Questions Asked on
October 4, 2010

math
did you hear about..... p.188 PREALGEBRA WITH PIZZAZZ
asked by blargwork 
chemistry
Lithium metal dissolves in water to yield hydrogen gas and aqueous lithium hydroxide. What is the final concentration of hydroxide ions when 5.500 g of lithium metal is dropped into 750. mL of water?
asked by j 
Chemistry
What is the net ionic equation for the precipitation of nickel sulfide from aqueous solution.
asked by Anonymous 
physics
How long will it take an 850 kg car with 40 hp (horsepower) to reach the speed of 15 m/2, neglecting friction? 40 hp=29840 watts I know P=W/t but what is W?
asked by Anonymous 
physics
A shopper pushes a grocery cart 20m at constant speed on level ground against a 35N frictional force. He pushes in a direction 25 degrees below the horizontal. What is the work done on the cart by gravity? I know you can use W=Fdcos(theta) where
asked by Juliette 
chemistry
I have tried virtually everything, i can't fogure out this problem. I have 2K^+ + SO4^2 + Ca^2+ + 2I^ > CaSO4(s) + 2K^+ + 2I^. but it is incorrect and i dnt see how, can u help me? Write balanced complete ionic equation for K2SO4 (aq) + CaI2 (aq)CaSO4
asked by Amy 
College ChemistryPlease help me
I need to find the ionic equation of: 3Ba(OH)2(aq)+2H3PO4(aq)>Ba3(PO4)2+6H20(l) I'm totally lost on this question
asked by KELLY 
physics
true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal forces. The net force which
asked by molly 
chemistry
A 4.691 g sample of MgCl2 is dissolved in enough water to give 750. mL of solution. What is the magnesium ion concentration in this solution?
asked by nalleli 
math
Assume that the business makes a profit with probability 0.3 in the first year. For each year thereafter, the business makes a profit with probability 0.7 if it made a profit in the previous year, and with probability 0.2 if it did not make a profit in the
asked by Tiff 
Biology (multiple choice!)
In a symbiotic relationship between organisms of significantly different sizes, the larger organism is called the ___________, and the smaller organism is called the ___________________.
asked by Dawn 
chemistry
if heat was added at a constant rate to the solid subsance, why did the temperature remain at 16 degree C for approximately 6 minutes?
asked by amanda 
Math
A baseball is thrown up in the air from a height of 3 feet with an initial velocity of 23 feet per second. When does the baseball hit the ground?
asked by Chandler 
chemistry
when a student removed the crucible cover afer the first strong heating in creating magnesium oxide, some of the white was knocked from the cover to the floor and was lost. did this loss cause the calculated number of moles of oxygen in the compound to be
asked by shannon 
chem
Write a chemical equation for Sr(OH)_2(aq) showing how it is a base according to the Arrhenius definition. I came up with Sr(OH)_2 (aq)> Sr^+(aq) + OH ^ (aq). is this the final answer?
asked by moe 
PreCalculus
The side of a rhombus is 15 centimeters long, and the length of its longer diagonal is 24.6 centimeters. Find the area.
asked by Mindy 
geometry
If four angles of a convex pentagon measure 120°, 93°, 108°, and 101°.how would you find the measure of the fifth angle?
asked by daerius 
chemistry
HBr is a molecular substance that is a strong acid in water. Write an equation for its ionization in water. Use minimal integer numbers to balance the reaction. Include physical states in your answer, e.g., start with HBr(l).
asked by Andrew 
math
A ball is shot straight up into the air with initial velocity of 45 ft/sec. Assuming that the air resistance can be ignored, how high does it go?
asked by Rebecca 
chemistry
Would these be a redox reaction? CaO(s) + H2O(l) = Ca(OH)2(aq) 2FeSO4(aq) + 3H2O2(aq) = Fe2O3(s) + 3H2O(l) + 2SO42(aq)
asked by edgar 
Science
A spinning star begins to collapse under its own gravitational pull. Which one of the following occurs as the star becomes smaller? 1.Its angular velocity decreases. 2.Its angular momentum increases. 3.Its angular velocity remains constant. 4. Its angular
asked by Franco Krause 
Chemistry
I there, this is my lab worksheet, I am having trouble filling it out. Please help me with it. Expt #1 Molecular Weight of Unknown Acid Unknown Acid: #3 Mass of Unknown solid acid transferred:1.0g Volume of volumetric flask: 100.00 mL Concentration of
asked by Steve 
Chemistry
a piston performs work of 210. L atm on the surroundings, while the cylinder in which it is placed expands from 10. L to 25L. at the same time, 45J of heat is transferred from the surroundings to the system. Against what pressure was the piston working?
asked by Jim 
MATH SETS AND COUNTING
There are a total of 103 foreign language students in a high school where they offer only Spanish, French, and German. You are given the following details for this semester: 44 take Spanish. 44 take French. 42 take German. 7 take Spanish and French but not
asked by LEILA 
us history
why do you think jackson favored and benefited from the democratic expansion /that took place in the 1820's and 1830's
asked by mikki 
Physics
At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at rest, slides without friction, and descends through a vertical height of 2.28 m, what is her speed at the bottom of the slide?
asked by Kat 
Phisic mechanic
A trailer mechanic pushes a 2500 kg car, home to a speed v, performing a job during the 5000 J. In this process, the car moves 25 m. Neglecting friction between the car and roadway: (A) What is the final velocity v of the car? (B) What horizontal force
asked by cls 
Chemistry
NH4+ + OH NH3 + H2O What is the K for the reaction above in terms of Ka's, Kb's, Kw etc.?
asked by Tiffany 
woburn
We consider a man of mass m = 77 kg as shown in the figure below using crutches. The crutches each make an angle of è = 26 with the vertical. Half of the person's weight is supported by the crutches, the other half is supported by the normal forces acting
asked by shariva 
physics
A 100N child is in a swing that is attached to ropes 1.90 m long. Find the gravitational potential energy (b) when the ropes make a 35.0° angle with the vertical c) when the child is at the bottom of the circular arc
asked by Joe 
Music
How has Islam shaped conceptions of music for the peoples of the Middle East? I would rather a specific answer instead of saying using wikipedia. Thank you
asked by Jake 
investing
My son informed me that a comic book I purchased for 10 cents in 1948 is worth $55 today. What has been the average annual compound rate of return on that valuable asset?
asked by Robert 
statistics
Assume that each bag contains 6 balls. Bag a contains 3 red and 3 white, while bag b contains 2 red, 2 white, and 2 blue. You randomly select one ball from bag a, note the color, and place the ball in bag b. You then select a ball from bag b at random and
asked by Tiff 
physics
A ship leaves its home port expecting to travel to a port 500.0 km due south. Before it moves even 1 km, a servere storm blows it 100.0 km due east. Hom far is the ship from its destination? In what direction must it travel to reach its destination?
asked by Anonymous 
PreCalc
Which investment option will pay the most interest? A. 12.6% compounded annually B. 12.4% compounded semiannually C. 12.2% compounded quarterly D. 12.0% compounded continuously E. These investments all pay the same amount of interest.
asked by BJ 
Physics
An oldfashioned singleplay vinyl record rotates on a turntable at 40.0 rpm. What are (a) the angular velocity in rad/s and (b) the period of the motion?
asked by Nony 
physics
EXPLAIN A rubber ball (mass 0.30 kg) is dropped from a height of 1.2 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? so to find
asked by Frankie 
Physics
A small object of mass 3.00 g and charge 13 µC "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
asked by Nate 
TO: WHITNEY
I've removed your last post because it was rude and insulting. I've also banned you from posting here. Jiskha tutors cannot teach you math from the beginning. Since you have neither teacher nor textbook, I urge you to use sites like the following to learn
asked by Ms. Sue 
3rd grade
if you live 71 miles from a river does it make sense to say you live about 80 miles from the river
asked by carkos 
Physics
A car with mass of 1875kg is traveling along a country road when the driver sees a deer dart out onto the road. The driver slams on the brakes manages to stop before hitting the deer. The driver of a second car with 2135kg is driving too close and does not
asked by Shaila 
College Physics
A car starts from rest on a curve with a radius of 150 m and accelerates at 1.50 m/s^2. How many revolutions will the car have gone through when the magnitude of its total acceleration is 3.20 m/s^2 ?
asked by Dan 
college chemistry
A chemical engineer determines the mass percent of iron in an ore sample by converting the Fe to Fe^2+ in acid and then titrating the Fe^2+ with MnO4^. A 1.3510 g sample was dissolved in acid and then titrated with 39.32 mL of 0.03190 M of KMnO4. The
asked by KELLY 
physics another one
A laser emitting light of wavelength 580 nm is incident on a diffraction grating. What is the maximum number of lines per centimeter for which the m=5 principal maximum will be visible
asked by Alex 
Chemistry
If a student used 11.54mL of their NaOH solution to neutralize 10.00mL of a 0.445M KHP solution, then what is the concentration of the student's NaOH solution (in Molarity)?
asked by Ari 
O Chem
Why is an air trap necessary in fermentation?
asked by Staci 
Chemistry
H + C6H5CH2COOH = H2O + C6H5CH2COO What is the K for the reaction above in terms of Ka's, Kb's, Kw etc.?
asked by Megan 
chem
In the explosion of a hydrogenfilled balloon, 0.54 g of hydrogen reacted with 6.6 g of oxygen to form how many grams of water vapor?
asked by jeff 
MathEMATICS
high fountain of water is located at the center of a circular pool. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 15.0 m. Next, the student stands at the edge of the pool and uses a protractor to
asked by Chloe 
chemistry
what number of joules needed to turn 325g of water at 100 degree c to steam at 100 degree c
asked by alli 
Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
asked by Bala 
math
in square ABCD, the measure, in inches of AB is 3x+2 and BC is x+12. What is the number of inches in the length of DC ?
asked by Samantha 
Chemistry
Please help with this question, I have no clue how to go about it. 1.3188g of antacid is weighed and mixed with 75.00mL of excess 0.1746 M HCl. The excess acid required 27.20 mL of 0.09767 M NaOH for back titration. Calculate the neutralizing power of the
asked by Serenity 
math
Find the sales tax rate for each purchase. Purchase,$25.79;Tax,$1.29
asked by Ashley 
organic chemistry
The isolation process of aspirin was stopped after the filtration step with alumina and one week later the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110115 Celsius. explain why the
asked by Tammy 
chemistry
Oxalic acid (H2C2O4) can be used to remove rust according to the following balanced equation: Fe2O3 + 6H2C2O4 > 2Fe(C2O4)33 +3H2O + 6H+ Calculate the number of grams of rust that can be removed by 5.00 x 102 ml of a 0.122M solution of oxalic acid. I
asked by amber 
ps
A climber pulls herself 8 meters upwards with a force of 150 Newtons. If it takes her 16 seconds to cover the 8 meters, how much power is she using?
asked by Anonymous 
Chemistry
OH + C6H5CH2COOH H2O + C6H5CH2COO What is the K for the reaction above in terms of Ka's, Kb's, Kw etc.?
asked by Megan 
physics
Two rotating wheels have masses such that m2 = 5 m1, and radii such that R2 = 4 R1. If the angular accelerations of the wheels are equal, then what is the relationship between the two forces. F2 = 20 F1 F2 = 5 F1 F2 = 16 F1 None of the above What is the
asked by Anonymous 
chemistry
A sample of an ideal gas at 15.0 atm and 10.0 L is allowed to expand against a constant external pressure of 2.00 atm at a constant temperature. Calculate the work in units of kJ for the gas expansion. (Hint: Boyle's law applies) Please explain thoroughly!
asked by Jack 
statistics
suppose you believe that in general, graduates who have majored in your subject are offered higher salaries upon graduating than are graduates of other programs. describe a statistical experiment that could help test your belief. my problem with this
asked by lily 
Physics
A golf club contacts a golf ball for 0.15s at an angle to the horizontal and the ball strikes the ground a distance away. Initial speed is 25 m/s Angle of projection is 15 degrees Calculate time between ball leaving club and when it touches ground The
asked by Sherrie 
Chemistry
1) You are given solutions of HCl and NaOH and must determine their concentrations. You use 37.0mL of NaOH to titrate 100mL of HCl and 13.6 mL of NaOH to titrate 50.0mL of 0.0782 M H2SO4. Find the unknown concentrations. Molarity of NaOH and molarity of
asked by Ashley 
math
N and P are integers greater than 1 5N is the square of a number 75NP is the cube of a number the smallest value for N+P IS what? i cant figure it out, please help thank you so much
asked by AL 
college chemistry
At 625 K the value of Kc for the equilibrium represented by the balanced equation is 2.50 x 100. Calculate the value of Kp at the same temperature. Express answer in scientific notation. 2NH3(g) = N2(g)+3H2(g)
asked by sparkle 
physics
A book weighing 20 N is placed on a table. How much support force does a table exert on the book? Answer in units of N. What is the net force on the book in this case? Answer in units of N.
asked by Wendia 
algebra
a 17foot ladder leans against a wall. if the ladder is 8 feet from the base of the wall, how far is it from the bottom of the wall to the top of the ladder
asked by Anonymous 
Chemistry
A solution is prepared by adding 300 mL of 0.500 M NH3 and 100 mL of 0.500 M HCl. Assuming that the volumes are additive, what is the pH of the resulting mixture? Kb for ammonia is 1.8 x10 5
asked by Taylor 
Physics
A 4kg wooden block is placed on a wooden table, so the coeficent of friction would be 0.2. There is a string connected to both sides of the wooden block with a pulley system at the end of the table to go off and then each string has a different weight
asked by Taylor 
college chemistry
I need to find the ionic equation of: 3Ba(OH)2(aq)+2H3PO4(aq)>Ba3(PO4)2+6H20(l)
asked by KELLY 
algebra
a 28 ft rope is cut into 2 pieces. one is 3 feet longer than the other. how long are the pieces?
asked by mike 
physics
I tried doing this problem but couldn't get the right answer. I don't get how the answer is 2.19cm. Is the distance referring to the vertical or horizontal distance Four people, each with a mass of 73.5 kg, are in a car with a mass of 1190 kg. An
asked by flame 
physics
A person is standing 100 feet from a tall cliff. She throws a rock 80 feet per second at an angle of 45 degrees. Neglecting air resistance and assuming the person is 6 feet tall, does the rock strike the cliff? If so, how far up the cliff does it hit?
asked by john 
chemistry
a student takes 4.597g of hydrated barium chloride and heats it in a crucible. The anhydrous material weighed 3.919g. What is the complete formula for this hydrated salt?
asked by Anonymous 
ENVIRONMENTAL PROTECTION
Suppose we established a $10,000 fine for water pollution. Would some companies still find that polluting was economical? Under what conditions?
asked by Mi22 Gr33n 
chemistry
Calculate the heat that is either gainer or lost when 25.0 g of steam ( MW=18.02, cp: .0753, delta H fus 6.01 kj, delta H vap:40.67 kj, at 100C condenses to liquid water at 100 C.
asked by Sarah 
Biochemistry
How do you calculate the free energy change for the acetyl phospahate hydrolysis in a solution of 2 mM acetate, 2 mM phosphate and 3 nM acetyl phosphate. The standard state free energy of hydolysis of acetyl phosphate is /\G = 42.3 kJ/mol.
asked by nicki 
math
What is the answer to the puzzle time 1.5 that starts with did you hear about?
asked by Rebecca 
Physics
1. What is (a)the magnitude of the electrostatic force on a 10 microCoulomb charge located at the origin due to a 3 microCoulomb charge located at 1,2? (b) What is the force on the 3 microCoulomb charge? Write your answer in component notation.
asked by Heather 
physics
The drawing shows a 20.1kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, and , are applied to the crate, and it begins to move.The coefficient of kinetic friction between the crate and the
asked by Anonymous 
Finance
Crystal Lake, Inc., has a total debt ratio of 0.24. Its debtequity ratio is therefore times and its equity multiplier is times. How do you figure out the number you divide 0.24 by to get the DE ratio? I have a sample of this problem that just shows the
asked by Ken 
physics
If the torque required to loosen a nut on the wheel of a car has a magnitude of 40.1 N*m, what minimum force must be exerted by a mechanic at the end of a 38.2 cm wrench to loosen the nut?
asked by Aslin 
Astronomy
The hottest stars have surface temperatures of about 40,000 K. At what wavelength do they emit the most radiation? 7.2 x 10E6 cm 2.5 x 10E4 cm 4.0 x 10E2 cm 1.2 x 10E2 cm 1.4 x 10E6 cm
asked by Dre 
Chemistry
An antacid tablet weighing 1.462 grams was dissolbed in 25mL of 0.8M HCl and diluted with water. The excess HCl was titrated with 3.5 mL of 1.019M NaOH solution. 1. Calculate the number of millimoles added to the tablet 2. Calculate the number of
asked by Jennifer 
World History
Napoleon Bonaparte has been called the last of the enlightened despots. Discuss how his policies and practices resemble those of the enlightened monarchs of the old regime. In what important respects did they differ?
asked by Tee Smith 
4th grade
What is the complete subject and simple subject for the sentence " Valentine's Day has an interesting history."
asked by Bree 
College Physics
Margaret walks to the store using the following path: 0.420 miles west, 0.265 miles north, 0.300 miles east. What is her total displacement? That is, what is the length and direction of the vector that points from her house directly to the store?
asked by andrea 
Chem.
Suppose that 55 mL of 0.2 M LiOH and 55 mL of 0.3 M HNO2 are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.?
asked by Tiffany 
college trig
I need to find the domain of the following function: y=arcsin((x3)/(2x+1)) My math is a bit rusty after holidays...This is what I did: (I'll use for the sign of 'not equal') > 2x+10 2x1 x 1/2 But i'm not sure about the rest! What I though of doing was
asked by Jim 
4th grade english
complete and simple subjects for " Many stories about valentine's Day exist."
asked by Bree 
SETS AND COUNTING
In a survey of 289 college students, it is found that 65 like Brussels sprouts, 93 like broccoli, 55 like cauliflower, 28 like both Brussels sprouts and broccoli, 24 like both Brussels sprouts and cauliflower, 20 like both broccoli and cauliflower, and 13
asked by LEILA 
Physics
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an
asked by Bala 
Physics
A rock is tossed straight up with a velocity of 32.1 m/s. When it returns, it falls into a hole 20.1 m deep. What is the rock's velocity as it hits the bottom of the hole?
asked by Bala 
physics
A 120 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the floor is frictionless, and for the next 17 m the coefficient of friction is 0.34. What is the final speed of the crate?
asked by Kim 
physics
Two particles are in a uniform electric field whose value is +4000 N/C. The mass and charge of particle 1 are m1 = 1.0x105 kg and q1 = 15 µC, while the corresponding values for particle 2 are m2 = 3.0 x105 kg and q2 = +35.0 µC. Initially the particles
asked by Nate 
physics
Two people are pulling a boat through the water as in the figure below. Each exerts a force of 600 N directed at a è = 45.0° angle relative to the forward motion of the boat. If the boat moves with constant velocity, find the resistive force exerted by
asked by cameron 
Physics
A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
asked by Em 
college
1) You are given solutions of HCl and NaOH and must determine their concentrations. You use 37.0mL of NaOH to titrate 100mL of HCl and 13.6 mL of NaOH to titrate 50.0mL of 0.0782 M H2SO4. Find the unknown concentrations. Molarity of NaOH and molarity of
asked by Ashley 
physics
a supertanker with a mass of 5.0 x 10 to the 8th power kg accelerates from rest to a speed of 10 m/s in a time of 1000s. what is its average acceleration? how much force is required to accelerate the supertanker?
asked by kb 
chemistry
1. what gas law does the nitric oxide relate to and why? (**charles law, boyles law, combined gas or gaylusaacs law) 2. What gas law does nitrogen monoxide relate to? (**charles law, boyles law, combined gas or gaylusaacs law)
asked by navroz 
3rd grade
How would you use a number line to round 148 to the nearest ten?
asked by M'Kayla 
math
when 3 times a certain number is subtracted from 25,the difference is 28.what is the number?
asked by Carry 
physics
A tiger leaps horizontally from a 5.5 m high rock with a speed of 3.1 m/s. How far from the base of the rock will she land?
asked by c 
medical billing and coding
choose a product you bought within the last month from a clothing or shoe store, describe how the four factors contributed to the elasticity of the good, is the product elastic, unitary or inelastic, in a few sentences what effect does the current supply
asked by Laura 
English
What does it mean to be true American? Can someone suggest something because I need to write an essay.
asked by Mr.English 
Physics
1. What is (a)the magnitude of the electrostatic force on a 10 microCoulomb charge located at the origin due to a 3 microCoulomb charge located at 1,2? (b) What is the force on the 3 microCoulomb charge? Write your answer in component notation.
asked by Heather 
Physics
1) Suppose that you wish to fabricate a uniform wire out of 1.15 g of copper. Assume the wire has a resistance R = 0.600 , and all of the copper is used. (a) What will be the length of the wire? m? (b) What will be the diameter of the wire? µm? 2) A
asked by Tommy 
social studies
what are four stages of cultural development?
asked by regan 
College Chem
How many liters of carbon dioxide at 20 oC and 750 torr are produced when one gallon of toluene is burned? C7H8 + 9O2 ==> 7CO2 + 4H2O 1 gallon toluene = about 3,785 mL density = about 0.867 g/mL mass toluene = 3785 mL x 0.867 g/mL = 3282 grams. moles
asked by D 
geometry
The measures of all angles in a regular octagon are (4x + 12)°. how would you find the value of x?
asked by daerius 
math
Put in simplest form: 16x^7y^1210X^5y^8/2x^2y^9
asked by Jessica 
algebra
if 7 times a certain number is 7 times the number. what is the number?
asked by mike 
chemistry
You mix 50 mL of 0.1 M ammonium phosphate with 75 mL of 0.05 M calcium nitrate. How much of a precipitate forms from this reaction (in grams)?
asked by jazmin 
Phyiscs
A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
asked by Em 
Psychology
Hi SRJ Please can you review my essay, I would appreciate any critisms In 1935 Allport claimed that “the concept of attitude is probably the most distinctive and indispensable concept in contemporary American social psychology”. (Allport, 1935)
asked by Cathy 
FRENCH
Could you please let me know which sentence is better (more correct)? 1) C'est difficile à croire qu'il est déjà le mois d'octobre 2) .....que nous avons déjà le mois... 3) ..que nous écrivons déjà le mois... Merci beaucoup de votre aide.
asked by E.G. 
Math
Write an equation that shows 64 as a product of prime numbers
asked by Joe 
Physics
A 3.9 kg particle starts from rest and moves a distance of 2.4 m in 2.4 s under the action of a single, constant force. Find the magnitude of the force. Answer in units of N.
asked by Wendia 
Physics
An atwood machine consists of a massless string connecting two masses over a massless, frictionless pully. In this case, the masses are 1.70kg and 1.65kg. The system is released from rest with the 1.7kg mass 2.15m above the floor and the 1.65kg mass on the
asked by Larry 
english
am stuck with my homework. to do a sentence with nutrition in it and i cant think of one
asked by soph2 
Physics
1. What is (a)the magnitude of the electrostatic force on a 10 microCoulomb charge located at the origin due to a 3 microCoulomb charge located at 1,2? (b) What is the force on the 3 microCoulomb charge? Write your answer in component notation.
asked by Heather 
Chemistry
An ion can be removed from an aqueous solution by 1. formation of a precipitate. 2. the formation of a gas that escapes. 3. All of these 4. the formation of what is essentially a nonelectrolyte.
asked by John 
Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
asked by Bala 
Chemistry
A sulfurcontaining compound is decomposed and the products are collected over water according to this equation: SxOy > SO2(g) + O2(g) The mole fractions for the products are as follows: SO2 (.8) and O2 (.2) What is the empirical formula for the original
asked by Alyssa 
Biology (multiple choice!)
Which metabolic category best describes Bacteria that act as decomposers? A) Chemoautotrophy B) Chemoheterotrophy C) Photoautotrophy D) Photoheterotrophy E) All of these categories apply equally well to Bacterial decomposers.
asked by Sarah 
Chemistry
A sample of 9.4 grams of NaOH is dissolved into 693 mL of aqueous 0.250 M NaOH (assume no volume change). This solution is then poured into 2.37 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in the
asked by May 
math
list these from largest to smallest: 39.95, 4.00, 83.80, 20.18
asked by daysi 
Physics
A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
asked by Em 
geometry
if the measures of the trapezoid are 12cm, 5cm, 8cm, and 5 squareroot of 3. whats the area?
asked by quetee 
physics
A crate of mass 97 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.26. What is the smallest radius of curvature (in m) that the truck can take, if the speed with which it is going
asked by Becky 
chem  freezing point
When 18 g of ethylene glycol C2H6O2 is dissolved in 150 g of pure water, the freezing point of the solution is _____ C. (The freezing point depression constant for water is 186C kgmol.
asked by jerry 
Teacher AIDE
classroom management techniques
asked by carlo 
French (need a website link quick question)
I need a website link that will give me a practice test to Qu'estce qui and Qu'estce que. Where Qu'estce qui acts as a subject and Qu'estce que acts as an object. I also need a test on negative and affirmative commands. For example: Montrezmoila
asked by Rachel 
math
what is 115 times 39? (for math )
asked by sarah 
Riddle  Help!
Why did the Moore family name their son Lester? Thank you in advance.
asked by Anonymous 
college
Vocabulary analogies
asked by Alexis 
geo deductive reasoning
what is a bad example of deductive reasoning?
asked by Skylar 
us history
why do you think the election of 1824 helped lead to change in national politics?
asked by mikki 
Phisic mechanic
A car of 1,500 kg accelerates uniformly from rest to a speed of 10 m / s in 3 s. (A) Find the work done on the car during that interval. (B) Find the average power developed by the engine in those first 3 s. (C) Find the instantaneous power of the motor at
asked by cls 
Trigonometry
A space shuttle pilot flying over the suez canal finds that the angle of depression to one end of the canal is 38.25 degrees and the angle of depression to the other end is 52.75 degrees. If the canal is 100.6 miles long, find the altitude of the space
asked by TIA 
calculus 3
A ball is thrown northward into the air from the origin in three dimensional space ( the xy plane is the ground, the positive yaxis points north, positive xaxis is east and the positive z – axis is height above the ground ). The initial velocity of the
asked by cano 
8th grade math
What value will make the equation 6(x+5)=3(x14) true?
asked by evelyn 
chemistry
You need to prepare 500.00 mL of a 0.25 M solution of nitric acid . Concentrated nitric acid comes from the chemical copmanies as a 15.8 M liquid. How much (in mL) of this 15.8 M solution will you need to dilute to 500.00 mL to get the desired 0.25 M
asked by j 
English
Candy stripers are teenage volunteers at hospitals. (In this sentence, what is the meaning of 'stripers'? Does it mean people who are wearing striped clothes?)
asked by rfvv 
algebra
if 7 times a certain number is subtracted from 6, the result is 5 times the number. what is the number?
asked by mike 
Discrete math
Question: Use logical equivalnces to show that the propositions !p > (q>r) and q > (p v r) are logically equivalent. I AM SO DAMN CONFUSED! I tried to solve !p > (q > r) first and I only got to !p > (!q v r) I cant see any other rule that would apply
asked by rick 
statistics
A survey of 40 clothing stores reported these numbers of sales held during a random,ly selected year
asked by kim 
decision making
i have a case study in decision making the book name is making hard decisions with decisions tools can anyone help me solve the questions on the case study
asked by sereena 
music
...Not somebody just to get me through the night. (This is from a song. What is the meaniing of 'get me through the night'?)
asked by rfvv 
physics
Work Energy Lab a. What assumptions have been made in performing law of conversation of energy and analyzing the results? b. Which forces are directly responsible for generating ÄQ? c. How much work do these forces collectively (as opposed to
asked by mas 
Physics  Inelastic
Imagine that you have a very powerful water pistol. Describe in detail the experiment that you could perform, including the measurements that you would make, to determine the velocity of the water as it leaves the pistol.
asked by Shaila 
Math
1 divided by 7/2? I tried this on my calculator and got a demical, my teacher want's it in fraction form though.
asked by Dawn 
Physics
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an
asked by Bala 
spanish
"Margarita e Inés, ¿quién es____profesora de matemáticas?" "La señorita Hernández es nuestra profesora." a.su b.tu c.mi d.nuestro B?
asked by Lily 
geometry
In triangle ABC, CD is both the median and the altitude. If AB=5x+3, AC=2x+8, and BC=3x+5, what is the perimeter of triangle ABC?
asked by Anonymous 
EnglishComposition
Recently my class and I read a short story called "A l is Calm." It is basically about this girl named Katherine and her grandma who is suffering from the Alzheimer's disease. It starts out as this: Katherine's grandma has to be taken to the doctor because
asked by Sara 
4th grade english
What are the complete and simple subjects in the sentence " Mrs.Marcus told the class about Valentine's Day."
asked by Bree 
chemistry
suppose you have 58 g of pb? what number of moles of pb is present
asked by jarve 
Calculus
This is going to be pretty hard to show as text since it would be easier for me to post a picture of the question. The question has f(x) = x/4^2  (2x^3)/4^4 + (3x^5)/4^6 + ... . I am trying to find out the value of f(2). There is a hint to differentiate
asked by Douglas 
Physics
1) Suppose that you wish to fabricate a uniform wire out of 1.15 g of copper. Assume the wire has a resistance R = 0.600 , and all of the copper is used. (a) What will be the length of the wire? m? (b) What will be the diameter of the wire? µm? 2) A
asked by Max 
spanish
"¿____ nadas en el mar?" "Hace dos meses." a. Cuánto tiempo hace b. Cuánto tiempo hace que c. Hace un mes d. A qué hora B?
asked by Lily 
Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
asked by Bala 
Maths
is this correct... (3x^2+4x3)^2(3x^2x+2)^2 then is it this (9x^4+24x^32x^224x+9)(9x^46x^3+13x^24x+4) or this 9x^4+24x^32x^224x+99x^46x^3+13x^24x+4 should it have brakets or not that's my only problem thanks
asked by Kane 
math
Using the Octagonal formula how do you get the 6th octagonal number 96?
asked by Pamela 
maths
what is: A. 66,329 to the nearest 500 and to the nearest 1000? B. 211372 to the nearest 500?
asked by Anonymous 
spanish
home work check please d1. Eduardo es _____ Chile. A al; B en C a D de E del F all of the above b2. "Romeo and Juliet" es _____ Shakespeare. A al B de C en D a E del F all of the above. c3. Voy _____ los Estados Unidos. A de B en C al D del E dal F a e4.
asked by whitney 
math
How do i show work for this math question. A puppet requires 3/4 yard of material. How many puppets can be made from 9 yards of material?
asked by jack 
social studies
I have found out that India spent over 7 billion dollars on the common wealth games. My question is that did they beat China's record on the money? I am pretty sure India did but I am still asking to double check.
asked by Zoey 
Physics
A lamp (R = 151 ), an electric heater (R = 24 ), and a fan (R = 49 ) are connected in parallel across a 121 V line. What total current is supplied to the circuit? What is the voltage across the fan? What is the current in the lamp? What power is expended
asked by chuck 
Spanish
For the stemchanging verbs in the present tense I wouldn't have to do anything to those verbs in the preterite tense except changing the endings?
asked by Amy~ 
Mathsssssssssssss
triangle ABC A is (3,1) B is (5,3) C is (1,7) find the equations of: the median AM And the perpendicular bisector of BC
asked by john 
Spanish
would this be right: ir a tuvimos
asked by Amy~ 
6th grade
evaluate 2x+5y for the given number of x and y for x=4,y=3
asked by Anonymous 
Us History
what are the three clauses of the fourteenth amendment that articulate how people are to be treated by the united states government ?who shall be entitled to the various provisions ? i read something online but i don't understand anything
asked by Natalie 
business
•In a managers’ meeting, discuss the impact of the wellpublicized ethical lapses in recent years by several large companies.
asked by Sue 
Science  Physics  Optical Fibres
What problems are associated with optical fibres?
asked by Barbie 
math
you sellect four packages of modeling clay and a set of tools for a craft project.If there is a 6% sales tax,how much money will you need to buy these supplies? Clay:$2.79 each plus tax Tools:$1.79 plus tax
asked by Ashley 
Math
A company pays commissions of 6% on the first $500 in sales and 8%on sales over $500.What is the commission on an $800 sale?
asked by Ashley 
U.S. History
What role did religion play in prompting settlement to America, especially to New England?
asked by Yasmine 
calculus
Let f(x)=1x^3+2.5x+3. In this problem you will estimate f'(3) by computing the average rate of change of f(x)over a small interval. Round your answers to three decimal places. 1. First choose the interval of length .1 with 3 being the left endpoint of
asked by anonymous 
math
what is the relationship between sin of thata and cos of thata at every ten degrees?
asked by brooke 
College Chem
Recycling of PET soft drink bottles involves heating with methanol and an acid catalyst to liberate ethylene glycol and dimethylterphthalate (methyl ester of pthalic acid). These can then be used as monomers to make new PET products. Write an equation for
asked by D 
Statistics
Percentage of scores falling between a zscore of .54 and the mean. I can do the math, I just don't understand how to begin! Thank you.
asked by bee 
physics
A river flows due east at 1.91m/s.A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.3m/s due north relative to the water. A.What is the velocity of the boat relative to shore? How far downstream has
asked by dillon 
college
need help with writing assigment penn foster medcial coding and billing exam 028004
asked by martea' 
Physics help I am stuck
Monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 1.81 m away. If the firstorder maxima are separated by 1.40 m on the screen, what is the distance between the two secondorder maxima?
asked by Alex 
algebra
if 7 times a certain number is subtracted from 6, the result is five times the number, find the number.
asked by mike 
Phisic mechanic
An applied force varies with position according to eq. Fx = 3x3  5, where x is in m, and Fx in N. What is the work of this force on a body that moves from x to x = 4 m = 7 m?
asked by cls 
8th grade
I cant Figure this out... Find each Unit Rate: Four pounds of apples cost $1.96 and Sal washed 5 cars in 50 mins
asked by May 
3rd grade
how do you use thought in a sentence
asked by liana 
Math
The formula for the volume of a sphere is V=4 out of 3 pi r^3. How is this formula written if the radius,r,is a function of the volume,V?
asked by Sherri 
math
what does equivalent mean?
asked by Lisa 
geometry
suppose you copy a drawing of a polygon with the given size factor How will the sides lengths angle measures and perimeter of the image compare to those of the original? a)200% b)150% c)50% d)75%
asked by Marie 
Physics
Larry leaves home at 3:02 and runs at a constant speed to the lamppost. He reaches the lamppost at 3:18, immediately turns, and runs to the tree. Larry arrives at the tree at 3:26. What is Larry's average velocity during his trip from the lamppost to the
asked by Bala 
Physics
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an
asked by Bala 
English
1. She also takes the sick chilren outside in wheelchairs/ a wheelchair. 2. She took the patient in a wheelchair. 3. She took the sick person in wheerchairs. (Which expressio do I have to use? A singular form or a plular form:a wheelchair or wheelchairs?
asked by rfvv 
calculus
The slope of the tangent line to the parabola y=3x^2+6x+5 at the point (3,14)
asked by jim 
algebra word problem
the difference between 2 numbers is 24. find the numbers if their sum is 88
asked by brian 
business
i have a case study in decision making the book name is making hard decisions with decisions tools can anyone help me solve the questions on the case study
asked by sereena 
Chemistry
Suppose that you wanted to be sure that a metal ion, any metal ion, would dissolve in water. What salt of themetal ion compound would you choose? 1. the carbonate (CO2−3 ) salt of the metal ion 2. the hydroxide (OH−) salt of the metal ion 3. the
asked by May 
operating system
a. Alex gives the command vi letter. b. Jenny gives the command vi draft. c. Jenny changes the date in the opening of the letter to January 31, 2003, writes the file, and exits from vi. d. Alex changes the date to February 1, 2003, writes the file, and
asked by linux 
health
People who have trouble digesting milk should consider getting vitamin D and calcium from?
asked by ryan 
french
I don't understand this. Can anyone help me out? Thanks! Les pronoms employes avec les verbes de communication. Remplace le nom de la personne (ou le pronom) par le pronum correct. 1) Vous demandez a votre mere de vous attendre. Vous ______ demandez de
asked by Taylor 
chemistry
How many grams of KCl are required to make .75 L of 0.29 M solution? Round to one decimal place. i got .2907 is this correct im not sure about the decimal places thanks
asked by amber 
Biology
If oxygen is present, sugar molecules metabolize by going through: ? Please help
asked by Aliana 
math
explain how you could show five less than a number using an expression
asked by josh 
algebra
A vehicle uses 1 tablespoon if gasoline to drive 125 yards. How many miles can the vehicle travel per gallon?
asked by Kayla 
math
cassidy has a box with a length of 4ft an a width of 3ft. If the volume is 24 cubic ft,what is the height of the box?
asked by Kaylen234 
Algebra
Input X: 0,1,2,3,4,5,6 Input y: 80,72,64,56,48,44,40 Help! y=????
asked by Erin 
Physics
A bicycle wheel that initially spins at 3 revolutions per second is braked uniformly to a stop in 1 second. A spot is painted at the outer edge of the wheel. How many revolutions does the spot go during the time it takes the wheel to stop? The answer I got
asked by andrew 
science
what is the phsical layer of earth that is dividedunto tetonic plates is called the _____________
asked by rae 
Spanish
If "te (verb)" is in the present tense how would I change this to the preterite tense ? Would I leave it as " te (verb)" and only change the verb to a preterite would this be the same for "lo (verb)"?
asked by Amy~ 
science
a 1kilogram mass of water has a density of 1gram What is the density of a 10kilogram mass of water
asked by shaqana 
business writing
Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe
asked by Hyuna 
Chemistry
Help please am kind of confused on this problem, am mostly confused on what state the products will be. Find net ionic equation? 2Al(s)+ 3CuCl3(aq)> 2AlCl3(?)+ 2Cu(?)
asked by John 
Chemistry
A graduated cylinder massed at 34.56g and then 8.6 ml was added of an unkonwn liquid this brought the mass to 45.87g. What is the density? I'm not sure how to go about this. Is the 34.56g unneccessary information? Or, do you subtract 45.8734.56= 11.31
asked by David 
ap us Goverment
Why does Congress have the power to create bank,according to chief justice Marshall in McCullough V. Maryland ?
asked by Lakisha 
science
how are the biosphere and the cryosphere the same or similiar
asked by taylor 
physics
An object falling under the pull of gravity is acted upon by a frictional force of air resistance. The magnitude of this force is approximately proportional to the speed of the object, which can be written as f = bv. Assume that b = 10 kg/s and m = 56 kg.
asked by devonte 
chemistry
can someone please help me with this? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality
asked by Anonymous 
chemistry
can someone help me with this please? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality
asked by Anonymous 
Chemistry
Help please am kind of confused on this problem, am mostly confused on what state the products will be. Find net ionic equation? I BELIEVE ITS BALANCED NOW. 2Al(s)+ 2CuCl3(aq)> 2AlCl3(?)+ 2Cu(?)
asked by John 
Math
How can 26 be written as a sum so that one addend is a multiple of 10?
asked by A.T. 
7th grade
49 is 77% of what number?
asked by barb 
marketing
. In your own words describe at least three activities that represents each characteristic of a CRM plan; share of customer, lifetime value of a customer, customer equity or highvalue customers.
asked by kim 
math
list from smallest to largest: 79.34, 55.75, 165.15, 112.05
asked by daysi 
chemistry
how do you convert moles to moles per gram
asked by Anonymous 
MATH
nan brought an apple for snack time.she gave 3/4 of the apple to will and 1/6 of the apple to nora.how much of the apple did nan have left? A)1/24 B)0/1 C)11/12 D)1/12 I want to say it is d
asked by Anonymous 
eco
"What is meant by the term 'utility,' and how does it relate to purposeful behavior?"
asked by Anonymous 
PreCalc
log base 5 (75)
asked by aaaa 
Spelling
W m v c a e e q I need a word using q and some of these letters
asked by Curtis 
Microeconomics
I am stuck trying to illustrate poverty in an Edgeworth box. How do I begin thinking about this problem?
asked by Sabrina 
math
Place six coins on the table in the arrangement shown in the first row below... Start like this...head tales head tales head tales Your task is to produce the second arrangement shown by flipping coins according to thsi rule: you must flip two adjacent
asked by Katherine 
math
find the perimeter of this poloygon if one side is equivalent to (5+37)/6 and the perimeter is 30
asked by lamar jones 
chemistry
Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. independent of the chemical identity of the solute.
asked by jay 
Chemistry
A 1.994g sample of gypsum, a hydrated salt of calcium sulfate, CaSO_4_, is heated at a temperture greater than 170 degrees C in a crucible until a constant mass is reached. The mass of the anhydrous CaSO_4_ salt is 1.577g. What is the mass percent of
asked by Karen 
chemistry
The freezing point of a solution is A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. lower than the freezing point of
asked by ryan 
geometry
a rectangle has an area of 48 inches squared every dimention of the rectangle is multiplied by a scale factor and the new rectangle has an area of 12 inches squared what is the scale factor?
asked by tinch 
algebra
75ac+8a+2+3c+7d+a
asked by Steph 
reading
Aimed Captain Monitor Pretended Professional Familiar 1. If you've played a game many times it is a __familiar___ game to you. 2. If you acted as if you were a famous basketball played, you_pretended _. 3. If you took care of a playground, you were
asked by luz 
math
Using parentheses,how can you get 6+6/6*66=0? I need help!!!
asked by Tina 
math
Place six coins on the table in the arrangement shown in the first row below... Start like this...head tales head tales head tales Your task is to produce the second arrangement shown by flipping coins according to thsi rule: you must flip two adjacent
asked by Katherine 
science
what is the another name for vitamin c
asked by ahmed 
college
If you were stranded on a frictionless surface at rest, how would you escape?
asked by Jane D 
History
Was there any possibility that the British empire could have been repaired after the Intolerable acts?
asked by Damon 
English
Hello, just a quick homework question. How do you say: working for my sister's buisness  is it sister's with an apostrophe s or just s or apostrophe after s?
asked by Eloise 
calculus
Please tell whether im correct. decide whether function is autonomous ODE 1)dy/dx=(y1)/x, i think this is autonomous since it doesnt depend on x right? 2)dy/dx=yx, this is not since it depends on x
asked by flame 
English
Please help with my narrative essay, running sentence, incorrect sentence context etc.My teacher asked me to give my paper to native English speakers to correct more and my friends did not take my paper too seriously. Your help is appreciated! When I was
asked by Lindah 
english
How you do a 3rd gade spelling pyramid
asked by sara 
Math homework
Find the multipacative inverse of the number 18
asked by Dawn 
English
Need help with Analogies and suggest me other ways to write them please. Thank you for the help. 1)Smart people keep quiet about what they know, but stupid people advertise their ignorance.Changed into:Good drivers are hindered to show their driving
asked by Angelina 
us history
what was the basic view of Jackson toward the native Americans living in the southeastern united states in the early 1800's?
asked by mikki 
arithmetic
im trying to solve a riddle here it is.iam a four sided polygon.my two short sides are the same length and meet at the vertex.My two long sided are the same length and meet at the vertex.What am i?
asked by melina 
math
what is the dependent variable in math
asked by jo 
Statistics
13.19 (a) Generate a correlation matrix for your predictors. Round the results to three decimal places. (b) Based on the correlation matrix, is collinearity a problem? What rules of thumb (if any) are you using? Correlation Matrix F O E A F Floor 1.000
asked by Pat 
geometry
collinear points gk=45, hl=18, and gh=hi=i. find the length of each segment
asked by k 
US History
'Some Americans believe that government agencies should regulate the internet, setting guidelines for its contents and limiting access to databases containing personal information. Determine your opinion. List reasons why you support or oppose regulations
asked by mysterychicken 
chemistry
Suppose the concentration of sodium in Phoenix tap water is 70 ppm (mass based), then what is the concentration of sodium in milligrams per liter? The density of water is 1 g/mL. The answer units are mg/L.
asked by maricela 
operating system
Using the XP shell command line, how do I alter a specific environment variable without losing the original value. Please give example. Thanks
asked by Davin 
6th grade
use the distbutive property to rewrite the expression as a product. 6+18y+24
asked by Jacob 
Discrete Math
Determine How many integer solution there are to X1+X2+X3+x4=19 if A) 0 ¡Ü Xi for all 1 ¡Ü i ¡Ü 4 B) 0¡Ü Xi < 8 for all 1 ¡Ü i ¡Ü 4 C) 0¡ÜX1,¡Ü5,0¡ÜX2¡Ü6,3¡ÜX3¡Ü7,3¡ÜX4¡Ü8
asked by chad 
economics
Do you feel there are any imbalances to our wage structure in our economy?
asked by chris 
English
1. Cut long rice cake into 45 cm pieces. (How do you read '45 cm'?) 11. four to five centimeter 12. four and five centimeter 13 four or five centimeter 14 from four to five centimeter (Which one is right? Do we have to read 'centimeters'?)
asked by rfvv 
Math
Find the quotient Explain please!!!! 18 divided by 6
asked by Dawn 
Chemistry 20
If 40. kJ of energy are absorbed by 450 g of water at 16 oC, what is the final temperature of the water?
asked by Josh 
physics
8. Before you drop a ball held at a height of 5m with a weight of 20 N, what is its gravitational potential energy
asked by Amy 
Tax
When you are the boss of a company, does that mean you are selfemployed?
asked by Janice 
calculus
integration of4sin^2ydy
asked by Noushad 
Science
If a box car on a train measures 2 m wide, 15 m long, and 4 m high, what is its volume?
asked by Kammy L. 
math algerbra 1
3(4+4x)=12x+12
asked by erika 
maths
i have to do a survey regarding number of hours a child spends in watching t.v or playing and to find their mean mode median
asked by bhoomika 
Economics
How could some these up a couple of lines: these are legal issues of the EU, i just need to describe them a a couple of sentences: decisions, regulations and directives
asked by Brogan 
physics
A .15kg ball is dropped from a height of 14 m to the ground below, and hits the ground with a speed of 12 m/s. With what speed would the ball have hit the ground if there were no air resistance? How much work does the air resistance do on the ball?
asked by Jessica 
12th grade
if you remove 1000 cal from 1.5 grams of steam at 100 degress celsius, what would you have left?
asked by Billy Dean 
science
what is the kinetic energy in J? of a 150kg ball with a velocity of 30.0m/s
asked by damoncus 
celle energy
do anyone have an acrostic poem for cell energy
asked by sabrina 
Algabra
What is 2/5 of 6?
asked by Tanner 
probability
If you pick a number completely at random from the natural numbers between 1 and 42, find the probability that the number is a multiple of 3.
asked by Anonymous 
science
Select the form of leukemia that affects the bone marrow and develops gradually. A. Acute myelocytic leukemia C. Acute lymphocytic leukemia B. Chronic myelocytic leukemia D. Chronic lymphocytic leukemia
asked by muse 
Math
Let f and g be functions between A and B. Prove that f = g if and only if dom f = dom g and for every x in dom f, f(x) = g(x).
asked by noman 
2nd grade math
tell how 6+6 and 6+8 are related
asked by angela 
calculus
how do you solve Lim sqrt((x+1)/(4(x1)) xinfinity
asked by Kat 
Social studies
What river was explored by Spain
asked by Gibeth 
English
Posted by rfvv on Monday, October 4, 2010 at 2:24am. 1. Cut long rice cake into 45 cm pieces. (How do you read '45 cm'?) 11. four to five centimeter 12. four and five centimeter 13 four or five centimeter 14 from four to five centimeter (Which one is
asked by rfvv 
social studies
the opened exploration to Spain and France
asked by Gibeth 
social studies
What opened exploration to Spain and France
asked by Gibeth 
Algebra II
Can somebody explain to me on how I can do this problem? Find all real solutions to this equation. x^2+x+ radical x^2+x2=0.
asked by Mom of 8 
Chemisrty 1
If ou knew the density of an unknown metal, do you think you could accurately determine the identity of the metal based on that property?
asked by Mariah 
Physics
Larry leaves home at 3:02 and runs at a constant speed to the lamppost. He reaches the lamppost at 3:18, immediately turns, and runs to the tree. Larry arrives at the tree at 3:26. What is Larry's average velocity during his trip from the lamppost to the
asked by Bala 
math
how do you round 4.48 to the nearest half $
asked by shelly 
spanish
"Qué____Uds. hoy?" "Mi hermano y yo vamos a arreglar la casa porque pensamos tener una fiesta este fin de semana." a.hacemos b.haces c.hacen d.hacer C?
asked by Lily 
langauge arts
PASSAGE: How did one village bring disaster on itself? On a morning in early spring, 1873, the people of Oberfest left their houses and took refuge in the town hall. No one knows why precisely. A number of rumors had raced through the town during recent
asked by liz 
spanish
"Alberto prefiere sacudir los muebles." "Creo que no. Prefiere pasar la aspiradora." "Creo que Uds._____." a. tiene razón b. están de acuerdo c. no están de acuerdo d. no tiene razón C?
asked by Lily 
algebra
A retailer of DVD players knows that at a price of q dollars per player, he can sell (900 – 3q) players per month. Write a polynomial, in function notation, that represents the monthly income from the sale of DVD players.
asked by Anonymous 
College Physics
Which of the following statements is false? 1)The velocity of an object can change while maintaining a constant speed. 2)An object that maintains a constant speed must have zero acceleration. 3)An object that has a nonzero acceleration must have a
asked by Bryce 
algebra
z equals 100 what is z/10?
asked by Gram 
English ..
How long have animals been used for fables ? 50 years ? 4 centuries ? Millenia ?
asked by Chloe 
math
my question is how do i find the prime factorization for this number 24 thank you for your help
asked by ST 
accounting
i am trying to understand porter's fiveforces, can anyone help me?
asked by tilda 
English
Thank you very much for your last corrections. Can you check these sentences for me, please? 1)The Romantics reacted against the faith in reason which characterized the previous age.They claimed the superiority of feelings over reason. 2) They showed an
asked by Franco 
English
I forgot to include the following statements. I reall hope you can check them, too. Thank you! 6) Great emphasis was laid on the individual, who was seen in his solitary state. They exalted the outcast, the rebel. 7) This attitude led on the one hand to
asked by Franco 
physics
Which bug experienced the greatest accelera tion? 1. Their acceleration is same. 2. Unable to determine. 3. the VW 4. the insect
asked by Wendia 
SCIENCE
HELP ME!! EVERYONE IS MAD AT ME BCUZ THEY THINK I AM YELLING AT THEM BUT REALLY MY COMPUTER WILL ONLY DO BIG LETTERS! IF THERE IS A SOLUTION TO THIS PLEASE HELP ME. THIS IS NOT A JOKE.
asked by SAMMI 
Austin Community College
Name three portable devices that can be used for removing data from a computer and taking the data out of a building.
asked by John 
college physics
Which of the following statements about special relativity is false? a).The proper length of an object is always larger than the length of the object in a frame where it is moving. b).The proper length of an object depends on the relative speed between the
asked by Lexi 
Psychology 240
Jim has used heroin for the past 5 years. One day, Jim and Jack both use large quantities of heroin. Although both used the same amount of drugs, Jack dies from an overdose. How does drug tolerance and conditioning factor into this outcome? Explain the
asked by Anonymous 
algebra
a 23 foot cable is cut into two pieces, one three times as long as the other. how long are the pieces?
asked by mike 
English
Can you please check if the following sentences are possible? Thank you. 1)Imagine you are a participant in (?) in the Ten Tors Challenge. Describe your clothes. Start your paragraph with: "I'm wearing.." 2) What clothes do you like wearing? What clothes
asked by Franco 
Math
What is the mean of these numbers? 1,4,5,10
asked by Dawn 
chemistry
Equations for iodometric titration of carbon monoxide
asked by Ele 
math
the all city band is made up of students from three schools. Bayside, Lincoln,and Hendricks. 20 students are in the all city band. 5 students come from Bayside. Lincoln ha sone more student in the band than Hendricks. How many students in the all city band
asked by Anonymous 
chemistry
what is the kinetic energy of a goose with a mass of 17.9 Ibs. and is flying 11.9 m/hr.?
asked by Anonymous 
world history
What distinguished the first centuries od Islamic history from the early history of Christianity and Buddhism? What simialrities and differences characterized their religious outlooks?
asked by kelsey 
Math
Express the quantified statement in an equivalent way. Some students are bored. Would it be Not all students are bored?
asked by Pamela 
Com/155
Review pp. 517–520. Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. What is the most effective way to determine
asked by "Angie 
earth
A helicopter is ascending vertically with a speed of 4.00 m/s. At a height of 185 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?
asked by katie 
math
how to arrange these numbers from least to greatest 2, 2 1/4 ,2.3 ,222% ,2 1/9
asked by mita 
algebra
what is a formula???? i don't know what it is!!!!!! :[ help there's a quiz tomorrow..........
asked by Anonymous 
math
marie used based ten block to model 328.she used 3 hundreds 2tens and 8 ones. what are the two other ways she could show 328 with base ten blocks
asked by jalee 
chemistry
HOW DO I FIGURE CONVERSIONS. I HAVE 100GRAMS OF A METAL AND 18% OF THAT IS NICKEL. HOW MANY GRAMS OF NICKEL DO I HAVE?
asked by SOL 
6th grade
find the perimeter of this poylgon if one side is equivalent to (5+37)/6 your perimeter is 30
asked by lamar jones 
Physics
An arrow is shot a 30.0° above the horizontal. Its velocity is 49 m/s and it hits the target. a. What is the maximum height the arrow will attain? b. The target is at the height from which the arrow was shot. How far away is it?
asked by John 
reading
Aimed Captain Monitor Pretended Professional Familiar 1. If you've played a game many times it is a ________________ game to you. 2. If you acted as if you were a famous basketball played, you______________. 3. If you took care of a playground, you
asked by luz 
Algebra II
(3 radical 3)^4= 3^4 (radical 3)^4 = 81 radical 81 = 81 *3 radical 3 = 243 radical 3. Did I do this right? Is the answer right?
asked by Mom of 8