
Physics
You have been asked to design a "ballistic spring system" to measure the speed of bullets. A bullet of mass m is fired into a block of mass M. The block, with the embedded bullet, then slides across a frictionless table and collides with a horizontal
asked by Marie on March 24, 2014 
math
a real motorcycle is 18 times as large as a model motorcycle that is 5 1/16 in. long so how long is the real motorcycle
asked by tweet on January 20, 2011 
Social Studies
How did the Ancient Puebloans adapt to their physical environment? A. They built networks of ditches to irrigate the desert. B. They cleared forests to make room for farmland. C.  They relied on fishing and hunting for food. D. They built mounds to
asked by KODA on October 10, 2018 
English
I'm including part of the poem for you to check. "No Nightingale did ever chaunt more welcome notes to weary bands Of travellers in some shady haunt, Among Arabian sands: a voice so thrilling ne'er was heard In springtime from the Cuckoobird ....." 1)
asked by Henry2 on November 7, 2011 
History
Please help! I'm trying to find some info. on Joseph Stalin, but what i've found doesn't seem to answer my questions. 2. What impact did the decisions and actions have on the leader responsible? Did their power increase or decrease as a result? Did they
asked by mstv on April 23, 2015 
physics
Two carts are in contact on a horizontal frictionless surface. Cart 'A' has a mass of 3 kg, and cart 'B' a mass of 2 kg. (a) Find the force F on 'A' needed to give the two carts an acceleration of 0.8 m/sec2 . What is then the force exerted on 'B' by 'A'?
asked by Anonymous on December 30, 2014 
math
A board is 84 cm long. How many meters long is this board?
asked by Grant on June 10, 2014 
physics
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at
asked by maria on November 21, 2011 
physics please helpp
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at
asked by maria on November 21, 2011 
physics
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at
asked by maria on November 21, 2011 
physics
The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The lefthand rod is brass and 1.21 m long; the righthand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at
asked by maria on November 21, 2011 
General Education
My question is " "What is the relationship between shortterm goals and longterm goals?" I think that for one to be able to achieve their longterm goals, they need to set shortterm goals and be able to meet them. But is there more to the relationship
asked by Mom of eight on January 9, 2010 
math
Kyle wants to form rectangles using straws.he has two straws of 6 inches long, two straws 4 inches long, and two straws 2 inches long.using four straws attached at the ends, how many different rectangles can Kyle form¿ what are the perimeters of the
asked by betsy on November 6, 2015 
Math
Perry's Publishing is relocating and 2 employees, Edna and Sam have created a "For sale" sign 4 feet long to place outside the current premises. They plant o attach the sign to a 9foot pole using a hook and a chain. They would like the top of the sign to
asked by M on April 30, 2015 
math
The Washington Monument is the tallest structure in Washington D.C. At the same time the monument casts a shadow that is about 500 feet long, a 40 foot flagpole nearby casts a shadow that is about 36 feet long. Make a sketch. Find the approximate height of
asked by Eleanna on February 21, 2012 
Physics
Two pendulums are set up side by side. One pendulum P, consists of a 0.240 kg mass that is suspended on a string that is 65.0 cm long. The other pendulum, Q, has a 0.360 kg mass that is suspended on a string that is 39.0 cm long. The two masses are pulled
asked by Steve on February 1, 2013 
Algebra
1. How long will it take for $900 to double if it is invested at 9% annual interest compounded 3 times a year? Enter in calculations or round to 3 decimal places. 1. It is take________ years to double. 2. How long will if the interest is compounded
asked by Keonn`a:please help. on November 24, 2017 
English
Hi, I have a english exam coming up on poetry and Hamlet... the first part is Part A ;Passage Analysis: Choose only three of the following passages from the play Hamlet to comment on. Each response should be concise and well written in full sentences...so
asked by Satrianna on January 16, 2013 
biology
A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotypes. She interbred this F1 generation (cross B) and counted the offspring, which consisted
asked by Anonymous on January 22, 2008 
biology, plz help!
A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotypes. She interbred this F1 generation (cross B) and counted the offspring, which consisted
asked by Anonymous on January 22, 2008 
Principle of Accounting
t is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year�s principle from the longterm liabilities. This entry reduces the longterm liabilities and increases the current liabilities. You are the bookkeeper for
asked by Tammy on March 29, 2010 
cci
It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year’s principle from the longterm liabilities. This entry reduces the longterm liabilities and increases the current liabilities. You are the bookkeeper for
asked by rafael on December 26, 2009 
Accounting
It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year’s principle from the longterm liabilities. This entry reduces the longterm liabilities and increases the current liabilities. You are the bookkeeper for
asked by Brian on September 20, 2010 
Accountant
It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year’s principle from the longterm liabilities. This entry reduces the longterm liabilities and increases the current liabilities. You are the bookkeeper for
asked by Timothy on January 1, 2010 
computer science
Here is a question which for some reason I feel very unsure with. Can you guys take a look and see if you agree or disagree with what I have? I personally think that the below situation is safe and secure: Your software company has produced the following
asked by who that on August 5, 2007 
Math
Ms. Henderson’s 5 art classes are turning in their final projects for the year. The table shows the numbers and type of project turned in during her first 4 classes. Part A Write the ratio of paintings to sculptures for each class in simplest terms.
asked by Anonymous on March 3, 2015 
Math
A sidewalk is 40 m long. each section of the sidewalk is 8 dm long. how many sections of sidewalk are there?
asked by David on February 25, 2016 
math
kevin drew a scale drawing of his living room,The actual room is 16 feet long.If the room is 12 inches long in the drawing,what is the scale of the drawing?
asked by bob on March 6, 2013 
12th grade
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble
asked by Helpplease on October 24, 2010 
Ap Chemistry
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble
asked by Helpplease on October 24, 2010 
math
A Ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the Ferris wheel be at the origin. The height h (in feet) of a Ferris wheel car located at the point (x, y) is given by h = 50 + y where y
asked by Rosalinda on January 31, 2012 
Mathtrig
A Ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the Ferris wheel be at the origin. The height h (in feet) of a Ferris wheel car located at the point (x, y) is given by h = 50 + y where y
asked by Anonymous on February 1, 2012 
algebra
A water faucet is located in one corner of Juan's garden. He wants a garden hose long enough to reach the farthest corner of the garden. The garden is rectangular with sides of 10 feet and 15 feet. How long should the garden hose be? Show your work
asked by Alexius on December 2, 2012 
algebra
Three pieces of wood are needed for project. They are to be cut from a 90cm long piece of wood. The longest piece is to be 3 times as long as the middle sized piece and the shortest piece is to be 10 cm shorter than the middle sized piece. Can this be done
asked by Kristi on May 9, 2010 
physics
A circle is cut out of a uniform piece of plywood. How does the rotational inertia measured around a point on its outer edge compare with the rotational inertia about its central axis? a. The two rotational inertias are the same. b. The rotational inertia
asked by ChrismB on May 15, 2016 
Math
To make green paint,Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What does this ratio mean? My Answer: It means comparing part to part (comparing how
asked by Matt on September 14, 2016 
English
Writeacher, I need your help to improve the questions below. I included part of the answers to make sense of the questions. Students should be able to develop their answers by writing tenline paragraphs. 1) Describe the details of Winston Smith's life as
asked by Henry2 on February 26, 2012 
math
Julia solved this problem. Peter had a strip of leather 58.8 cm long. He cut the strip of leather into 6 equallength pieces. How long was each piece of leather? Julia said the answer was 0.98 cm. Is Julia's answer reasonable?
asked by kill'nyola on November 21, 2013 
Science
Which of the following must be true of the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? A. Axons in muscle cells must both have structures that make in secrete the same molecules B. Axons in muscle cells
asked by Help pleasee on April 20, 2017 
English
Thank you for your last corrections! Can you check following sentences, too please? 1) The narrator may be internal to the story, that is a character in the story, either the protagonist or a witness. It (?) may also be a voice outside the story, who tells
asked by Franco on March 7, 2010 
Math : )
Lily receives 30 messages on her cell phone. Of those messages 1/5 are picture messages and 7/8 of the remainder are text messages. How many text messages does she receive?
asked by Karen D on November 15, 2016 
maths
A town planner is using a map of a town centre with a scale of 1: 1250 A path in the town is 8cm long on the map. How long is the path in the town? Give your answers in metres. how do i work this out?? set up the proportion: 1/1250 = 8/x x=1250*8 cm =
asked by k on May 9, 2007 
Algebra
How long will it take for $1,200 to double if it is invested at 12% annual interest compounded 6 times a year? Enter in exact calculations or round to 3 decimal places. It will take years to double. How long will it take if the interest is compounded
asked by Keonn'a Tarvin on November 28, 2017 
math
Jeff is replacing the tile on his floor. he pans to use square tiles that are 11 inches on a side. the floor is 8 feet long and 6 feet wide. cabinet in the middle of the floor that will not need tile. this space is 2 feet wide and 3 feet long. estimate how
asked by Marty on April 15, 2015 
english
can you proof read for me. In second part of the novel is more interesting from the first part. Alex was bored so Lao Xu told him the story about Zhou and Zhu GeLaing. It was very interesting story about Chinese history. Alex is very good to learn things
asked by anu on January 14, 2010 
AP Calc (Derivatives)
Suppose a coin is dropped from the top of the Empire State Building in New York, which is 1454 feet tall. The position function for freefalling objects is s(t) =−16t^2+v0t + s0. Question: At what time is the instantaneous velocity of the coin equal to
asked by Pax on January 21, 2015 
Language Arts
Part A In the Diary of Anne Frank, Act II, what is Anne's motivation for spending so much time with Peter?  She wants him to teach her how to dance  She wants to make Margot jealous  She wants to annoy Mrs. Van Daan  She feels Peter understands her**
asked by Jennie Brown on October 25, 2018 
math
City Cellular purchased $28,900 in cell phones on April 25. The terms of sale were 4/20, 3/30, n/60. Freight terms were F.O.B. destination. Returned goods amounted to $650. . If the manufacturer charges a 4 1/2 % late fee, how much would City Cellular owe
asked by Anonymous on March 16, 2014 
Excel
Say this is my cell: 2013 *aaron e. pacheco*9743 2nd Avenue*Boca 33431 *pacheco@fau.edu*9049 how would i use the text function to extract the first, middle, and last names from a list of cells like the one above with differing name lengths? and possibly
asked by Dom on July 10, 2013 
math
15. City Cellular purchased $28,900 in cell phones on April 25. The terms of sale were 4/20, 3/30, n/60. Freight terms were F.O.B. destination. Returned goods amounted to $650. What is the net amount due if City Cellular sends the manufacturer a partial
asked by Anonymous on August 20, 2013 
math
two phone companies offer discount rates to students. the first company wants $9.95 per month plus $.10 per minute for long distance calls. The second company wants $12.95 per month plus $.08 per minute for long distance calls. What is the equation?
asked by susie on September 21, 2014 
geometry!! urgent (math)
The lateral edges of a regular hexagonal pyramid are all 20 cm long, and the base edges are all 16 cm long. To the nearest cc, what is the volume of this pyramid? To the nearest square cm, what is the combined area of the base and six lateral faces?
asked by Noelle on September 5, 2008 
alg
solve equation g+4/g2=g5/g8 another qustion an elliptical track has a major axis that is 80 yrds long and minor axis 72 yards long find an equation for the track if its center (0,0) and the major axis is the x axis
asked by jerson on June 9, 2008 
MATHS
A pie is cut into two equal parts. The first part of the pie is shared between Abdul and Kate. Kate has 3 times as much as Abdul. The second part of the pie is shared between Sarah and Ron. Ron has 3/5 as much as Sarah. The mass of Sarah's share of the pie
asked by LARA on November 7, 2013 
Language Arts
Concrete Mixers by Patricia Hubbell The drivers are washing the concrete mixers; Like elephant tenders they hose them down. Tough grayskinned monsters standing ponderous, Elephantbellied and elephantnosed, 5 Standing in muck up to their wheelcaps, Like
asked by Pacman on April 1, 2016 
physics
A straight ladder is leaning against the wall of a house. The ladder has rails 4.80 m long, joined by rungs 5.100 m long. Its bottom end is on solid but sloping ground so that the top of the ladder is 3.100 m to the left of where it should be, and the
asked by kia on March 14, 2011 
Physics
A car skidded on a roadway that has a coefficient of friction with the road of 0.7. A police officer measured the skid marks and noted them to be 100 feet long. Two years later at trial, the lawyer for the driver argues that the officer did not measure the
asked by Hassan on April 29, 2015 
Cell biology
which of the following will inhibit the release of calcium by hormone bound to Gq coupled receptor? A. PLC inhibitor B. PKC inhibitor C. Cholera Toxin D. Phosphodiesterase E. none of the above I said B. Which is not a characteristic of cell signaling
asked by tracey on November 19, 2006 
Biology
MEIOSIS 1)name the process unique to meiosis that occurs during bivalent formation that may increase genetic diversity? 2)how are sister chromatic made and what is the structure that holds them together? 3)what do we call package of genetic information
asked by sk on February 22, 2016 
Physicsfriction problem
A 0.170 kg hockey puck is initially moving at 21.2 m/s [W] along the ice. The coefficient of kinetic friction for the puck and the ice is 0.005. (a) What is the speed of the puck after traveling 58.5 m? my solution: Fnet=Fk ma=μk.Fn ma=μk.mg
asked by LG on April 1, 2013 
Physics
On an openreel tape deck, the tape is being pulled past the playback head at a constant linear speed of 0.372 m/s. (a) If the radius of the film taken up so far (as shown in the upper part of the drawing) is 0.0576 m, find the angular speed of the takeup
asked by Jordan on October 25, 2010 
Physics
Given Vector A with magintude 9.17 feet and Vector B with magnitude of 10.58 feet, what is the resultant of the two vectors added together? Answer: I know it would depend on the direction of the vector. If in the same line we would add them or if opposite
asked by Nisar on August 30, 2005 
math
A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the ribbon? 1 2 3 4 Which number is equivalent to 0.45? 1/45 5/11 4/5 1/4 What is 3.56 x 10 *5 in standard notation? 356,000 3,560,000 0.00356 0.0000356 Ms. Johnson's class
asked by Lola on October 5, 2015 
physics
A model rocket is launched straight upward with an initial speed of 60.0 m/s. It accelerates with a constant upward acceleration of 2.00 m/s2 until its engines stop at an altitude of 130 m. (a) What is the maximum height reached by the rocket? Your
asked by jim on September 7, 2010 
Science!
Which of the following correctly identifies active transport? (1 point) Transport proteins move large molecules from areas of low concentration to areas of high concentration using cellular energy. Transport proteins move large molecules from areas of low
asked by Agala on January 10, 2017 
mathssurface area
there is a groove which is in a cylindrical form and is made in a cylindrical piece of wood of length 17.5cm. The groove is filled with graphite and the cylindrical graphite block is of same length as that of wooden piece. If the diameter of the graphite
asked by anoynomous on March 20, 2013 
physics
It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian
asked by tom on February 2, 2016 
science
The brightest galaxy in the Bootes cluster of galaxies is found to have a redshift of 0.13. (Assume the speed of light, c, is 3.0 × 10 8 m s−1.) (i) Assuming the Hubble constant, H0, is 70 km s−1 Mpc−1 to two significant figures, calculate the
asked by mj on August 22, 2011 
Math algebra
An experiment stain of bacteria is being used to treat an oil spill. A colony of 2^13 cells will be sufficient to ocean up the spill. If the colony is started with a single cell, and cells increase in number by splitting every 15 minutes, in how many hours
asked by Bill on June 5, 2015 
statistics
25% of the houses in a certain area have swimming pools. if 5 houses from this area are selected at random, what is the probability that no one has a swimming pool. 1.1 at least two have swimming pools. question2 an automatic boling machines fills cola
asked by mary on April 27, 2007 
disease/mitosis
What disease is caused when cells in body divide too rapidly by mitosis? It has been suggested that both certain types of cancer and Alzheimers have a relationship to mitotic disease. 1. Cancer 2. Elephantiosis (spelling?)The Elephant Man Is a good
asked by matthew on October 24, 2006 
math
The bottom of a ladder is on horizontal ground. The top of a ladder is leaning against a vertical wall. Diagram: right angle triangle labelled height is h metres, bottom of triangle is labelled d metres and in between the labelled h and d metres there is a
asked by supersupersuper on January 4, 2017 
algebra
A rare bacterial culture is being grown in a lab. As the days progress, the cells multiply and grow. After 1 day, there is only 1 cell. After 2 days, there are 9 cells. After 3 days, there are 20 cells. After 4 days, there are 34 cells. Which recursive
asked by Steve on August 25, 2017 
Stem Cell Research
Hi I need to find 4 articles about stem cell research. 2 need to be ones that just support it and 2 the just oppose it. Does anyone have any link of web sites where I can find this. It can't talk about both it has to oppose or support. Also a website would
asked by Rebekah on February 27, 2010 
math
Marianna's cell phone company charged her an upfront fee and a monthly fee. After three months of service, she had paid a total of $154.95. After a year of service, she had paid a total of $559.95.
asked by adadsda on March 23, 2016 
Chemistry
Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen
asked by John on April 22, 2015 
chemistry
A galvanic cell consists of a Mn/Mn^2+ electrode (E° = 1.18v) and a Fe/Fe^2+ electrode (E° = 0.44v). Calculate the ratio [Mn2+]/[Fe2+] if E_cell = .78v at 25°C. I know to use the nernst eq. E_cell = E°_cell  RT/nF * ln(Q) where Q is the ratio I'm
asked by ciaociao on December 2, 2012 
physics
According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy “Dizzy” Carlyle in a minor league game. The ball traveled 188 {\rm m} (618 {\rm ft}) before landing on the ground outside the ballpark part a Assuming
asked by Bob on June 14, 2013 
statistics
An experiment with results acquired showed that at the beginning the temperature was 20 degrees and the size of bacteria was 1 mm long. 12 hours later the temperature was 56 degrees and the size of the bacteria was 12 mm long. Create a graph showing the
asked by Anonymous on November 25, 2010 
Chemistry
The cell PtH2(1 bar)HCl(m)AgCl(s)Ag has an Stadard elctrode potential value of 0.2224V at 298K Using the Nernst equation, calculate a value for the EMF when the HCl concentration is 0.20M. I know what the Nernst equation is but I am unsure how to use
asked by Alice on January 14, 2009 
Algebra
Hello! Suppose that the price per unit in dollars of a cell phone production is modeled by p = $55 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that
asked by Brooke on October 12, 2018 
English
1. I have been late for school more than ten times when I was a middle school student. 2. I have not broken windows before. 3. I have never used a cell phone in class. 4. I have played ball in my classroom before. 5. I have ever played ball in my
asked by rfvv on October 20, 2010 
English
Sunlight hits the solar cells on the backpack. The solar cells change sunlight into electricity. The electricity is stored in the battery. A cell phone or an MP3 player can be plugged into it. (In this passage, what does 'it' refer to in the last
asked by rfvv on December 7, 2010 
science
how our body serum produce the anti bodies against the HIV virus, whenever HIV enter in to the body, it will degrades the receptors of the cell, so there is no chance of produce the antibodies, then how can we identify the antibodies in the sample by using
asked by omprakash on August 23, 2011 
Physiology
1. Atp synthase is an enzyme in the. D A. NUCLEUS B. CELL MEMBRANE C. MITOCHONDRIAL MEMBRANE D. MITOCHONDRIAL MATRIX 2. Each condon on a(n) ____ molecule encodes for ___ amino acids. A A. mRNA...one B. mRNA....three C. tRNA...three D. tRNA...one
asked by Hayley on January 21, 2018 
science
Tyler put a cube of blue closedcell foam in a syringe and clamped the end shut.When he pushed the plunger down the cube get smaller. What happened to the particles outside the cube? What happened to the particles inside the cube?
asked by callie on January 24, 2011 
Probability
We start with a collection of n (distinguishable) individuals whom we want to split into three possible teams: the blue team, the red team, and the white team. Each individual is randomly assigned to exactly one of the teams according to the following
asked by qwerty on March 7, 2014 
algebra
The force, F, needed to break a board in a martial arts class varies inversely with the length, L, of the board. If it takes 24 pounds of pressure to break a board 2.5 feet long, how many pounds of pressure would it take to break a board that is 18 inches
asked by Nate on February 5, 2018 
Math Help!
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the
asked by David on December 12, 2015 
Math
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the
asked by David D. on December 12, 2015 
math
Xavier's dining room table was unstable because one leg was shorter than the others. He placed a 7/8 inch thick piece of wood under the short leg, and it became even with the other legs, which are 18 3/4 inches long. How many inches long was the short leg
asked by drea on August 6, 2011 
Math Help Please
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the
asked by David on December 12, 2015 
Chemistry
Aluminum metal crystallizes in a face centered cubic lattice. If each Al atom has a radius of 1.43 A what is the density of aluminum metal? I'm not sure how to go about this. I know that eventually I will use V=l^3, but I'm not sure how to get there. I
asked by Gada on December 16, 2014 
To DAMON.. (RE: Phys question u solved yesterday)
YOU DID The tension in the string is the force exerted down by the falling disk and up by whatever is holding the disk. They are equal and opposite. If the disk is a yoyo, that force is exerted by your finger on the string to give the tension. Force up on
asked by Stacu on December 16, 2008 
Physics
Mars, on average, is 140 million miles from the Sun. 1 mi = 1609 m . Part #1: Express the distance between Mars and the Sun in meters using powers of 10. Express your answer using two significant figures. Answer: d =2.25×10^11 m Part #2: Express the
asked by Nicolle on September 5, 2016 
psy question
A group of researchers is investigating the effects of gingko biloba on memory. During the first part of the study the animals learn to run a maze while they are not receiving the supplement; in the second part of the study the animals learn to run a
asked by sool on December 20, 2007 
physics
A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and another mass is thrown straight up with a speed of 15 m/s. a) How far apart are the two masses after 0.5 s? b) Will the massses ever
asked by Sarah on August 31, 2006 
science
what difference would there be in the product cells at telophase II of the meiosis if there had been one crossing over at a position half way betwwen the huntington disease gene and the centromere from one pair of autosomes (chromosome 4)has a short arm
asked by angel on April 7, 2007 
geometry
A fire hydrant that is 1.5 feet high casts a shadow that is 2.5 feet long. At the same time of day, a lamppost casts a shadow 15 feet long. What is the height of the lamppost?
asked by jay on November 3, 2015 
math
At 3:00 PM a man 146 cm tall casts a shadow 136 cm long. At the same time, a tall building nearby casts a shadow 177 m long. How tall is the building?
asked by laurens on April 27, 2014