Questions Asked on
November 12, 2017

Physics
Suppose that a comet that was seen in 545 A.D. by Chinese astronomers was spotted again in year 1937. Assume the time between observations is the period of the comet and take its eccentricity as 0.11. What are (a) the semimajor axis of the comet's orbit
asked by Austin 
PLEASE HELP CHEM
1. Name 3 insoluable compounds, each with a different anion 2. Name 3 strong acids, only 1 can be from group 17 3. Name 3 strong bases, all from different groups
asked by Maxine 
science
A uniform force of 30N acts on a mass 2.5kg initially at rest for 5seconds then it withdrawn and a retarding force F now acted on the mass in the direction of the motion to reduce its velocity to 12 m/s.( calculate the momentum of mass before the retarding
asked by naomi 
Ed tech
Which of the following questions will most likely be answered by displaying data on a bar graph? A. Which bank account earned interest the fastest last year? B. Which ice cream flavor do the most students prefer? ** C. How many total hours did the class
asked by Mark 
Physic, maths, chemistry, biology
A body of mass 0.1kg is moving on circular path of diameter 1m at the rate of 10 revolution per 31.4sec, then then centripetal force acting on body is A) 0.2N B) 0.4N C)2N D) 4N
asked by Sahil 
chemistry
15. Which of the following (all at STP) will contain the most atoms? (a) 454 L of helium gas (b) 80.00 g of argon gas (c) 454 L of argon gas (d) 80.00 g of helium gas
asked by i 
Maths
A shopkeeper buys an article whose printed is rs 4000 from a wholesaler at a discount of 20% . the rate of sales tax under vat on the article is 8%.
asked by Arshi 
Maths
A shopkeeper buys an article whose printed is rs 4000 from a wholesaler at a discount of 20% . the rate of sales tax under vat on the article is 8%. If he sells the article to a consumer at the printed price plus tax
asked by Arshi 
Math
One angle of a parallelogram measures 80degree. Find the measure of each of it's remaining angles.
asked by Vishakha 
Algebra
1.what is a polynomial function in standard form with zeros 1,2,2, and 3 A. X^4+2x^3+7^28x+12 B. X^4+2x^37^28x+12 C. X^4+2x^37^2+8x+12 D. X^4+2x^3+7^2+8x+12 I’m guessing B but I’m honestly not sure on what I’m doing
asked by Samantha 
Maths
The denominator of a fraction is5 more than the numerator. If the numerator is increased by 18 and the denominator is decreased by 4, the fraction becomes25/8. Find the fraction.
asked by Kavi 
CS/Programming
Hi,I'm an absolute beginner in this field and this may be a dumb idea.But as mind came up with this,I simply doesn't feel like neelcting the idea asking for some advice.So here it is. If I want my phone to play a song when it's fully charged, can I use
asked by S 
Physics
A tennis player hits a 58.0 g tennis ball so that it goes straight up and reaches a maximum height of 7.02 m . Part A How much work does gravity do on the ball on the way up? Part B How much work does gravity do on the ball on the way down?
asked by Jamie 
Physics
A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. Part A How much work does
asked by Jamie 
Physics
A 1.45 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.25 m/s , and at point B it has slowed to 1.34 m/s . Part A How much work was done on the book between A and B? Part B If 0.750 J of work is done on the book from B to
asked by Jamie 
BiologyASAP
In a reaction you use 400 ul of 12mM Bgalactosidase. Add 2.3 ml of buffer and 0.3ml of ONPG to a cuvette. what is the final concentration of the cuvette? Answer below to one decimal place.
asked by Jane 
Social StudiesLand Use
1. Because the Inuit live in an environment that is too cold it grows crops, they rely heavily on ____ and ___instead. a. melting ice, clearing trees b. snow, ice c. irrigation, manufacturing d. hunting, fishing 2. Which of the following is a thirdlevel
asked by DMM 
Ethics and philosophy
I have to write how Martin Luther King is inspirational, must include: 1. Date of birth,childhood, education, job, family. 2. How are they inspirational? What have they done in their life you admire?
asked by Leah 
Math
Evelyn drinks 8 glasses of water a day,which is 56 glasses of water a week. How many glasses of water does she drink in a year?(1 year =52 weeks )
asked by Ashlym 
Math
2a+b=11 and 4a^2 +b^2=101, what is the value of ab? A 4 B5 C12 D6 E20
asked by Jessica 
Chemistry
Can someone help me find the grams of what I produced. This is my first experiment I've ever done before and it was fun. Na2CO3 + 2HCl = 2NaCl + H2O + CO2 Empty crucible is: 33.076g I Started with 0.575 Na2CO3 How do I set this up to find how much NaCl
asked by Henry 
Physics 110
A pendulum suspendentfrom the roof of the bus moving along a horizontal track makes an angle of 5* with the vertical. 1. what forces are acting on the the pendulum bob? 2.Determine the acceleration of the bus?
asked by Horance 
Physics
A blue ball travelling at 2m/s collides with a red ball at rest on a table. After they collide, both balls move in the same direction. Both balls have the same mass. If the blue ball continues to move with a reduced velocity of 0.2m/s, what is the velocity
asked by Maria 
Chemistry
calculate the percent deviation from ideal behavior: 1.30 mol N2 in a 2.64L container at 59 °C exerts 27 bar pressure.
asked by Peace 
maths
find the sum of the first 12th terms of the sequence 8, 5, 2 ......
asked by nnaji neme 
Math
Jack is four years older than Mark and eight years older than Dave. The product from Mark's and Paul's age is greater by 16 than the product from Jack's and Dave's ages. In this group of 4 children, two of them are twins. Who are the twins? What is the age
asked by Burt 
Physics
A wild horse starts from rest and runs
asked by Anonymous 
Math
I am confused on this: Explain how to use a number line to find the opposites of the integers 3 units away from 7. What does it ask you to do here, and which way to you go when it asks you 3 units away from 7?
asked by riona 
Maths / physics
A blue ball travelling at 2m/!@#$%^&s a red ball at rest on a table. after they collide both balls move in the same direction. Both balls have the same mass. The blue ball continues to move with a reduced velocity of 0.2m/s what is the velocity of the red
asked by Maria 
Physics
A wild horse starts from rest and runs
asked by Anonymous 
Multi Media
It's dark and cold outside at night, good thing this _______blazes bright.
asked by Kishandra Jones 
Algebra 2
How do you find the exact solutions of x^2 (y  6)^2 = 36 and y = x^2?
asked by Nikki 
PHYSICS
A body accelerates from rest at 0.2m/s for onefifth of a minute.Calculate the distance covered by the body.
asked by EMMANUEL OLA 1 
teacher
is a teacher a basic or a non basic job.. No I don't mean it literally basic or non basic search up the geographical explanation of it
asked by Geo 
math
What is the least common multiple of 864,624 and 819. Can you please show the steps. I know that they are both divisible by 3 but can't find the next lowest prime number to divide them by?
asked by Kelley 
History
Can someone explain what 'Bleeding Kansas' was? I am doing a project, but can't seem to understand. I do know it was a violent outbreak in Kansas during the KansasNebraska act, but what was the cause?
asked by Wishwash 
Physics
The molecular bonds of diatomic molecules can be modeled as springs. The spring constant, k, for a HCl molecule is known to be 480 N/m. If the reduced mass of the molecule is 1.626×1027 kg, what is the frequency at which the atoms in this molecule
asked by Brad 
Algebra 2
The graph (x + 4)^2  (y  8)^2 = 39 is the graph of a(an) _______. Eclipse or hyperbola?
asked by Nikki 
eNGLISH
HELPREWORD!!! OF DOES IT SOUND CLEAR? Although I am not part of the LGBTQ community, as an outsider, I personally know someone that this bill would relate to. People not in the LGTQQ community may not understand the political forces that impact people in
asked by BOB 
History
Can someone link some websites that explains why the Presidential election of 1848 was significant to the Civil War?
asked by Wishwash 
Check Please !!! Rewritten
I am an aspiring human rights advocate attending the University of Baltimore. I am an individual with many social and political concerns. I am invested in this because I believe…that regardless of individual’s sexual multiplicities and social
asked by BOB 
Math
Is the magnitude of an earthquake related to depth below the surface at which the quake occurs? Magnitude: 2.9,4.2,3.3,4.5,1.6,3.2,3.4,3.9 Depth:5.0,10.0,11.2,10.0,7.9,3.9,5.5,8.1 Equation: y=4.12+1.06x Question: does it make sense to predict the depth
asked by Niki 
physics
A 1000 kg car traveling is at 40.0 m/ s. To avoid hitting a second car the driver slams on his brakes. The brakes provide a constant friction force of 8000 N. ( a) Find the minimum distance that the brakes should be applied in order to avoid a collision
asked by bob 
English
Compose a sentence that contains a minimum of twentyone words and a maximum of thirty words.The required main verb of the sentence must be the present progressive verb are planning.You must include the following phrase as a part of the subject:the Puerto
asked by Nabela 
English
1. Is it OK to tell a lie to make a person happy?  In this sentence, what is 'a person'? 1. one person 2. a certain person 3. any person
asked by rfvv 
English
The oppoiste of lucky is unlucky. 1. What is the opposite of luck? Is it unluck or bad/ill luck? Don't you use 'unluck'? 2. What about luck or luckiliss? Are both okay?
asked by rfvv 
physics
A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m. How much work does the tension in the string
asked by jim 
Physics 1
A 1400 kg car traveling at a speed of 34 m/s skids to a halt on wet concrete where μk = 0.50. How long are the skid marks?
asked by Logan 
English
1. He lay on the floor. 2. He was lying on the floor. [Are both okay? Which one is commonly used?] 3. He laid the box on the table. 4. He put the box on the table. [Are both the same?] 5. He lied to her. 6. He told a lie to her. [Ar both grammatical?]
asked by rfvv 
Math
The equation 24x^2+25x47/ax2= −8x−3− 53/ax2 is true for all values of x ≠ 2/a, where a is constant. What is the value of a ?
asked by dam 
Math (Area formed by 3D coordinates)
Compute the area of the parallelogram formed by A(2, 1, 4), B(0, 2, 3) C(1, 6, 5), and D(1, 3, 4). So for this problem, do I turn the four points into two vectors with AD and BC and then take the cross product and then find the magnitude? Taking the
asked by Ray 
English
1. At that moment, he stopped walking. 2. At that moment, he stopped to walk. 3. At that moment, he stopped working to walk.  Does #2 mean #3?
asked by rfvv 
Algebra I
you use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0,993. How confident can you be that your predicted value will be reasonably close to the actual value? a. I can't
asked by SAM 
Math (Slope and Concavity of vector)
I am given a vector function (in other words) : (2cos(t) + cos(2t))i + (2sin(t) + sin(2t)j + 0k Compute the slope dy/dx and concavity d^2x/(dx^2) at t = pi/3. I understand that finding the slope of a vector is possible by using dy/dx such that
asked by Ray 
Trigonometry
Solution set of sin 2x = 1/2 in [0,2pi)
asked by Name 
Algebra 2
Can someone check my answers? 1. Convert 13pi/30 to degree measure. 78° 2. Find the distance between (4,4) and (8,7). 5 3. What is the vertex of the parabola y = (x + 8)^2  2? (8,2) 4. The graph of y = 6(x  8)^2 + 1 open downward. False. 5. An angle
asked by Nikki 
Algebra I
Average height of a species of tree (in feet) after a certain number of years YearsHeight 1  2.1 2  3.2 3  6.8 4  7.3 5  11.2 6  12.6 7  13.4 8
asked by SAM 
Math
What is 2/10+13/100=
asked by Anonymous 
Math
2/10+13/100
asked by Bill 
Chemistry
A 0.8870g mixture of sodium chloride and potassium chloride is dissolved in water and silver nitrate is added. The AgCl that precipitates has a mass of 1.913 g. Calculate the percent by mass of potassium in the initial mixture。
asked by Ethan 
Math
Every exponential function is strictly increasing. True or false? Explain
asked by Anonymous 
Chemistry
Hello this is my first experiment I've ever done before and it was fun but I gotta figure out what NaCl produced and what it yielded in percentage. Can someone double check my work. Na2CO3+2HCl=2NaCl+H2O+CO2 Mass of empty crucible & cover: 33.076g Mass of
asked by Henry 
Math
Find the retail price of this item below Original Price: $65.00; Markdown: 12% How do u do this?
asked by Don't skip meee 
Algebra HELP
How are the median and upper and lower quartiles the same? How are they different?
asked by Hannah 
Algebra HELP
What does the interquartile range tell you?
asked by Hannah 
math
√ x+10 +√ x17=9
asked by felixa 
Chemistry
If one 5 mL dose of Milk of Magnesia contains 400 mg of magnesium hydroxide, calculate the concentration of magnesium hydroxide in mol/L.
asked by David 
Algebra Help!!
Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?
asked by Hannah 
Science 9
The energy each organism obtains from another organism? Food or is it chemical energy
asked by Julissa 
Math
The average height and weight of women varies around the world, but in the United States in 2010, the average adult female height was 63.8 inches (approximately 5 feet 4 inches) and 166.2 pounds, according to the Centers for Disease Control and Prevention.
asked by Olivia 
Physics
A stubborn 110 kg pig sits down and refuses to move. To drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 N. The coefficients of friction between the pig and the ground are μs=0.80 and
asked by Jakob 
Chemistry
How many stereoisomers does [Pt Br4 Cl2]2 have? I think it has 2 geo., but how many optical?
asked by Anna 
social studies
Which of the following laws would the freesoil party have supported? cottonocracy slave codes wilmot proviso fugitive slave act ms sue i don't want a link
asked by shadow 
Algebra
The pair of points (6, y) and (10, 1) lie on a line with slope 1/4. What is the value of y? A. 5 B. 2 C. 2 D. 5 I think its C but Im not sure, help?
asked by Izzy 
algebra can anyone help?
NO ANSWER CHOICES! HELP! Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?
asked by Hannah 
Discrete Mathematics
Students at Apollo Elementary School receive ribbons at the end of each year at a schoolwide awards ceremony. This year 120 students receive gold stars for perfect attendance, 180 receive certificates for participating in the science fair, and 80 students
asked by Paul Johnson 
English
1. I was puzzled what to do. 2. I was puzzle what I should do. 3. I was puzzled about what to do. 4. I was puzzle about what I should do.  Which ones are grammatical?
asked by rfvv 
Chem Bob Pursley Please Help!
So I would like to check some of my answers. I really appreciate any help 1. Which of the following atoms or ions is diamagnetic; Cr Br Mn2+ B C4+  I said C4+ 2. Which of the following atoms or ions is paramagnetic? C4 S^4+ V^4+ Se2 Ge4+I said V^4+
asked by Josh 
Chem
i need a bit of help finding out how to do this problem. just tell me how and ill take it from there. Q.A compound containing carbon, hydrogen, and Oxygen is found to be 40% carbon and 6.7% hydrogen by mass. the molar mass of this compound is between 115 g
asked by ricky bobby martin 
Algebra II
Factor the polynomial X^3 + 8
asked by Logan 
English
1. I was confused by what to do. 2. I was confused at what to do. 3. I was confused over what to do. 4. I was confused about what to do. 5. I was confused what to do. 6. I was puzzled by what to do. 7. I was puzzled at what to do. 8. I was puzzled over
asked by rfvv 
Science
i need a bit of help finding out how to do this problem. just tell me how and ill take it from there. Q.A compound containing carbon, hydrogen, and Oxygen is found to be 40% carbon and 6.7% hydrogen by mass. the molar mass of this compound is between 115 g
asked by Marty Mc Fly 
asu prep
solve simultaneous equation 1/2x+2y=16 2x +1/2y=19
asked by comfort 
French
How would I say "place" in French (like an address)? For example, if I lived on Main Street I would say rue Main. What would you say if you lived somewhere like Forest Place?
asked by cain 
Juvenile Justice
What is the maximum sentence a juvenile court can give to a juvenile?
asked by Anonymous 
Physics
A 4500 kg truck is parked on a 7.0∘ slope. How big is the friction force on the truck?
asked by Elias 
Physics
The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically μr=0.002. Suppose a 180,000 kg locomotive is rolling at 19 m/s on level rails. A) If the engineer disengages the engine, how much time will it take
asked by Elias 
maths
The perimeter os this isosceles trapezium is 92cm find the value of x
asked by kuntal 
Chemistry
How many stereoisomers does [Pt Br4 Cl2]2 have? I think it has 2 geo., but how many optical?
asked by Alex 
geometry
For which value of x is triangle RST congruent to triangle UVW?
asked by vava