Wednesday
September 28, 2016

Posts by John

Total # Posts: 7,987

physics
a block of mass M = 9.9 kg rests on a bracket of mass m = 5.5 kg. the bracket sits on a frictionless surface. the coefficients of friction between the block and the bracket on which it rests are .4 and .3. what is the maximum force that can be applied if the block is not to ...
November 2, 2015

science
Ana exerts a force of 20 N on a volleyball that has a mass of 0.15 kg. What is the force that the volleyball exerts on Ana?
November 2, 2015

biology
Determine the effective population size of the current population located on an island. You conduct a census and determine there are about 1500. -Your initial survey indicated that there are 500 juveniles (Smaller, with no horns) on the island. What would you consider the ...
October 31, 2015

Physical science
Mist graph
October 29, 2015

math
Ms.Sue can you help me
October 28, 2015

math
@Ms.Sue
October 28, 2015

math
what is 10 5/18 - 8 5/6 A. 2 5/9 B. 2 13/18 C.1 4/9 d. 1 11/18 I think It is B?
October 28, 2015

Physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 69.3-kg man just before contact with the ground has a speed of 6.94 m/s. (a) In a stiff-legged ...
October 28, 2015

maths
Fence post are placed 3m apart from each other. How many posts will be placed over a distance of 45m?
October 27, 2015

business statitics
a) The mean lifetime of a sample of 100 light tubes produced by a company is found to be 1570 hours with standard deviation of 80 hours. Test the hypothesis that the mean lifetime of the tubes produced by the company is 1600 hrs. (7 marks)
October 27, 2015

math
Find the values of the trigonometric function cot -8/17 sin: sec: tan: cot: I know you use a Pythagorean Identity, sin^2t + cos^2t=1 I got 64/289 for the first one for example and it was wrong.
October 26, 2015

Calculus
A force of 6 pounds is required to hold a spring stretched 0.2 feet beyond its natural length. How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.6 feet beyond its natural length? could you please explain how. thanks
October 26, 2015

chem - help!
Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money? Write a balanced chemical equation along with your answer. a) Rolaids (550 mg CaCO3 and 110 mg Mg(OH) per tablet) - 150 tablets for $9.44 b) ...
October 26, 2015

vectors linear algebra
The parametric equations for a line L1 are as follows: x = −4−6t y = 2+2t z = 1−4t Let L2 be the line parallel to L1 and passing through the point (−3, −3, −3). Find the point P on L2 whose x-coordinate is −12. P=P(-12, _ , _ ) ?
October 26, 2015

math
find the sum of the sequence 41+42+43+44+117
October 25, 2015

chem
Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money? Write a balanced chemical equation along with your answer. a) Rolaids (550 mg CaCO3 and 110 mg Mg(OH) per tablet) - 150 tablets for $9.44 b) ...
October 25, 2015

physics
17 23
October 25, 2015

biology
Which of the following statements best explains the relationship between the mitochondria and the plasma membrane? A. The mitochondria makes proteins that become a part of the plasma membrane. B. The mitochondria makes a gas that the plasma membrane uses. C. The mitochondria ...
October 25, 2015

science
im confused are these answers incorrect ?
October 25, 2015

math
1)11.7 so do you round up or no ? either its 11 or 12 2)87.50 ? 3)A
October 25, 2015

math
6.85 ?
October 25, 2015

math
Suppose f(t) is the weight (in grams) of a solid sitting in a beaker of water and the solid is dissolving at a rate (in grams/minute) of f'(t)=-4 f(t)(3 + f(t) ). If there is 4 grams of solid at time t=2 minutes, use a linear approximation to estimate the solid's ...
October 24, 2015

math
Suppose f(t) is the weight (in grams) of a solid sitting in a beaker of water and the solid is dissolving at a rate (in grams/minute) of f'(t) =-4 f(t)(3 + f(t) ). If there is 4 grams of solid at time t=2 minutes, use a linear approximation to estimate the solid's ...
October 24, 2015

math
Suppose N(t) denotes a population size at time t where the dN/dt=0.03 N(t). If the population size at time t=4 is equal to 100, use a linear approximation to estimate the size of the population at time t=4.1.
October 24, 2015

math
A cup of coffee at 173 degrees is poured into a mug and left in a room at 72 degrees. After 6 minutes, the coffee is 137 degrees. Assuming that Newton's Law of Cooling applies: After how many minutes will the coffee be 100 degrees?
October 24, 2015

math
Suppose f(x)=ln x. (a) Find the linear approximation of f at a=1. L(x)= (b) Use the linear approximation to estimate ln 1.27. ln1.27=
October 24, 2015

Chemistry
Do positive ions or the negative ions cause the change in flame color ? Explain why and give on example.
October 23, 2015

Reading: Paricia A. Ackerman
Gudnite!
October 23, 2015

Reading: Paricia A. Ackerman
Dinner Together : Sitting by the barbecue waiting for sausages and hot dogs blue-gray smoke the same color of the sky I see a tiny spider walking down from the sky with tiny six footed steps down down in a perfectly straight line all the way down to the floor then back up the ...
October 23, 2015

Reading: By Houghton Mifflin
On page 241 Focus on Poetry Animals Dinner Together: sitting by the barbecue waiting for sausages and hot dogs blue-gray smoke the same color of the sky I see a tiny spider walking down the sky with tiny six footed steps down down in a perfectly straight line all the way down ...
October 23, 2015

Reading
Poetry animals dinner together. What is all about? Page 241
October 23, 2015

math
john has 24 baseball cards. chard has 13 more cards than john. draw a comparison problem to illustrate how to solve the problem, then slove
October 20, 2015

Math
3x+3(x-1)<-18
October 20, 2015

Marh
The nearest sq mile would be a whole number, so round to the nearest whole number. (the place for the decimal). I am assuming the value you stated is in square miles.
October 20, 2015

Math
When the problem says "about" it sounds like they are looking for an estimate. A good estimate would be to multiply 6 times 700 to get 4200.
October 20, 2015

Math
Could the 1.5 miles take him farther because it said across and not around the loop? There might be another 1.5 to add to the total. Not sure...
October 20, 2015

maths
In general, distance = rate x time This case: distance = (rate + current) x time distance = (rate - current) x time 100 = (50 -c)(t) 100 = (50+c) (t + 3 3/4 minutes) This should get you started.
October 20, 2015

physcial science
B moving electric charges cause a magnetic field to form.
October 20, 2015

Math
multiply the 7.5 times 3 to give you 22.5 times 10^-5 To get to standard notation you need to write the 22.5 as 2.25 x 10^1 combine the 1 + -5 to get -4 because we have the same base of 10. When multiplying, you keep the base and add the exponents. 2.25 x 10^-4
October 19, 2015

physics
32 m/sec will be decreased at for 3.0 sec. 32-12 = 20 m/s 4.0 m/sec times 5.25 sec. = 21 m/sec 1m/sec faster. b) d= rt You could use the average rate by computing the beginning and ending speeds
October 19, 2015

Geometry
yes!
October 19, 2015

math Help Azap!!!
To solve for a, we first have to remove the ( ) 9a -3a +18 = -6 6a + 18 = -6 Can you finish from here? Be sure to check your answer in the original equation.
October 19, 2015

Algebra
1) 7(3) = -56(33y) 7(3)/ (-56)(33) = y 2) (8)(44) = (29)(11k) (8)(44)/(29)(11) = k Can you finish from here? You can make the math a little simpler by cancelling.
October 19, 2015

Math
divide both sides by -4 which causes you to flip the sign...you have the sign correct, but it should be a 3 The first choice. Every set is a subset of itself, so it should be the last choice.
October 19, 2015

algebra
It looks like k = -2 because 3x times -2 = -6x and -2 times -2 = 4
October 19, 2015

English
What literary device is being used in this passage? "'See!' he cried triumphantly. 'It's a bona-fide piece of printed matter. It fooled me. This fella's a regular Belasco. It's a triumph. What thoroughness! What realism! Knew when to stop, too--...
October 18, 2015

Adamson University Math
Klasmeyt may sagot ka na dyan? naghahanap din po ako eh.. need help po :)
October 15, 2015

geomtry
two angles form a linear pair the measure of one angle is 24 more than the measure of the the other anglr
October 15, 2015

Math
A lock has 3 tumblers each has 10 numbers from one thru zero, how many possibilities to open lock and what are the numbers ?
October 14, 2015

Math
Typo 1/12
October 14, 2015

Math
12 marbles total 3/12 times 3/12 if you are replacing it. 1/4 times 1/4 = 1/16 There are 6 possible outcomes. 1/6 to roll a three and 3/6 to roll an even number. For both to happen you have 1/6 times 1/2
October 14, 2015

algebra
2x + 3y = 1470 Slope intercept form is y = mx+b So you want to solve for y: subtract 2x from both sides and divide by 3. 3y = -2x +1470 y = -2/3 x + 1470/3 or y = -2/3x +490 To graph you would start at the point (0,490) and to find the next point you would use -2/3 = change in...
October 14, 2015

Physics
A golf ball strikes a hard, smooth floor at an angle of 20.7 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0528 kg, and its speed is 40.2 m/s just before and after striking the floor. What is the magnitude of the impulse applied to the ...
October 14, 2015

Math
It is -9 sorry about the typo.. I am glad Ms. Sue caught that.
October 12, 2015

Math
Simplify like terms which means to combine the 10h -5h which is 5h 9 + 5h = 0 subtract 9 from both sides 5h = 9 Divide by 5 to get h = 9/5
October 12, 2015

Math
16) Change the fractions to decimals to compare with the other two decimals. Check that, but I believe it is Garret. 17) I am not agreeing with your answer. Put the digits in the last place and do the division. The one that has no remainder is the answer. 18) You have to do ...
October 12, 2015

Math
1)18/34 isn't > 16/32 think about 16/32 = 1/2 and you would ned 18/36 to = 1/2 so you would need something like 19/36 yo be larger. I think you should check the 4th one. Remember > is greater than and < is less than (it sort of looks like an l) 3) I agree with ...
October 12, 2015

Math
Here is a nice website that shows steps that you asked for in #4 - I am not allowed to post it. Do a google search of solving linear equations and look for one related to NYS regents. If you can solve for the variable, the equation is open. If you eliminate all of the ...
October 12, 2015

Math
projectile hits the ground when s(t) = 0 meaning the height off the ground is zero. 0 = 144t -16 t^2 Factor out the t: 0 = t(144 -16t) set each part = to zero t = 0 the projectile wasn't launched yet and 144- 16t = 0 solve for t to find out how long the projectile was in ...
October 12, 2015

physics
A 56-kg rollerblader skates across a skating rink floor. The graph below shows the net external force component F cos è along the displacement as a function of the magnitude of the displacement d. Determine the Following: (a) work done by the net force component F cos &...
October 12, 2015

statistics
17 balls total There are 10 red 10/17 is your chance.
October 12, 2015

math
For #4, you are subtracting 1 from each part and not adding it. subtracting 1 gives you 2x = 10 and 2x = -12 You had the right idea, but the adding 1 is wrong, you really subtracted 1. Teacher was probably looking for you to show the adding 8 and dividing by 4 and for the ...
October 12, 2015

Math
When you solve the equations, you will find that when the letters (variables) are eliminated you will be left with a number on each side of the equal sign. If they numbers are the same, you have and identity. If not, it is not an identity.
October 12, 2015

Georgia History
am I right Ms.Sue
October 10, 2015

Georgia History
I think it is A,B,C
October 10, 2015

Georgia History
well I have 1,2,3 but I do not know 4 choose all that apply georgians were unaffected by the proclamation because they had no claim to forbidden lands. colonists were angry that the crown was protecting the americans indians, whom they had just fought in the french and indian ...
October 10, 2015

Georgia History
which of the following effects of the french and indian war most contributed to smuggling in the colonies? increased taxes from the crown enforcement of the navigation acts presence of british soldiers in the colonies removal of the spanish from flordia which economic system ...
October 10, 2015

Math
thank you
October 10, 2015

Math
the one with ***** that is the one I choice
October 10, 2015

Math
4*8 8^4 8*8 4^8******
October 10, 2015

Math
which expression is equivalent to 4*4*4*4*4*4*4*4
October 10, 2015

Probability
Lidsney inspected shipments of applices. She inspected 3 from a batch of 140 . If she finds 3 with defects the entire lot is rejected. If max knows knows that 9 of her appliances have minor defects. Find the probability that lidya will reject max shipment of appliances.
October 9, 2015

physical science
the answer is A.
October 9, 2015

Georgia History
I did but it only talks about the stuff before the royal period
October 8, 2015

Georgia History
Ms. Sue can you help me
October 8, 2015

Georgia History
I have already read theses I just need like to sentences of what developments that happened after the trustees system failed
October 8, 2015

Georgia History
what happened to Georgia after it became a royal colony? I am having to do a essay so I would like to know what happened.
October 8, 2015

science
Both carbon dioxide and water are pure substances. How are they similar to each other? A. both substances have a set ratio of atoms that cannot be separated by physical means B. both substances have a set ratio of atoms that can be separated by physical means C. both separated...
October 8, 2015

physics help
A block of wood experiences a normal force of 32 N from a rough,flat surface.there is a rope tied to the block.the rope is pulled parallel to the surface and the tension in the rope can be increased to 8 N before the block starts to slide. Determine the coefficient of static ...
October 8, 2015

math
that is correct 3+2 is five times 5 is twenty-five. you got it!!!
October 7, 2015

math
Compare 3+2 times 5 to (3+2) times 5. i put order of operations and got 5 times 5 for the first one, and for the second. I need to now if that is correct and if not what is wrong. thanks, John :)
October 7, 2015

Language arts
A dependent clause is a group of words that also contains a subject and a verb, but it is not a complete thought. Because it is not a complete thought, a dependent clause cannot stand on its own as a sentence; it is dependent on being attached to an independent clause to form ...
October 7, 2015

Science- RE-DO
you cant be on a re do and ask for answers. your teacher needs to know you understand it and you posted what i am almost sure is every question on the homework... :(
October 7, 2015

math
A water tank will be drained at a constant rate of 42.4 liters per hour starting at 9:00 A.M. After one hour, the change in the amount of water in the tank can be represented as –42.4. Which of the following represents the total change in the amount of water in the tank ...
October 7, 2015

algebra 2
Joe will rent a car for the weekend. He can choose one of two plans. The first plan has no initial fee but costs $0.90 per mile driven. The second plan has an initial fee of $65 and costs an additional $0.40 per mile driven. How many miles would Joe need to drive for the two ...
October 6, 2015

chemistery
What is the equilibrium constant for the reaction taking place at room temperature (T = 25◦C) in the battery Zn(s)| Zn2+(aq)|| Ce4+(aq)| Ce3+(aq) ? Assume that the number of electrons transferred in the reaction is n = 2. Zn2+ + 2 e − → Zn E ◦ red = &#...
October 5, 2015

English
your stupid as hell reed its an answer given
October 5, 2015

Chemistry
How many grams of iron at 200.0 c must be placed in 200.0 g of water at 18.0 c so that the temp of both will be 30.0 c ? Okay so the SH of iron = .106 This is what I have set up.. Not sure if I'm going at this the right way.. (.106) (m) (170.0) = (1.0) (200.0) (12.0) I don...
October 4, 2015

English
What is the archetype in By the Waters Of Babylon for The Quest to Know who you are, with an example from the book
October 4, 2015

algebra
Solve y=kx for k
October 3, 2015

Georgia History
thank you
October 1, 2015

Georgia History
which of the following immigrant group came to Georgia unwillingly. A.Quakers B.Scots-Irish C.slaves D.Puritans I think C
October 1, 2015

PROBABILITY PLEASE HELP
A tourist bureau survey showed that 80% of those who seek information about the state actually come to visit. The office received 7 request for information. What is the probability that all will visit? What is the probability that at least one will? I've tried to figure ...
October 1, 2015

physics
A 0.19 kg hockey puck has a velocity of 2.1 m/s toward the east (the +x direction) as it slides over the frictionless surface of an ice hockey rink. What are the (a) magnitude and (b) direction of the constant net force that must act on the puck during a 0.36 s time interval ...
October 1, 2015

Waka sss
The oxidation number of sulphur in CUSO4.5H2O IS
October 1, 2015

science
what is the half-life of the nuclide
September 29, 2015

Chemistry
When 0.100 g of calcium oxide is added to 125 g of water at 23.6°C in a coffee cup calorimeter, this reaction occurs: CaO (s) + H2O(l) -> Ca(OH)2 (aq) ∆H = -81.9kJ/mol If the specific heat capacity of water is 4.184 J g-1 °C-1, what is the final temperature of...
September 29, 2015

algebra
solve the system by substitution x+y=9000 .06x+.15y=1215 .06x+.15(x-9000)=1215 .06x+.15x-1350=1215 .21x-1350=1215 x-1350+1214.79 x+2564.79 don't look right? where did I go wrong
September 27, 2015

Physics
A rifle bullet, traveling at "v1" strikes a large tree an penetrates to a depth of "d". the mass of the bullet is "m". assume the de-acceleration is constant as it penetrates the tree. a) the time required to stop. b) the de-acceleration of the ...
September 27, 2015

physics
if two forces 10N and 20N are inclined at angle 60degree to each other. Find the resultant force.
September 27, 2015

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