Questions Asked on
September 6, 2014

Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the
asked by John 
Math
A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a constant speed of 655 mi/h, how far is she from her starting
asked by Jason Q. 
English
My father was a hard working man but didn't earn much money. Is this sentence correctly punctuated?
asked by Laurie 
English 10
This poem describes a train as if it were a horse. Examine the imagery of the stanza in bold. What does it describe? A) The rumbling a train makes as it passes by B) The smell of train tracks after a train has gone C) The sound a train makes as it blows
asked by Pan 
prod and oper management
Hahn Manufacturing purchases a key component of one of its products from a local supplier. The current purchase price is $1,500 per unit. Efforts to standardize parts succeeded to the point that this same component can now be used in five different
asked by katy 
Chemistry
What is the volume of 1.25 lb of mercury? The density of mercury is 13.546g/mL.
asked by Hannah 
information technology
While doing online research you enter this keyword search with a truncation character: man* Which of the following would not be a possible response to your search? (Points : 1) Mansion Men Mantle Manny
asked by Rena 
chemistry
which of the following statements correctly describes energy levels? A. Electrons can never move to a higher or lower energy level. B. In its outermost energy level, oxygen has 4 valence electrons C. The Second energy level holds a maximum of eight
asked by Hideko 
physics
a fire hose hold near the ground shoots water at speed of 6.8 m/s at what angle(s) should the nozzle point in order that the water land 2 dm away why are there two diffent angles?
asked by kit flores 
math 1 question
Suppose you are building a brick border for a garden by stacking rows of bricks on top of each other. If the height of each brick is 2.5 inches and r represents the number of rows, which algebraic expression would represent the height of the brick wall?
asked by SkatingDJ 
precalculus
The equation of the line joining the complex numbers 5 + 4i and 7 + 2i can be expressed in the form az + b \overline{z} = 38 for some complex numbers a and b. Find the product ab. I can get the equation of the line by slope intercept but I don't know how
asked by Jamie 
Algebra
Bill can mow his mother's lawn in 45 minutes. His brother Jim can mow it in 75 minutes. How long will it take them to do it together? Can someone help with with the work? But also an explanation of how it works? I want to understand this so I don't miss it
asked by Eliza 
Computer Programming
Need Python pseudocode and program that asks the user to enter the number of packages purchased. The program should then display the amount of the discount (if any)and the total amount of the purchase after the discount. Software co. sells a pkg that
asked by Linda 
physical science
A simple lever is used to lift a heavy load. When a 60N force pushes one end of the lever down 1.2 m, the load rises 0.2 m. Show what the weight of the load is 360N.
asked by ann 
maths
Two tangents XY and XZ are drawn from a point X to a circle with center W.If the length of XZ is 156 and the length YZ is 120,find the radius of the circle.
asked by Nitumoni 
Math
Lindsey buy s a bag of each size of bouncy ball. She wants to put the same number of each size of bouncy ball into 5 partyfavor bags. How many of each size of bouncy ball which she put in a bag?
asked by Pietro 
Math
Write the opposite of 0 Celsius and 32f temperature as integer. Plz help
asked by Pam 
thcs do can
cuco3+feso4?
asked by dinh thu phuong 
Chemistry
Why are alum rystals not supposed to washed in pure water?
asked by Anoymous 
algebra
a car rental company has two rental rates. Rate 1 is $56 per day plus $.16 per mile. Rate 2 is $112 per day plus $.08 per mile. If you plan to rent for one week, how many miles would you need to drive to pay less by taking Rate 2?
asked by wanita 
Science
Why are aboriginal clan systems considered human social systems?
asked by Veronica 
chemistry
Write the anodic reaction for the electrolysis of concentrated zinc chloride solution. (a) Using plantium electrodes. (b) Using zinc electrodes
asked by Shane 
CHEM 1A
Can someone please help me..... I have limited reactant formula problem. I am completely lost. 2Ca(s) + O2(g) > 2CaO(s) Calculate the mass of Calcium Oxide that can be prepared from 6.87g of Ca and 4.58g of O2. I calculated 2Ca to .171mol and O2 to
asked by Chad 
Math
An all girl college began enrolling boys in 2005. By 2012 the ratio of boys to girls was 3 to 7. If there are 200 more girls than boys how many boys are there?
asked by Michelle 
physics
A bus accelerates at 1.4 m/s2 from rest for 14 s. It then travels at constant speed for 23 s, after which it slows to a stop with an acceleration of magnitude 1.3 m/s2.
asked by su_pona 
statistics
At a school consists of 62% undergraduate, 55% of the students are males, and 48% of the undergraduate students are male. a. Determine the probability that a randomly selected student is either male or an undergraduate b. Illustrate the probabilities using
asked by thankyou 
Physics
What is the connection between Weber’s Law, Fechner’s Law, and Steven’s Power Law
asked by Vanessa 
Physics
1.A bus travels 400 m between two stops. It starts from rest and accelerates at 1.50 m/s^2 until it reaches a velocity of 9.00 m/s. The bus continues at this velocity and then decelerates at 2 m/s^2 until it comes to a halt. Find the total time required
asked by Anonymous 
algebra
Help me Solve 1. (2p2 + 7p  39) ÷(2p7) 2 (n3 + 7n2 + 14n + 3) ÷ (n +2) 3. (p310p2 + 20p + 26) ÷ (p5) 4. (v3 2v2 14v  5) ÷ (v + 3) 5 ( x3  13x2 + 40x + 18) ÷ (x 7)
asked by bheng 
PreCal
There exist two complex numbers c, say c1 and c2, so that 2 + 2i, 5 + i, and c form the vertices of an equilateral triangle. Find the product c1 c2. I need help
asked by Aditya 
physics
Two objects with masses 2.0 and 3.0 kg move toward each other, both with speeds V0 = 5.0 m/s. They collide head on and stick together. (a) Calculate their final velocity. (b) Calculate the amount of kinetic energy lost during the process. (c) Suppose the
asked by Physics 
Physics
A wooden bridge crossing a canyon consists of a plank with length density λ = 2 kg/m suspended at h = 10.0 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as
asked by Giancarlo 
Chemistry
How many molecules of PbCl2 are produced when 5.00 g of Pb(NO3)2 reacts with HCl?
asked by Kee 
Physics II
What is the sign and magnitude of a point charge that produces a potential of 2.00 V at a distance of 3.00 mm?
asked by Anonymous 
Physics II
What is the sign and magnitude of a point charge that produces a potential of 2.00 V at a distance of 3.00 mm?
asked by Steve 
Chemistry
Find the pH of 1.0E8 M H2S04 (H2SO4 2H^+ + SO4^2) I have got answer to be 7.70, can you confirm the answer for me please? If it is not good, i'll be very grateful if you could leave some guides.
asked by Matt 
statistics
Define each of the following probability terms for the scenario of determining the probability that when a couple has 3 children, they will have exactly 2 boys. Assume that boys and girls are equally likely and that the gender of any child is not
asked by thankyou 
MATHEMATICS
3 friend's A,B,C went for weekend party to mc Donalad's restruant and there they measure their weights in some oder in 7 rounds. A,B,C,AB,BC,AC,ABC. Final round measure is 155 kg then find the average weight of all the 7 rounds.
asked by SUBRAT KUMAR SAMAL 
Stats
A sample of 400 items is taken from a population whose standard deviation is 10. The mean of the sample is 40. Test whether the sample has come from a population with mean 38. Also calculate 95% confidence interval for the population.
asked by Mritunjay 
chemistry
What is the approximate Cl–Ca–F bond angle in the following molecule?
asked by Chiongo 
Engineering
A box with an open top is to be made from a square piece of cardboard by cutting equal squares from the corners and turning up the sides. If the piece of cardboard measures 12 in on the side, find the size of the squares that must be cut out to yield the
asked by Trisha 
Math
In above triangular prism,ab=3cm,ac=4cm,bc=5cm and cd12 cm,show that triangle ABC is a rightangled triangle
asked by Paula 
physics
A flat circular plate of copper has a radius of 0.278 m and a mass of 42.6 kg. What is the thickness of the plate? answer in units of m
asked by Anonymous 
Calculus
Two points P and Q are connected by a straight road of length d. At time t = 0, a car starts driving from P to Q at a constant speed c. At t = 0, a bee starts flying from Q toward the car at a constant speed b > c, and takes a zigzagging path, reversing
asked by Robert 
Geometry
Find the indicated values. Please correct me if I'm wrong! 1. B is between A and C. AB=2x+1, BC=3x4, and AC=62. Find the value of 'x' and determine if B is a bisector. X=13 Is it a bisector? Yes 2. M is between L and N. LM=7x1, MN=2x+4, and LN=12. Find
asked by Anonymous 
statistics
Define the concept of independent events with regards to probability. Provide an example of an event that is independent and an event that is not independent
asked by thankyou 
Chemistry
A farmer supplies 1250.0 kg of a fertilizer that contains 10& nitrogen to his fields each year. Fifteen percent of the fertilizer washes into a river that runs through the farm. If the river flows at an average rate of 0.165 cubic feet per second, what is
asked by David Cardenas 
Physics
A ball is thrown vertically upward from the ground with a speed of 36.0 m/s.Suppose the acceleration of gravity were only 2.00 m/s^2 instead of 9.80 m/s^2 a)At what time does it have a velocity of 12.0 m/s upward? b)At what time does it have a velocity of
asked by Celine 
English
The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do.) please correct me if I'm wrong! 1. Sam
asked by Anonymous 
English
how do I start an Auto Biography? I mean what sentence should i start it with?
asked by AJ 
ANALYTICAL CHM
What are the possible sources of error in using a graduated pipet? in using a buret?
asked by jessy 
Geometry
W, R, and S are points on a number line, and W is the midpoint of point RS. For each pair of coordinates given, find the coordinate of the third point. Please correct me if I'm wrong! 1. R=4, S=6 Answer: W=1 2. W=4, S=2 Answer: R=10 *Could you please
asked by Anonymous 
ANALYTICAL CHM
Describe the correct technique for reading the meniscus of a solution in the buret.
asked by Josh 
chem help plz
While in Europe, if you drive 125km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 22.0mi/gal ? Assume that 1euro=1.26dollars.
asked by ityi 
Math
A tank is filling with water from a natural spring. Two days ago the water was 10 feet deep, and yesterday the water was 12 feet deep. Assume that the water depth continues to rise at this same rate after today
asked by Anna 
math
what is the reciprocal of 8??? i don't get how to do it.... can someone explain it???
asked by Eden S. 
math
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 16.200 ft. give the area A of the window in square feet when the width is 3.000 ft.
asked by luis 
MATH HEL PLZ!!!!
what is the reciprocal of 8??? i don't get how to do it.... can someone explain it???
asked by Eden S. 
college algebra
A large rectangular movie screen in an IMAX theater has an area of 7200 square feet. Find the dimensions of the screen if it is 10 feet longer than the width.
asked by jai 
science
What are macronutrients?
asked by karishma borah 
COORDINATE GEOMETRY
A RAY OF LIGHT ORIGINATES FROM A(1,2) AFTER REFLECTION ON XAXIS AT POINT A REFLECTED AT POINT Q(5,3). FIND COORDINATE OF A
asked by ASHMITA 
Teaching 4Grade Math
You play your Xbox 360 every day for a month. Each week you realize that every time you play, your battery lift goes down by 5% each week. Say you don’t play for two weeks, how much %___ are you saving a week by not playing.
asked by Dawn 
Algebra III
How do I determine the dimensions of the following matrix product? A 2x3 * B 3x5 ??
asked by Kylie 
geometry help needed.
I have a rectangle here with triangles inside. some triangles are blank others are shaded. The area of the rectangle ABCD is 40in^2. What is the area of the unshaded region?
asked by rami 
Algebra
Suppose that A = D + E and that D/A = 0.80. Solve for D/E. These are the steps I have taken, but I don't know how to proceed. 1. Divide A = D + E by A. 2. 1 = .80 + E/A 3. .20 = E/A 4. A/A = 1, D/A = .80, E/A = .20.
asked by Eliza 
science
How far does your automobile travel in meters during your reaction time if you are moving at 55 mi/h (25 m/s)?
asked by Nicole 
physics
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 54° above the horizontal. The end of the ramp is 1.4 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the
asked by Anonymous 
Chemistry
Give the number of significan figures and decimal places in each of the following: 1. 80750 X 10^2 2. 9.9000 X 10^8 3. 30.366 X 10^4 cm^3 4. 0.11692 X 10^5
asked by Anonymous 
Chemistry
determine the location of the non significant zeros by rewriting the number and placing a bar over the zeroes that are not significant. 1. 8040 2. 4.2 x 10^5 3. 4.70 x 10^6
asked by Anonymous 
(Please Help!) Analytic Geometry
Find the equation of the parabola with directrix x + 1 = 0 and y = 1, and the length of the latus rectum is 4. Sketch the graph.
asked by Jnr John 
chemistry
what topics are under periodic chemistry?
asked by Elikem 
maths
10th term of series 25+27+29........is
asked by sutej.ym 
geography
hello. I am a 7th grader and can you please help me in the topic realms of the earth?
asked by spandana 
visual arts
What are the 7 principles of design
asked by kamala 
chemistery
can you help me in elements and compounds?
asked by spandana 
Statistics
Event A occurs with probability 0.1 and event B with probability 0.5 A) What is the maximum probability that the intersection of A and B can have? B) What is the minimum probability that the intersection of A and B can have? C) If it is know that P(A
asked by Rebekah 
physiscs
if the largest mass that you could lift on earth is 150 Kg. What is the largest mass you could lift on the moon. My work 150kg/10NKg x/1.6Nkg on earth on the moon =24 kg on the moon
asked by mickalia 
Chemistry
A gold cube that measures 3.00 cm on each side is lowered into a volumetric cylinder that has an initial reading of 5.75 mL. What will be the new water level?
asked by Izzy 
Chemistry
A gold nugget that weighs 20.053 g on the balance is lowered into a graduated cylinder filled with ethanol. If the initial ethanol level was 10.10 mL, what will the final ethanol level be?
asked by Izzy 
Chemistry
A 14.0 kg sample of lead is measured out at 4 oC. Using the table on page 34, what is the specific gravity of lead?
asked by Izzy 
Physics Help!!!!
Describe what it means (describe the motion) if the acceleration vector has the same direction as the velocity vectors, and what it means if the acceleration vector has the opposite direction as the velocity vectors. Consider all four possibilities and
asked by Layla 
government
favorite theory of government? background information: how i would pursuade ppl those who have different opinion might say: i response i would say:
asked by reina 
Chemistry
A 14.0 kg sample of lead is measured out at 4 oC. what is the specific gravity of lead?
asked by Izzy 
Science of the Atmosphere
What is the temperature of air, given P= 90 kPA and the pressure is 1.0 kg(m^3)? Thanks!
asked by Rebekah 
English/Grammar help
The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do.) please correct me if I'm wrong! 5. He
asked by Anonymous 
Math
Use ,or = 8 _ 9 7 _ 8
asked by Fawn 
Amrican Constitutional Law
Police obtain a search warrant for Mary's house to search for cocaine. While executing the search warrant, the police look in a closet and find a sawedoff shotgun. The gun will be: A. admissible if it was immediately apparent as contraband. B. admissible
asked by Pat 
chemistry
In the electrolytic refining of copper, write equation for the reaction of the impure copper.
asked by Shane 
Math
When you calculate a mean, the sign of the quotient always depend on the sign of the dividend. Why?
asked by Fawn 
American Constitution Law
Please help with this Law question: If a criminal defendant goes to trial but the case ends with a hung jury, can the government retry the defendant on the same charges? Why or why not? A. No. The double jeopardy clause prohibits it. B. No. The double
asked by Pat 
Math
What would be the new ordered pairs of reflecting the points (1, 5), (2, 2), (3, 2), and (2, 5)?
asked by Anonymous 
Geometry
Points EC bisects points AD at C. For each of the following, find the value of 'x' and the measure of the indicated segment. Please correct me if I'm wrong! 1. AC= 3x+6 and CD=2x+14 x=_______ AC=______ Answer: x=8 AC= 30 2. AC= 5x8 and CD=163x x=______
asked by Anonymous 
english
2. In "The Censors," it is ironic that the Censorship Division doesn’t bother to check Juan’s __________ before hiring him. (1 point) mail references health pockets
asked by stacey 
math
A triangle having three equal sides is necessary and sufficient for a triangle having three equal angles
asked by Anonymous 
physics
In reaching her destination, a backpacker walks with an average velocity of 1.22 m/s, due west. This average velocity results, because she hikes for 5.61 km with an average velocity of 2.69 m/s due west, turns around, and hikes with an average velocity of
asked by Adel 
Physics for Technology
I have been out of school 27 years; no Algebra or Trigonometry training: only remedial math. This class is part of a Diploma program, no placement test required  I am out of my depth. I had a tutor for an hour last Tues., with another appt. this Tues.
asked by James 
math
Write an equation which models how old in years each of you will be when you are three times as old as the younger person use age 10 and 48?
asked by Pamela 
AP CAlc. AB
limit x>0 (3k+k(x^2) sin(1/x)), if k is a positive constant
asked by Lily 
english
it is a conversation between two friends about their journey to London. John asked Lee what he talked with the travel agent regarding their journey to London. Then, Lee told that the agent informed him that it takes some more time, at least one week. For
asked by Ramesh Reddy 
Math
The air temperature is 10 degree Celsius. With the wind blowing at a speed of 15 km/h, this temperate feels like 17 degrees Celsius. How many degrees does the temperature change because pf the wind chill?
asked by Anna 
statistics
A survey was conducted at a school to determine how many students use the outside recreational areas for studying versus recreational. Out of 43 students at the park 25 students were not studying. What is the probability that you would come across a
asked by thankyou 
statistics
Determine the probability that the single card drawn from a standard 52card deck is a four, a five, or a spade. Illustrate the probabilities using a Venn Diagram
asked by thankyou 
physics
A spacecraft of mass 3.5 x 102kg was moving at 1.5 x 102ms1 when its motor, operating at 8.4 x 102 kW fired for 5.0s Find the new velocity acquired by the spacecraft I don't know how to find the new velocity i found the work Power = w/t 840 x 5 = W 4200J
asked by john 
Algebra
What would be the new ordered pairs of reflecting the figure formed by (1, 5), (2, 2), (3, 2), and (2, 5)?
asked by Anonymous 
Law of Sines
In Triangle ABC, a=15cm, c=9cm, and angle C= 35 degrees. Find b and angle b. (Recall sin theta= sin (180 degreestheta). I'm not sure how to approach this.
asked by Richard