Questions Asked on
January 29, 2012

chemistry
For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under standard conditions. C8H18(g) + 25/2(O2)(g) > 8CO2(g) + 9H2O(g) DeltaH= 5113.3 kJ What is the standard enthalpy of formation of this
asked by Mike 
Business Math
Joyce took out a loan for $21,900 at 12 percent on March 18, 2000, which will be due on January 9, 2001. using ordinary interest, Joyce will pay back on January 9 a total amount of: Answer: $24,068.10 Ordinary interest is 360 March 18 = 77 days January 9 
asked by Liz 
trig
sin2x=cos3x then sinx=?(if 0
asked by arka bhaskar 
physics
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.0s later it is rising at a speed of 15m/s. Assuming air resistance has no effect, calculate its speed A) at launch and B) 5.0s after lauch
asked by Natasha 
Precalculus
Determine the exact value of cos 465 degrees a) √3 + √2/2 b) √2 + √3√2/4 c)√2  √3√2/4 d)2+√2√3√2/4
asked by Melinda 
physics
A fire hose held near the ground shoots water at a speed of 5.5 .At what angle(s) should the nozzle point in order that the water land 2.0 away (see the figure )?
asked by Anonymous 
Physics
A weight lifter performs a clean and jerk on 150 kg, raising it 2 m above the ground in 1.5 s. What is his power output during the lift?
asked by Hannah 
Physics
A cannon is rigidly attached to a carriage,which can move along horizontal rails but is connected to a post by a large spring, initially unstretched, of force constant 60000 N/m. The cannon ﬁres a 305 kg projectile at a velocity of 174 m/s directed
asked by amanda and leah 
Physics
You have 300 g of coffee at 55 degrees celcius. Coffee has the same specific heat as water. How much 10 degrees celcius water do you need to add in order to reduce the coffee's temperature to a more bearable 49 degrees celcius?
asked by Hunter 
Chemistry
1) Which of the following molecular solids will exhibit dipoledipole intermolecular forces: NH3, BF3, I2 and H2S? a) NH3, and H2S (correct) b) NH3, BF3, and H2S (BF3 has polar bonds, but is a nonpolar molecule) c) I2 only d) BF3 and I2 e) NH3, BF3, I2 and
asked by Hannah 
Physics
A high diver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.30 s after her feet first touch the water, what average upward force did the water exert on her?
asked by Emily 
Precalculus
Solve for x: 6^(x+3)  6^x = 215. I got answer as 1, is it correct?
asked by Jake 
Chemistry
Copper has density of 8.94 and crystallizes with the facecentered cubic unit cell. Calculate the radius of a copper atom.
asked by amy 
science
Circle the term that does not belong in each of the following groupings. 1. HC1 secretion Acetyicholine Histamine Secretin Gastrin 2. Gastric emptying Slowed by fats Enterogastric reflex Solid foods 3. Cephalic phase Reflex phase Intestinal phase
asked by Katie 
Business Math
Janet Jones borrowed $3,000 on 90day 12 percent note. Janet paid $250 toward the note on day 35. On day 80 she paid an additional $400. Using the U.S. Rule her adjusted balance after her first payments is: Answer: $2,785 Please do step by step. Thank you.
asked by Liz 
O Chem
By knowing the natural abundance of minor isotopes, it's possible to calculate the relative heights of M+ and M+1 peaks. If natural abundances are 12C  98.9% and 13C  1.10%, what are the relative heights, to the nearest 0.1%, of the M+ and M+1 peaks in
asked by Anonymous 
Physics
You have 300 g of coffee at 55 degrees celcius. Coffee has the same specific heat as water. How much 10 degrees celcius water do you need to add in order to reduce the coffee's temperature to a more bearable 49 degrees celcius?
asked by Help Please 
Chemistry
1. Which of the following statements concerning dipoledipole attractions is correct? a) Dipoledipole attraction is a weaker force than covalent bonds, being about 50% as strong. b) Dipoledipole attractions increase as the distance between the dipoles
asked by Hannah 
Physical Science
A person dives off the edge of a cliff 33m above the surface of the sea below. Assuming that air resistance is negligible, (a) How long does it dive last? (b) and with what speed does the person enter the water?
asked by Jessica 
physics
a toy cart at the end of a string 0.70 m long moves in a circle on a table. The cart has a mass of 2.0 kg and the string has a breaking strength of 40 N. Calculate the maximum speed the cart can attain without breaking the string solution
asked by Anonymous 
physics
A tortoise can run with a speed of 0.12 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 1.0 minutes. The tortoise wins by a shell (30 cm). (a) How long does the race take? (b) What is
asked by kris 
General Physics Pt.2
A proton is projected in the positive x direction into a region of uniform electric field E = 5.30*10^5 i N/C at t = 0. The proton travels 6.50 cm as it comes to rest. (a) Determine the acceleration of the proton. 5.07E13 (i) m/s^2 (b) Determine the
asked by LadyJ 
Science 7R HELP!
variety of plants and animals I have the match each pharse with the correct term and I don't know what phrase (word) for this term please help!
asked by Laruen 
physics
a kettle turns 1000j electric energy into 350j of heated water. what is its efficiency? where is the other energy 'wasted' to?
asked by 4611star 
Algebra 2
In a quiz program, 3 questions on sprots, 3 questions on general knowledge, and 4 questions on science are printed separately on 10 cards and placed upside down. John is asked to select 2 cards at random. What is the probability of Joohn selecting 2
asked by Dena 
Chemistry
1) Which one of the following molecules is the most polarizable? a) H3C – I b) H3C – CH3 c) H3C – F d) H3C – H e) H3C – OH I chose H3CI as the answer because the mm was the greatest. I added the mm of H, C, and I and got 141.934. Did I do this
asked by Hannah 
Physics  position time graph
The graph shows position as a function of time for 2 trains running on parallel tracks. The graph shows line A at a 45 degree angle,beginning at origin. Curve B also begins at origin, continues up and to the right (all in quadrant 1, like a sq root
asked by Nilan 
college soc 120
utilitarianism, deontology, and virtue ethics of gay marriage
asked by john 
Math
Red and blue beads are being strung to make a bracelet. How many different bracelets can be formed it each bracelet uses exactly 5 beads?
asked by Alex 
Physics
You have 300 g of coffee at 55 degrees celcius. Coffee has the same specific heat as water. How much 10 degrees celcius water do you need to add in order to reduce the coffee's temperature to a more bearable 40 degrees celcius?
asked by Hunter 
chemistry
A 9.96 mol sample of methane gas is maintained in a 0.836 L container at 296 K. What is the pressure in atm calculated using the van der Waals' equation for CH4 gas under these conditions? For CH4, a = 2.25 L2atm/mol2 and b = 4.28E2 L/mol.
asked by jim 
stat
When a confidence interval for a population proportion is constructed for a sample size n = 100 and the value of, p = .4 the interval is based on the (Points : 1)
asked by Anonymous 
chemistry
Which of the following is an example of a chemical change (change in chemical composition) that involves starting with a liquid and ending up with a gas? Burning gasoline (combustion). Boiling acetone. A pond evaporating. Condensation of steam.
asked by k 
Chemistry
1) Which of the following properties of water can be explained using hydrogen bonding arguments? 1. its ability to dissolve most ionic compounds. 2. its high boiling point. 3. its low vapor pressure a) only 1 or only 2 or only 3 b) 1 and 2 only c) 1 and 3
asked by Hannah 
physics
Its 80 kilometers from point A to point B. Someone travels at an average speed of 40 kilometers per day and takes a negligible amount of time at point B to turn around to head back to point A. At what average speed must the person travel back to point A so
asked by Anonymous 
physics
A motorist traveling at 16 m/s encounters a deer in the road 43 m ahead. If the maximum acceleration the vehicle’s brakes are capable of is −6 m/s2, what is the maximum reaction time of the motorist that will allow her or him to avoid hitting the deer?
asked by mo 
3 grade english
write three sentence about whales. use present tense in one sentence, past tense in one sentence, and future tense in one sentence. my son write three sentence i want did he write correct or not 1 whale willl swim to have some krill. 2 whale leaped out
asked by dw 
physical science
is the study of the moon's phases a pure or applied science
asked by keisha 
basic engineering electricity
At what current drain does the amperehour Energizer d cell drop to 75% of its value at 25mA?
asked by kali 
chemistry
What volume of carbon dioxide is produced when 36.7 g of calcium carbonate reacts completely according to the following reaction at 25oC and 1 atm?
asked by jim 
algebra
can you show work y +4}+ {y3x 6} =92
asked by Anonymous 
Math
From an exterior point P that is h units from a circle of radius r, a tangent line is drawn to the circle. Let y denote the distance from the point P to the point of tangency T. Express y as a !@#$%^&tion of h.
asked by Jennifer 
Statistics
A forest fire is burning down a narrow valley 3 miles wide at a speed of 40 feet per minute. The fire can be contained by cutting a firebreak through the forest across the valley. It takes 30 seconds for one person to clear one foot of the firebreak. The
asked by Xander 
Physics
Three identical conducting spheres initially have the following charges: sphere A, 4Q; sphere B, 9Q; and sphere C, 0. Spheres A and B are fixed in place, with a centertocenter separation that is much larger than the spheres. Two experiments are
asked by Tyler 
Precalculus
1. What two common identities are most useful for simplifying 2tanx/(sin^2x + cos^2x  tan^2x)? Two identities are: sin^2x + cos^2x = 1 and tan2x=2tanx/1tan^2x
asked by Melinda 
Physics
In a historical movie, two knights on horseback start from rest 88.0m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of 0.300m/s (squared), While Sir Alfred's has a magnitude of 0.200m/s (squared).
asked by Natasha 
SIMILARITY
WHAT ARE THE SIMILARITIES OF A PARK AND A PLAYGROUND?
asked by emily 
3 grade english
write three sentence about whale. use present tense in one sentence, past tense in one sentence, and future tense in one sentence.
asked by dw 
Chem
I really appreciate the help you gave me earlier. I was wondering if you could please look over these questions for me to? The answers will always be either reactant, product or neither. 1)P4(s)+6 Cl2(g)4 PCl3(l) Which side of the reaction will be favoured
asked by TINA 
Chemistry(Please check)
1) Which of the following properties of water can be explained using hydrogen bonding arguments? 1. its ability to dissolve most ionic compounds. 2. its high boiling point. 3. its low vapor pressure a) only 1 or only 2 or only 3 b) 1 and 2 only c) 1 and 3
asked by Hannah 
Chemistry
When a color television is on for 2.0 hours, 290 KJ are used. How long can a color television run on the energy from 1.0g of gasoline/
asked by Cindy 
Math
If the principal P = $900, the interest I = $882, and time t = 7 years. What is the rate? What is the future value?
asked by Monica 
Calculus
Let R be the region bounded by y=x^2, x=1, and y=0. Use the shell method to find the volume of the solid generated when R is revolved about the line x=11.
asked by Becca 
Chem
I have 4 questions, I got the answer for three of them and just want you to check and see if they are right and i do not know the answer to the fourth one. 1)4HCl(g)+O2(g)2H2O(g)+2Cl2(g)+114.4 kJ Which side of the reaction will be favoured by an decrease
asked by TINA 
Physics
How do you find the acceleration of an object on a velocitytime graph if the acceleration of the object is at t = 5 s in m/s2?
asked by Paige 
physics
A car is traveling at Vx =20 m/s. The driver applies the brakes, and the car slows with ax = 4m/s^2. What is the stopping distance
asked by larry 
Physics
You have 300 g of coffee at 55 degrees celcius. Coffee has the same specific heat as water. How much 10 degrees celcius water do you need to add in order to reduce the coffee's temperature to a more bearable 49 degrees celcius?
asked by Help Please 
Learning Strategies
You should study the modules you receive for course in the ordr provided in your A.STUDENT HANDBOOK b.PROGRAM OUTLINE C.STUDY UNIT D.STUDY GUIDE I chose (B) CAN SOMEONE TELL ME IF THAT IS RIGHT.
asked by Brenna 
English 7  Essay Check
Perseverance means to never give up during difficult times. For example, people may choose to persevere after experiencing a serious injury. Rosa Parks is a former civil rights leader. Rosa Parksâ€™ words and actions showed that she persevered in
asked by Laruen 
Chemistry
Mass of unknown solution=25.671 Mass ethanol =8.243 Assuming that prior experiments have shown the singlestep extraction removes only 72.0 % of the ethanol, the mass of ethanol in your original unknown is 11.45 Mass percent ethanol =44.6 % Given a density
asked by Forrest 
algebra
I AM TRYING TO SOLVE A SYSTEM OF EQUATIONS BY GRAPHING AND CAN GET THIS ONE. 3x + y = 2 4y = 12  12x HOW DO YOU DO THIS?
asked by dawn 
Center
How is the efficiency of pushing a concrete block up a wooden ramp increased
asked by Mike 
psychology
Stress has the ability to cause the immune system to: (Points: 5) be under stimulated. attack rather than support the body. repair itself. increase its resources.
asked by o 
Physics
A cannon is rigidly attached to a carriage,which can move along horizontal rails but is connected to a post by a large spring, initially unstretched, of force constant 60000 N/m. The cannon ﬁres a 305 kg projectile at a velocity of 174 m/s directed
asked by amanda and leah 
psychology
According to behavioral treatment approaches, abnormal behavior is learned through: (Points: 5) thoughts based on the perception of events. vicarious experiences. rewards and punishments. conflict experiences in early childhood.
asked by o 
math
The day started out at 16 F and ended at 25 F. Find the percent change for the temperature throughout the day?
asked by matt 
english
why is certification and censorship of films and programmes is necessary?  include children are immpressionable and my copy what they see  children are weak minded  shocks elderly
asked by 4611star 
Biology
What is the function of water in cellular respiration and photosynthesis? Detailed answer please
asked by Lisa 
Mathematics
A pilot flies a plane that averages approximately 210 km/hr. The plane leaves point A at a bearing of 40 degrees and flies two hours to point B. After a brief stop the plane leaves point B at a bearing of 125 degrees and flies for another 30 minutes before
asked by Jaskiran 
psyhics
A ball is dropped from the top of a 95 m building. With what speed does the ball hit the ground?
asked by kyle 
physics
ehy can't a machine be 100% efficient?
asked by 4611star 
Precalculus
Verify these answers please. 1. Which of the following functions would f(x) = log(base 10)x horizontally 4 units to the left? a) f(x)=log(base10)(x4) b) f(x)=4Log(base10)X c) f(x)=log(base10) x+4 Answer: C  2. State the
asked by Melinda 
Science 7R
the most complex organisms are (a.) animals b. bacteria c. fungi d. protists i choose a am i correct?
asked by Laruen 
chem
Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2(aq)+HCl(aq)Cl^1(aq)+HS^1(aq)
asked by Erik 
Physics
What equation gives the velocity as a function of time for an object with constant acceleration?
asked by Natasha 
ThankYou Reiny!!!
Thank you!
asked by Betty 
Algebra 2
a bag contains 3 red marbles and 6 green marbles a marble is drawn and then replaced a second marble is drawn and replaced and then a third marble is drawn . What is the probability that a red marble is drawn all 3 times?
asked by Susan 
physics
What equation gives the position as a function of time for an object with constant acceleration?
asked by Natasha 
physics
A person desires to reach a point that is 1.70 km from her present location and in a direction that is 40.0° north of east. However, she must travel along streets that are oriented either northsouth or eastwest. What is the minimum distance she could
asked by frank 
2nd Semester
2nd Semester begins tomorrow and I won't be having art anymore I'm having facs. So is there any useful tips you teachers would like to give me to get me a head start next semester. there are tons of things next semester passport day at my school, exams,
asked by Laruen 
physics
A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 16 m/s. If the brick is in flight for 3.4 s, how tall is the building?
asked by kaf 
English
Can you please check these sentences? I find it difficult to rephrase to sentences. Thank you. 1) thank you very much for helping me with my school search. 2) In the blog I noticed that your colleague wrote that the involved students come from the fifh and
asked by Henry2 
geography
1. What country possesses Easter Island off the coast of South America? Chile 2. What is the westernmost state in the United States? Alaska 3. What forms the natural boundary between Argentina and Uruguay? The Uruguay River 4. What is the name of the
asked by Reed 
ANATOMY
the three major vessels of the portal triad are the hepatic artery, hepatic portal vein and bile duct. What is the location of the triad relative to the liver lobules?
asked by Katie 
Precalculus
Given the parent function f(x)log(base10)x, state the equation of the function that results from a vertical stretch by a factor of 2/5, a horizontal stretch by a factor of 3/4, a reflection in the yaxis , a horizontal translation 2 units to the right, and
asked by Melinda 
ecology
In what environments would you expect obligate homeotherms to have the most significant advantages, and in what environments might facultative homeotherms have an edge?
asked by Jay 
Chemistry
1) Three factors control the rate of evaporation of a liquid: surface area, temperature, and strengths of intermolecular forces. More than one of the statements given described a correct effect. The statements are (1) the larger the surface area, the
asked by Hannah 
algebra
find the slope of a straight line that passes through the given pair of points (5,6) and (3,1)
asked by Brandy 
statistics
you are given 9 to 1 odds aganist tossing three heads with three coins, meaning you win $9 if you succeed and you lose a $1 if you fail
asked by Maureen 
Math
If REINY was reading story problems and if he did not know the algorithm steps to share to a simple problem, would he have time to be sarcastic?
asked by john 
Chemistry(Please check)
1) Which one of the following molecules is the most polarizable? a) H3C – I b) H3C – CH3 c) H3C – F d) H3C – H e) H3C – OH I chose H3CI as the answer because the mm was the greatest. I added the mm of H, C, and I and got 141.934. Did I do this
asked by Hannah 
accounting
where on a t account would I post completed a consulting engagement and received cash of 7800
asked by Kendra 
physics
A person lifts a 199 Newton stack of books 12 meters high in 7 seconds. How much power is used to lift the books?
asked by christy 
Physics
A rowboat passenger uses an oar to push the boat off the dock by exerting a force of 60.0 N for 2.0 s. What impulse acts on the boat?
asked by Pat 
english
could you pl correct the following sentence : nobody is understanding what is the problem our teacher has just explained
asked by R S Telagathoty 
Algebra II
What is the simplified version of (2x^(3)y^(2))^(2) and (z^4)/(2z^3) Thanks!
asked by Steven 
Precalculus
Explain how to do these please. 1. solve x=log(base2)*1/8 by rewriting in exponential form. 2. Solve log(3x+1)=5 3. Solve log(base x)8=1/2
asked by Melinda 
Physics
You have 300 g of coffee at 55 degrees celcius. Coffee has the same specific heat as water. How much 10 degrees celcius water do you need to add in order to reduce the coffee's temperature to a more bearable 49 degrees celcius?
asked by Hunter 
math
the record hight temperature for a date is 100.5 degrees above zero what is the correponding number of the sentence
asked by mite 
language arts
Where is the comma needed in the sentence? After traveling to Bryce Canyon, Utah, Karen drove to Canyonlands National Park, Utah, where she took pictures of the sandstone formation. I put in the commas already, I just want to know if this is correct
asked by riley 
Precalculus
Evaluate log(Base4) ^3sqrt64 (The ^3 is an exponent infront of sqrt 64) I keep getting wrong answer :
asked by Jake 
algebra
what is 4x15/2=1/2
asked by lizzy 
criminal justice
Describe occupations, agencies, or departments that you think may profit from actual or perceived increases in crime.
asked by sharday 
physics
a hairdryer turns 250J of electrical energy into 50J of heated air. how efficient is this machine and how much is wasted to sound?
asked by 4611star 
criminal justice
In your opinion, do people other than criminals profit from crime? Who are these people and how do they profit from crime
asked by sharday 
chem
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2(aq) + HCl(aq) Cl1(aq) + HS1(aq) This is what I think it is: Acid = HCl Base = S^2 Conjugate acid =HS^1 Conjugate base = Cl^1 2) H2O2(aq) + PO43(aq)
asked by Erik 
physics
why can't a machine be 100% efficient?
asked by 4611star 
COLLEGE MATH SYSTEMS OF EQUATIONS
1. Solve these systems of equations a. 3x + 6y + 3z= 3 2x  y + 4z= 14 x + 10y + 8z= 8 b. x + y + 3z= 10 x + 2y + 3z= 4 x + 4y + 3z= 6 2. Solve these systems of equations word problems. a. A movie theater sold 450 tickets to a movie. Adult tickets cost
asked by LimaBeans93 
math
mallory emailed a funny cartoon to Ann. she told ann to send it to five friends with instructions for each of them to send it to five other friends. after four cycles of emailing,how many cartoons will have been sent? the answer is 156 but i don't know how
asked by lisa 
English  Native speakers
Hello I have a question concerning the following sentence: Teachers are these days very patient and give more information and they explain it better. Can we say explain them better also? Which one is correct?
asked by Mark 
chemistry
Which of the following is a situation where an object’s potential energy varies as a result of changes due to its chemical composition? The melting of ice. The burning of wood. A ball rolling down a hill. A parachute slowing a skydiver's fall.
asked by k 
engineering
an airplane was moving with a velocity equal to 300 mph when the velocity was increased with uniform acceleration to 600 mph in 5 min. calculate the number of miles the airplane traveled during that interval of time
asked by Anonymous 
chemistry
A sample of steam with a mass of 0.552 and at a temperature of 100 condenses into an insulated container holding 4.35 of water at 6.0. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture?
asked by amy 
chemistry
Find the mass of urea needed to prepare 51.7 of a solution in water in which the mole fraction of urea is 7.80×10−2.
asked by amy 
physical education
I'm doing a gym project on some terms. I need to find pictures for each term. What would be a good picture to represent the words, target zone and resting heart rate?
asked by brielle 
physics
A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. The ball leaves the club at a speed of 15.6 m/s at an angle of 41.4° above the horizontal. It rises to its maximum height and then falls down to the green.
asked by Anonymous 
7th grade science
What are mass extinctions?
asked by saranghae12 
Chemistry
If 35cm cube of gas is heated from 14 degree celsius to 55 degree celsius.what is the new volume?
asked by Samuel 
Marketing
How does Tropicana use the marketing mix? By marketing mix, I am referring to the 4 P’s of Marketing Price, Product, Place and Promotion
asked by Christopher 
English
I need to improve the objectives I wrote for my Comenius project. Can you please help me? They must be persuasive. 1)to increase the students’ general knowledge and understanding of concepts, procedures and attitudes by involving them actively and
asked by Henry2 
English
Here is the second part I need you to check. Thank you. 1)To maximize the use of a wide range of Information and Communication technologies (I want to make it more specific: how do modern students communicate?) as well as of English as a medium of
asked by Henry2 
Physics
Can you think of any ways to measure instantaneous speed directly?
asked by Natasha 
physics
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time." If the ball is kicked with an initial velocity of 24.8 m/s at an angle of 62.5° above the ground, what is the "hang time"?
asked by Anonymous 
math
tickets to a school play cost 1.5 in advance and 2.0 at gate. by selling all 200 tickets students got $360. how many tickets did they sell in advance?
asked by sonia 
Math
How do I set this up and solve? You are planing a rectangular dining pavilion. Its length is 3 times its width x. You want a stone walkway that is 3 ft wide around the pavilion. You have enough stones to cover 396 ft squared and want to use them all in the
asked by Jane 
Biochemistry
1. MES (2(NMorpholino)ethanesulfonic acid) is a common buffer used in biochemistry labs to stabilize proteins. The pKa for MES is 6.09. a. What is the pH of 1 liter of a 200 mM MES aqueous solution? Clue: you will need to solve a quadratic equation. (2.5
asked by Peter 
SpanishPlease check my work
Could someone please check this for me. I had to rewrite the following sentence using a direct object pronoun in two different ways. I wrote: Nosotros queremos leerlos. Los hosotros queremos leer. Thank you for checking
asked by Jillian 
math
The perimeter of the triangle is 40 inches. If you wanted to construct a similar triangle with a perimeter of 50 inches, what would be the length of the shortest side of the triangle?
asked by Megan 
Biology
write a paragraph describing the importance of dna to science, medicine, and all living organisms
asked by Sana 
algebra
Annual profit in thousands of dollars is given by the function, P(x) = .1x2 + 50x  300, where x is the number of items sold, x ¡Ý 0. find the profit for 5 different values of x
asked by Betty 
American Government
What do America's founding principles have roots in?
asked by Carol 
Spanish 8th grade
I have a question about describing my house. I know the word is viejo for old, nuevo for new and modern is moderno. If I say Mi casa is modern do I say Mi casa is modena by changing the "o" to the feminie "a". The same for viejo if I describe my house
asked by Matt C. 
math
A statue is made of a mixture of copper and zinc in a ratio of 11:4 (copper to zinc). If the weight of the statue is 3165 pounds, what is the weight of the copper?
asked by Megan 
Physics
An 18yearold runner can complete a 10.0km course with an average speed of 4.39 m/s. A 50yearold runner can cover the same distance with an average speed of 4.27 m/s. How much later (in seconds) should the younger runner start in order to finish the
asked by Natasha 
Business
Select an organization with which you are familiar and discuss the impact of that organization’s level of social responsibility on a stakeholder group of your choice
asked by cynthia 
Culinary arts
What does the term coving mean?
asked by Brooke 
Precalculus
What two common identities are most useful for simplifying 2tanx/sin^2x + cos^2x  tan^2x? Two identities are: sin^2x + cos^2x = 1 and tan2x=2tanx/1tan^2x
asked by Melinda 
painting
Write a 500 to 700word summary that compares and contrasts Neoclassicism, Impressionism, and Abstract Expressionism. Use the selected artwork as your examples. Include the following in your discussion:
asked by nathan 
Physics
Directly below on the floor is a stationary 428Hz source of sound. The microphone vibrates up and down in simple harmonic motion with a period of 2.3 s. The difference between the maximum and minimum sound frequencies detected by the microphone is 2.2 Hz.
asked by Claire 
English
Thank you. Here are the sentences again for you to check At the end of the twoyear program students should be able to... 1)maximize their use (or upgrade their knowledge) of a wide range of Information and Communication technologies (I want to make it
asked by Henry2 
c b n
can you pl explain the impacts precautions once you are affected by cervico brachial neuralgia
asked by R S Telagathoty 
math
Integers of 81? 1,3,9,27,81 is this right please let me know
asked by Andy 
Trigonometry
What representations do not change the location of the given point (7,140°)?
asked by Kelvin 
5 grade science
what was your hypothesis? explain the process that your followed to determine the results for your experiment.
asked by dk 
physics
A ﬂowerpot falls from a window sill 25.3 m above the sidewalk. What is the velocity of the ﬂowerpot when it strikes the ground? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s How much time does a passerby on the sidewalk below have
asked by shay 
business
Can somebody explain what organizational structure of a company means? I read the definitions, but I still do not understand it.
asked by Brenda 
gastro
could you pl explain in detail the following ailment or diagnosis called METAPLASIA how it could be cured and all
asked by R S Telagathoty 
physical science
Joe baked a cake for his mother's birthday. When he removed the cake from the oven, Joe noticed that the cake had not risen. Joe guessed that the baking powder he had used was too old. He designed the following experiment to test his idea. Joe prepared two
asked by keisha 
7th grade science
what are intermediate forms of species for gradualism and punctuated equilibria? Please help!! Thank you!!
asked by saranghae12 
math
admission to a park is $5 for an adult ticket and $1 for a child. If $100 was collected and 28 admissions were sold on a day, how many tickets were sold and how many child tickets were sold
asked by chris 
Chemistry
How many grams of CO2 are formed when 32 g of O2 reacts with 23 g of C2H5OH?
asked by Bob 
English Infinitive phrases
For this question, the directions say to name the TWO infinitive phrases in this sentence... His wish to succeed as an architect made him work hard. I know that "to succeed as an architect" would be one infinitive phrase, but there isn't another "to" ? So
asked by Erica 
5 grade english
write about your actions your observations and your thoughts. remember you are the person(michael jackson) my son say that you have to pretend that your michael jackson and to write about your actions your observation and your thoughts. but you have to do
asked by dk 
Time
January 29, starting at 10:00 AM Pacific (1:00 PM Eastern) What time is it in central time?
asked by Andrew 
physics
How long is a rocket in the air if it is shot at an angle of 55¢ª with an initial velocity of 25 m/s and traveled for 88 m
asked by Kristi 
mathgeometry
what does a caster net of a 4th of a 3D circle look like
asked by shahriar alam 
physics
A lever uses a force 212 Newtons to move a rock that weighs 2000 Newtons. What is the mechanical advantage?
asked by christy 
algebra
Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places. (6.2 · 10^7) / (4.15 · 10^3)
asked by jackie 
calculus
A plane flying along a straight path loses altitude at the rate of 1000 ft for each 5200 ft covered horizontally. What is the angle of descent of the plane? (Round your answer to one decimal place.)
asked by Sam 
physics
A tennis ball is thrown vertically upward with an initial velocity of +7.5 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s How long will the ball take to
asked by shay 
Physics Help Please
Suppose a 65kg person can run 1000m in 5min. Assume that each stride is 1.5m long, and with each stride the runner must supply an amount of energy equal to her kinetic energy. How much energy (in food calories) is required to run 1km? Is your answer
asked by Haylee 
Physics
An object moving to the right has a positive acceleration which is decreasing. Is this object speeding up or slowing down? Explain why? Please helppp
asked by Anonymous 
Math
Please let me know if I figured this out correctly. Directions: Find the slope of a line perpendicular to the graph of each equation. 1) y= x/5  7 Answer: Slope = 5 2) 2x + 3y=5 Answer: Slope = 3/2 Thank you!
asked by Kate 
physics
If the roller coaster track has a hill at the end that was equal in height to the original hill, would the marble make it all the way to the top? Please explain it to me! Thanks.
asked by alz 
Physics
The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 490 paces, then due east for 120 paces. Dig." But when you arrive, you find an angry dragon just north of the tree. To
asked by Jordan 
ochem
In a sn2 reaction why do we need sp3 hybrid orbital and not sp2 for the substrate
asked by lou 
chemistry
How many MOLES of oxygen are present in 6.56E+22 molecules of nitrogen monoxide
asked by Anonymous 
mathword problem
admission to a park is $5 for an adult ticket and $1 for a child. If $100 was collected and 28 admissions were sold on a day, how many tickets were sold and how many child tickets were sold
asked by chris 
math
what is the function if x is 3,0,7,5 and the y being 16,10,24,20?
asked by makayla 
chemistry
How many MOLES of oxygen are present in 6.56E+22 molecules of nitrogen monoxide How many ATOMS of nitrogen are present in 1.79 moles of nitrogen monoxide ?
asked by Anonymous 
macroecon
Which of the following are considered by economists to be "land"? I. The 50 acres he uses to grow corn II. The 40 acres he uses to graze sheep III. The 10 acres on which he has built his house and barn IV. The sheep that graze on his farm V. His house and
asked by Anonymous 
5 grade english
write about your actions your abservations and your thoughts. remember you are the person.(Michael Jackson)
asked by dk 
statistics
Someone who has never seen a normal die before decides to estimate the mean value of all its faces (μ) by rolling it many times. First, they are told that the standard deviation is σ = 1.7. Then, they roll the die 50 times and get a sample mean of xbar
asked by Nadia 
CPR
Is there a website where you can find a video for the AHA 2012 CPR? AHA changed the CPR. Thanks, Tia
asked by Tia 
3 grade math
write to explain when you divide 24 by 6, what fraction of 24 are you finding? find the answer.
asked by dw 
science
what does oxytetracycline contain that would destroy bacillus cereus
asked by martha 
geography
Which great lake is closest to Michigan?
asked by lizzy 
biology
I have to do a line graph showing generation time every 20 mins a cell diving upto 360 mins. using binary fission . am getting mixed up how to mark it down on two axis.9 boxes with mini boxes of 10 in axis i was going to use for time and vertical axis has
asked by sharon 
science
A ball moving eastward with a velocy of 15m/sec bounces off a wall with a velocity of 12m/sec in the opposite direction.If the mass of the ball 200g.Calculate the change in the ball's momentum
asked by Zama 
Algebra 2
a bag contains 3 red marbles and 6 green marbles a marble is drawn and then replaced a second marble is drawn and replaced and then a third marble is drawn what is the probability that a red marble is drawn all 3 times?
asked by Anonymous 
Business Finance
Earl Miller plans to buy a boat for $19,500 with an interest charge of $2500. Earl figures he can afford a monthly payment of $650. If Earl has to pay 36 equal monthly payments, by how much can he afford the boat per month?
asked by Terry 
program planning and evaluation
Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity. 1. a.
asked by ihuoma okoro 
chemistry
What is the percent by mass of H in ethyl alcohol (C2H6O)? The molecular weight of carbon is 12.0107 g/mol, of hydrogen 1.00794 g/mol, and of oxygen 15.9994 g/mol. Answer in units of % Your answer must be within ± 0.1%
asked by tyeisha colley 
Math
I need $35,000 in 5 years @ 3% interest. How do I calculate how much I need to put in each month to make it.
asked by Sherri 
Business Finance
The property on Al's garage is worth $300,000. Al has a fire insurance policy of $180,000 that contains an 80% coinsurance clause. What will the insurance company pay on a fire that causes $210,000 damage? If Al met the coinsurance requirement, how much
asked by Terry 
math
what is the net of a 3D quarter of a circle look like
asked by shahriar 
bio
why does 10 % Sodium Chloride Solution affect and kill Sarcina lutea but not Serratia marcescens Escherchia coli Bacillus subtilus Bacillus cerus? I am trying to find some evidence of why but can't. It is true though because I tested it in a lab.
asked by rebekah 
human services
Please let me know if I am correct. An example of criterion validity is when a human service professional uses a scale to measure risk of suicide. If the scale is valid it should correlate with the occurence of negative behaviors which harm one self
asked by Anonymous 
algebra
the cost of renting a car is #22 a day plus 20 cents per mile. How far can May drive in one day if she only has $108?
asked by tere 
Physics
How do you find the acceleration of an object on a velocitytime graph if the acceleration of the object is at t = 2 s in m/s2?
asked by Paige 
chem
write an equation for which component of the phosphate buffer (H2PO4/ HPO4^2) reacts when HCl is added. Do the same for NaOH. I think that the H2PO4 will react with the NaOH but its only a guess and I'm confused as to how I would go about doing this.
asked by jean 
human services
can you give me an example of content validity.
asked by Anonymous 
math
the length of a retangle is twice the width.the area is 200yd^2??? Can someone help me please!!!!!find the lenght and width
asked by chelsea 
Physical Science
If there were no air resistance, a quarter dropped from the top of New York's empire state building would reach the ground 9.6 seconds later, what would its speed be? How high is the building?
asked by Brody 
math
give exact and approximate to three decimals places x^2+8x+16=25 Please help me solve this
asked by chelsea 
Physics
An object moving to the right has a positive acceleration which is decreasing. Is this object speeding up or slowing down? explain why?
asked by Anonymous 
Geometry
Z is between I and P. Solve for x and find IP. IZ= 3x+5 ZP= 4x+13 IP= 15x22
asked by Monique 
algebra
the number of people the school can hold is at most 200. how can i present this in inequality is this correct x=
asked by aj 
Social  Studies
What was the life for the African slaves on the sugar plantation in Guyana?
asked by Sasha 
English Lit
I have a question about Henry II. What did he do that solidified his power as king but led to economic problems and helped incite conflict with the church. The possible answers are: Executed all Bishops who were opposed to his rule Gave enormous finiacial
asked by Emily 
Marketing Management
What are some market conditions that can influence a firm decision to enter foreign markets?
asked by Anonymous 
PHYSICS
You have 300 g of coffee at 55 degrees celcius. Coffee has the same specific heat as water. How much 10 degrees celcius water do you need to add in order to reduce the coffee's temperature to a more bearable 49 degrees celcius?
asked by Hunter 
SOSO
what ARE the similarites and differences between parks and playgrounds!
asked by emily 
Matheematics: Circles And Circumference
you have two coins with a total circumference of 116.18 millimeters. How much money do you have? Please Help
asked by Ayana Reid 
Math
Please let me know if I figured this out correctly. Directions:Write an equation for the line that is perpendicular to the given line and that passes through the given point. 1) y=x3; (4,6) Answer: y=x10 Thank you!
asked by Kate 
Chemistry
A robust first grader goes for swimming lessons three times a week, and he enjoys it thoroughly. During the first week of December, he develops an upper respiratory infection, starts coughing continuously, and has a high fever of 39°C. His condition
asked by Nikki 
arithmetic
write 14 over 4000 as a decimal
asked by tish 
Math
A circular flower bed has a radius of 33.2 m. An insect crawls around the edge of the flower bed at a rate of 2 meters per minute. About how long does it take the insect to crawl around the flower bed?
asked by Desmond 
algebra
5x^3y25x^2y
asked by Anonymous 
Physics
A spaceship lifts off from the Earth with constant acceleration. 9 seconds into the flight, a small piece of the ship breaks off and falls back to the Earth. If the piece hit the ground 11.5 seconds after breaking off from the spaceship, what is the
asked by Kayla 
geometry
for paralleogram ABCD, m
asked by Jayce 
Chemistry
1) The order of the boiling points for the hydrogen halides, except for HF, is HI > HBr > HCl. The reason for this order can be attributed to a) the relative covalent bond strengths. b) differences in hydrogen bonding. c) differences in dipoledipole
asked by Hannah 
business
I need help Describing the organizational structure for Walmart.
asked by Mark 
Algebra
Please Check these P(x)= .1(100)^2 +50(100)+300= 3,700,000 P(x)= .1(150)^2 +50(150) +300= 4,950,000 P(x)= .1(250)^2 +50(250) +300= 5,950,000 P(x)= .1(350)^2 +50(350) +300= 4,950,000 P(x)= .1(450)^2 +50(450) +300= 1,950,000
asked by Betty 
Chemistry
What is the molar mass of hydrogen gas, H2?
asked by Liz 
Physics
Soccer player kicks a ball down field. The ball's initial velocity is 30 m/s, 30 degrees above horizontal. a) What is the ball's horizontal velocity at the maximum height of the ball's trajectory? b) What is the horizontal displacement of the ball just
asked by Sejul 
College Algebra
Annual profit in thousands of dollars is given by the function, P(x) = .1x2 + 50x  300, where x is the number of items sold, x ¡Ý 0. 1.describe the meaning of the number .1 in the formula 2.describe the meaning of the number 300 in the formula 3.find
asked by Ruth 
Trigonometry
What representations do not change the location of the given point (7,140°)?
asked by Kelvin 
Chemistry
Calculate the energy in kJ/mol of a mol of photons in the ultraviolet region of the electromagnetic spectrum that has a wavelength of 2.88 × 107 m. Express answer in scientific notation. I got 4.16 * 10^8 but the correct answer is supposed to be 4.16 *
asked by Kyle 
Physics
A 20.0kg curling stone at the hog line and moves 28.35m [west] to sit on the button and score a point. If the coefficient of kinetic friction between the stone and the ice is 0.00200, what was the initial speed of the stone when it was released?
asked by lola 
physics
The summit of a mountain, 2270 above base camp, is measured on a map to be 4610 horizontally from the camp in a direction 30.9 west of north.What are the components of the displacement vector from camp to summit? Choose the axis east, axis north, and axis
asked by Anonymous 
Chemistry
1) Given the following “substances” and their normal boiling points, in celsius. G:43.8 Celsius J:93.7 M:56.7 T: 83.5 R:63.6 Which set below correctly lists some of these liquids in order of increasing intermolecular forces at 20 oC? a) G < R < J b) J
asked by Hannah 
Business (Legal Environment of Business)
Edward received unsolicited faxes from Direct Access in violation of the Federal Telephone Consumee Protection, Act, which makes it illegal to send unsolicited faxes. Edwards, a Nevada resident, sued Direct, not a Nevada resident, in state court in Nevada
asked by shirley 
chemistry
1228g/l to g/ml
asked by jaquesha 
Physics
A diagram has vector A at 30 degrees above the positive x axis. length = 3 m Vector B is ON the negative xaxis. length = 1 m Vector C is ON the negative yaxis. Length is 2 m What is the direction in degrees of vector a + vector B + vector C?
asked by Sushmitha 
Marketing Management
What is the role of the WTO and economic communities in encouraging free trade?
asked by Amy 
alg2\trig
if a3= 17 & a8=37 are terms in annarithmetic sequece, fina a1 & d. the answer is a1=9 & d=4 but i don't understand how they got the answer, please help!
asked by dianela 
Physics
A(n) 5.52 g bullet is fired into a(n) 3.07 kg ballistic pendulum and becomes embedded in it.The acceleration of gravity is 9.8 m/s^2. If the pendulum rises a vertical distance of 4.48 cm, calculate the initial speed of the bullet. Answer in units of m/s
asked by amanda and leah 
math
what is the net of a circle
asked by shahriar 
Marketing
Can you give me an example of a product and its marketing mix? By marketing mix, I am referring to the 4 P’s of Marketing Price, Product, Place and Promotion For example like Yoplait, but I am not sure how the company uses the 4 P’s
asked by Savannah 
Algebra
Identify any holes and vertical asymptotes of the graph of the equation y=6x^22/3x^2+17x+10 ?
asked by Brecken 
English
As promised, I'm posting you the 5 sentences to be checked. 1) Thank you very much for helping me with my school search. 2) Your colleague wrote in her blog that the involved students come from the fifh and sixth classes. Actually, they are between sixteen
asked by Henry2 
Algebra
Find the value of y so that the line passing through the two point has the given slope. (2,y) (4,5) m=5 (m=slope) how do you do this?
asked by Lee 
Chemistry
1) Determine the value of delta H net for the following equation: SnBr2(s) + TiCl4(l) > TiBr2(s) + SnCl4(l) I am not sure how to solve this.
asked by Hannah 
Physical Science
Three balls (see below) are dropped simultaneously from the 40th floor of a tall building into the air below. A) In what order will they hit the ground, or will they arrive at the same time? B) Provide an explanation for your answer above. Ball A (softball
asked by Aubree 
Math
Sam rolls a standard die, and then Ruth rolls the same die. The probability that Ruth's number is higher than Sam's can be written as a/b where a and b have no common factors greater than 1. Find a.
asked by Theo 
math
find the maximum profit of P(x)=4000(1000/(x2))
asked by larren 
math
if the surface area of the sphere is 154 cm, find its volume.
asked by sainath 
math
if it takes 1/2 hour to clean 1/8 mile, how long will it take to clean 2.5 miles
asked by Liam 
Math
Every day Sally saved a penny, a dime, and a quarter. What is the least number of days required for her to save an amount equivalent to an integral number of dollars?
asked by Eli 
Physics
A water pistol aimed horizontally projects a stream of water with an initial speed of 5.65 m/s. How far does it travel before dropping a vertical distance of 1.50 cm?
asked by anonymous 
pharmacology
1. Which one of the following drugs would you instruct a patient to take during a fasting period? A. Buspirone; B. Probucol; C. Lisinopril; D. Oxcarbazepine I think B. 2. You're training a new employee. He wants to know how to determine which needle to use
asked by Alisha221 
algebra
parking lot had a length that is 7 yards greater than thre width. the area of the lot is 450 square yards. what is the length and width?
asked by bob 
goverment
which region of the nation receives the highest percentage of its revenues form the federal goernment> a. south b. northeast c. northeast e. west
asked by tdp 
math
When you roll a quarter on its edge, how far does it travel with each complete revolution?
asked by Aundria Flecher 
Human Service
Can anyone help me answer these question What was Jan Adams view of teaching and what it should accomplish? what was Jane Adams view of how men and women should care about each other.
asked by RT 
Biology
During the cell cycle, if the cell detects that mistakes have been made in replication, the cell may die by apoptosis. True/False
asked by Jaxon 
chemistry
What volume of hydrogen gas is produced when 19.6 g of sodium reacts completely according to the following reaction at 25oC and 1 atm? sodium (s) + water (l) sodium hydroxide (aq) + hydrogen (g)
asked by amanda 
Physics
An object moving to the right has a positive acceleration which is decreasing. Is this object speeding up or slowing down? Explain why?
asked by Anonymous 
Physics
Three charged particles form a triangle: particle 1 with charge Q1 = 84.0 nC is at xy coordinates (0, 4.60 mm), particle 2 with charge Q2 is at (0, 4.60 mm), and particle 3 with charge q = 40.0 nC is at (6.40 mm, 0). What are the x component and y
asked by Tyler 
statistics
find the probability of by taking a coin tossed 50 times
asked by jutika 
Algebra(please Proof Read
P(x)= .1(100)^2 +50(100)+300= 3,700,000 P(x)= .1(150)^2 +50(150) +300= 4,950,000 P(x)= .1(250)^2 +50(250) +300= 5,950,000 P(x)= .1(350)^2 +50(350) +300= 4,950,000 P(x)= .1(450)^2 +50(450) +300= 1,950,000
asked by Betty 
physics
Discuss what happens when a man fires a pistol in front of a flight of stairs in a large hall.
asked by victoria 
physics
A student tries to produce notes of higher frequency by blowing a trumpet harder Discuss whether he will succeed?
asked by daniel 
Psychology
Jiskha Support Team, I am supposed to do a written assignment however I am having a problem with understanding instruction number #1 and #3 #1 through #4 is part of the requirement for my written paper #1). Must include an introductory paragraph with a
asked by Sharon 
Physics
How do you find the acceleration of an object on a velocitytime graph if the acceleration of the object is at t = 5 s in m/s2?
asked by Paige 
science
what are the molecular or formula masses of each of the following compounds,al[oh]3,hno3,pcl3,cuco3,feso4
asked by Anonymous 
Calculus
Let R be the region bounded by y=x^2, x=1, and y=0. Use the shell method to find the volume of the solid generated when R is revolved about the line y=2.
asked by Becca 
Math
A sequence of four integers is both arithmetic and geometric. if the sum of the four numbers is 20, find the first integer in the sequence.
asked by Erik 
program planning and evaluation
Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity. 1. a.
asked by ihuoma okoro 
Biology
There is probably a really obvious answer to this but could you help please? In his lifetime a man produces many millions of spem cells and yet he is most unlikely to have more than ten children. Suggest a biological advantage of producing such vast
asked by Lucy 
Algebra
In 1994, the life expectancy of males in a certain country was 63.8 years. In 2001, it was 66.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994. The linear function e(t) that fits the data is? Use the
asked by Debbie 
Calculus
Find the volume of the solid formed when the region bounded by y=3x^2 and y=36x^2 is revolved about the xaxis.
asked by Becca 
Management
Do managers work in a vaccum?
asked by Anonymous 
Calculus
Find the volume of the solid whose base is the region bounded by y=x^2 and the line y=0 and whose cross sections perpendicular to the base and parallel to the xaxis are semicircles.
asked by Becca 
geometry
the sides of an acute triangle are x, 35, and 37, where x is the shortest side. find the range of possible values for x and express it as an inequality.
asked by tab 
intense algebra
which value is the closest to 1/9.24/25 a. 0 b. 0.5 c. 1 d. 21/20
asked by cain 
math
Q: Convert 4x^2 + 4y^2 8x 16y 29 = 0 into standard form. I first started by pairing the like terms together, getting: 4x^2 8x + 4y^2 16y = 29 The next step, I'm a little confused. I know I need to complete the square, but I'm not sure how to fully
asked by Kenneth 
literary
what are least three elements in the poem that you found interesting or engaging(e.g., form, language, conten, and/or other literary elements).
asked by Anonymous 
physics
Suppose a 65kg person can run 1000m in 5min. Assume that each stride is 1.5m long, and with each stride the runner must supply an amount of energy equal to her kinetic energy. How much energy (in food calories) is required to run 1km? Is your answer
asked by Hayli 
math
126 books were donated to the school. there are seven classes and each will get an equal number of the books for its classroom library. how many books will each classroom get?
asked by john 
Chemistry
An 850 gram chunk of ice at 0 degrees Celsius is dropped into a container holding 1.7 kg of water at an initial temperature of 35 degrees Celsius. Due to the presence of the ice, the temperature of the water eventually drops to 0 degrees Celsius. Show a
asked by Selena 
calculus
Consider the function f(x) = piecewise [(x^3)(cos(1/x)) , x=/=0], [0, x=0]. Use the definition of the derivative at a point to determine if f is differentiable at x=0 I am not sure how to start this question. Am I supposed to plug in x = 0?
asked by Daniel 
mechanical engineering
A railroad car that weighs 20,000 lb is traveling eastward with a velocity whose magnitude is 5fps. A second car, on the same track, that weighs 40,000 lbs also traveling in an easterly direction with a velocity of 7.8fps. When the cars collided, they
asked by Anonymous