mass of 6146 kg and is in a circular orbit 4.57 × 105 m above the surface of a planet. The period of the orbit is 1.6 hours. The radius of the planet is 4.44 × 106 m. What would be the true weight of the satellite if it were at rest on
asked by Cat on January 23, 2013 
maths
from the top of a light house the angle of depression of a ship sailing towards it was found to be 30 degrees . after 10 seconds the angle of depresion changes to 60 degrees. assuming that the ship is sailing at uniform speed. find how much time it will
asked by pooja on November 8, 2011 
Vector Calculus
An airplane is traveling in the direction 20degrees west of north at 700 km/hr. Find the component form of velocity of the airplane assuming that the positive xaxis represents due east and the positive yaxis represents due north.
asked by Melissa on January 26, 2013 
Physics
I cannot find the answer anywhere on the reading or notes. Which of the following is a primary function of an adaptor that you plug into an ordinary electrical socket? It converts AC input to DC output. It converts AC input to AC output of a different
asked by Joe on March 15, 2018 
mth174
A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for π. If you enter your answer in scientific notation, round the decimal value to two decimal places. Use equivalent rounding if you do not
asked by Alex on February 7, 2012 
english
• Use at least five adverbs and five adjectives to write a 150 to 300word review of a movie, sporting event, musical performance, or television show. • Bold each adverb. • Underline each adjective. Here is what I wrote, but I am having trouble
asked by Havingtroublehere on February 27, 2011 
Math/Biz Math
I am so lost. Did I answer these problems right? Bud Ray is the owner of an automatic car wash located in a busy side of town. He currently has all the business he can handle and then some. His business has grown steadily over the years. His current car
asked by Jose on November 9, 2009 
English
Writeacher, I need you to check a paragraph I wrote some time ago. You revised just part of it. Thank you. 1)Speaker 4 has had lots of interviews lately. He was getting a bit blasé by the time he had my last interview. What he hadn't planned though was he
asked by Henry2 on February 26, 2012 
Algebra2
How do you get: Show that 0.00317 is a rational number by writing it as a quotient if integers. (the 317 has a line above it.) Please Help? Bob Pursley showed how to do that very question in an earlier post. Look back perhaps 234 days and you will find
asked by Jonathan on June 11, 2006 
civics
which would you most likely find a smaller a smaller amount of in a governments budget than in a personal household budget? a. the percent of total income that goes towards national defense and health care b. the percentage of people affected by the budget
asked by Nani on June 1, 2015 
Global History
I need answers for "GLOBAL HISTORY REGENTS REVIEW" packet. Associated names are Mr. Moeller and Mrs. Sita. I can't find answers anywhere. The packet can be found blank online here: johnbowne DOT
asked by Nick on May 4, 2014 
PHYSICS help!!!!!!
A commuter train travels between two downtown stations. Because the stations are only 1.36 km apart, the train never reaches its maximum possible cruising speed. During rush hour the engineer minimizes the travel time t between the two stations by
asked by neeba on September 14, 2012 
math
please check my answers A number cube with the numbers 1 through 6 is rolled. Find the given probability. 1. P(number < 2) (1 point) A. 1/6 *** B. 2/6 C. 4/6 D. 3/6 2. P(number ≥ 3) (1 point) A. 4/6 **** B. 1/6 C. 2/6 D. 5/6 3. P(complement of 4) (1
asked by please help ms.sue on April 22, 2014 
Physics
A racquet ball is struck in such a way that it leaves the racquet with a speed of 4.8 m/s in the horizontal direction. When the ball hits the court, it is a horizontal distance of 1.94 m from the racquet. Find the height of the racquet ball when it left
asked by Geoff on August 26, 2016 
Physics
A woman on a bridge 75.0m high sees a raft floating at a constant sped 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 7.00m more to travel before passing under the bridge. The stone
asked by Irish on January 18, 2012 
Calculus
If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, its height in feet after t seconds is given by f(t)=95t−16t^2 Find the average velocity for the time period beginning when t=1 and lasting (i) 0.5 seconds (ii) 0.1 seconds
asked by Abby on May 31, 2013 
statistics
on a typical summers day a boat company hires rowing boats at a rate of 9 per hour. a)find the probability of hiring out at least 6 boats in a randomly selected 30 minute period. b) the company has 8 boats to hire and decides to hire them out for 20 minute
asked by sohaila on September 29, 2014 
Physics
A weather vane initially at rest has a moment of inertiaof 0.100 kgm2about its axis of rotation. A 50.0 g pieceof clay is thrown at the vane and sticks to it at a point20.0 cm from the axis. The initial velocity of the clay is 15.0 m/s, directed
asked by Clinton on November 24, 2013 
chemistry
A 12.0g sample of carbohydrate contain 4.50g of carbon, 3.25g of oxygen, and some hydrogen. Determine the percent by mass of hydrogen in your product. Find the empirical formula for a compound that consists of aluminum and chlorine in which the aluminum is
asked by jhong on March 13, 2012 
physics
A car is speeding at 25 m/s in a school zone. A police car starts from rest just as the speeder passes and accelerates at a constant rate of 5 m/s2. How fast is the police car traveling when it is 25 m behind the speeding car? I honestly don't know where
asked by TiffTaff on January 25, 2015 
Physics  Projectile Motion
A ball rolls horizontally off the edge of a tabletop that is 1.60 m high. It strikes the floor at a point 1.58 m horizontally away from the table edge. (Neglect air resistance.) (a) How long was the ball in the air? ___ s (b) What was its speed at the
asked by TechnoBoi11 on February 1, 2007 
Physics
An alloy of mass 225g is heated to 550C. It is quickly placed in 450g of water at 12C. The water is contained in an aluminum calorimeter cup of mass 210g. The final temperature of mixture is 31.7C. Specific heat of aluminum is 0.215 cal/gC. Find the
asked by Tsunayoshi on February 3, 2014 
statistics
. For the table that follows, answer the following questions: x y 1 1 2 5 3 9 4  Would the correlation between x and y in the table above be positive or negative?  Find the missing value of y in the table. The missing value of y = How would the values
asked by mom on October 4, 2012 
Maths
These questions are about permutations and combination: Find the number of ways in which a class of 20 children can be divided into two groups of 6 and 14 if the class has a set of twins who are inseperable. (ans. is 21624) Four books are taken from a
asked by Claire on October 8, 2008 
statistics
Can someone guide me on how to solve this problem: A sample of 52 night students ages is obtained in order to estimate the mean age of night school students. sample mean = 25.9 years. the population variance is 23. Give a point estimate for the mean. Find
asked by concy on January 21, 2012 
Calc 1
A rectangular storage container with an open top is to have a volume of 10 m3. The length of the base is twice the width. Material for the base is thicker and costs $13 per square meter and the material for the sides costs $10 per square meter. Find the
asked by TayB on May 3, 2015 
stats.
In a transportation study of 20 large cities, it was found that the mean of the number of cars per person was 0.504. (Some of the people in the city are children.) The study also stated that the standard deviation s was 0.123. Find a 95 % confidence
asked by chris on April 4, 2013 
Algebra 1
A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = 49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball
asked by Sherry on March 7, 2013 
Physics
A hemispherical bowl of radius R is rotated about its axis of symmetry which is kept vertical. A small block is kept in the bowl at a position where the radius makes an angle Θ with the vertical. The block rotates with the bowl without any slipping. The
asked by Kewal on January 2, 2012 
Science ( physics )
A balloon is rising with a velocity of 4.9 m/sec releases an object from height of 96 m. a) How long after its release will the object reach the ground? b) what is the velocity of the object as it hits the ground? The object has in intial vertical
asked by Margie on August 1, 2006 
physics
As some molten metal splashes, one droplet flies off to the east with initial speed vi at angle θi above the horizontal, and another droplet flies off to the west with the same speed at the same angle above the horizontal, as inthe figure. In terms of vi
asked by Anonymous on February 18, 2011 
Math
I'm doing some word problems on finding the areas of rectangles, its just like all complicated. I don't understand how to do them. For example: A square field had 3 m added to its length and 2m added to its width. The area is 90 m2(squared). Find the
asked by Michelle on April 29, 2009 
Physics
An object of mass M = 884 g lies on a table. It is free to move along a horizontal, frictionless surface. This object is connected to a second object that hangs along the slide of the table by a massless string that runs over a pulley and connects both
asked by Nala on October 14, 2009 
algebra
An airplane encountered a head wind during a flight between Joppetown and Jawsburgh which took 5 hours and 30 minutes. The return flight took 5hours. If the distance from Joppetown to Jawsburgh is 1600 miles, find the airspeed of the plane (the
asked by Brandy on February 7, 2017 
Probability & Statistics
You want to rent an unfurnished onebedroom apartment in Boston next year. The mean monthly rent for a random sample of 14 apartments advertised in the local newspaper is $1200. Assume that the standard deviation is $230. Find a 95% confidence interval for
asked by James on July 9, 2012 
Calculus  Rates of Change
A water tank has a shape of an inverted cone with a base radius of 2m and a height of 4 m. If water is being pumped into the tank at a rate of 2m3/min, then find the rate at which the water level is rising when the water is 3m deep. Attempted solution: V=
asked by Melissa on March 7, 2016 
physics
As some molten metal splashes, one droplet flies off to the east with initial speed vi at angle θi above the horizontal, and another droplet flies off to the west with the same speed at the same angle above the horizontal, as inthe figure. In terms of vi
asked by natalie on October 15, 2010 
physics
Two crates are connected by a massless rope that passes over a pulley as shown in the figure below. If the crates have mass 32 kg and 80 kg, find their acceleration. If the system begins at rest, with the more massive crate a distance 11 m above the floor,
asked by kj on February 21, 2009 
physics 180A
A large spring is placed at the bottom of an elevator shaft to minimize the impact in case the elevator cable breaks. A loaded car has mass 480kg, and its maximum height above the spring is 11.8m. In order to minimize the shock, the maximum acceleration of
asked by Nabby on October 2, 2011 
Ashford
Often, after graduation, students report that they can barely remember some of the concepts they studied in school. This is particularly true if a difficult concept is introduced. As asymptotic notation is perhaps one of the most difficult concepts to
asked by Sarah on March 19, 2013 
science
find the gravitational force exerted by the sun on a 70 kg man located at the earth's equator a)at noon when the man is closest to the sun. b)at midnight when he is futherst from the sun. c)calculate the diferrence in gravitational acceleration due to the
asked by albert on January 21, 2016 
More Rational Exponents!
1. The optimal height h of the letters of a message printed on pavement is given by the formula . Here, h= (0.00252d^(9/4))/e d is the distance of the driver from the letters and e is the height of the driver’s eye above the pavement. All of the
asked by Brady on February 14, 2014 
physics
A 3.50 g bullet is fired horizontally at two blocks at rest on a frictionless table. The bullet passes through block 1 (mass 1.16 kg) and embeds itself in block 2 (mass 1.85 kg). The blocks end up with speeds v1 = 0.560 m/s and v2 = 1.36 m/s (Figure (2)).
asked by Kasie on May 9, 2012
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