Questions Asked on
August 8, 2013

physics
a pulley of 5cm radius on a motor is turning at 30 rev/s and slows down uniformly to 20 rev/s in 2s. calculate the angular acceleration of the motor number of revolution it makes in this time and lenght of belt it winds in this time

math help
The total saving in purchasing 30 13cent lollipops for a class party at a reduced rate of $1.38 per dozen is: (A) $0.35 (B) $0.38 (C) $0.40 (D) $0.45 (E) $0.50 (F) $0.55 not just answer

maths
The coefficient of x^2 is 69 in the expansion of (1ax)^24, where a>0. Find the coefficient of x^3.

Math
Six nickels is what percent of a dollar?

Finance
Determine the annual net cost of this checking account? Annual interest of 2.5% paid if balance exceeds $750, $8 monthly fee if account falls below minimum balance, average balance $815, account falls below $750 during 4 months. Is my answer correct? 815 *

Psychology HELP!!!!
Unlike psychodynamic approaches to personality, the learning approach emphasizes: A. latent personality structures. B. selfactualization processes. C. the outer person. D. biological traits B

Calculus
Find the point on the line 3x+5y5=0 which is closest to the point (4,0). Please Help!

math
Find a pair of integers with a product of 84 and a sum of 5?

math
A farmer has 3 times as many horses as cows. if there are 34 more horses than cows, how many of each does he have?

Psychology HELP!!!!
The Minnesota Multiphasic Personality Inventory2 (MMPI2) is a test used primarily to measure: A. psychological disorders. B. spatial relationships. C. verbal intelligence. D. unconscious motives. A

Psychology HELP!!!!
The salesperson in medication ads dresses to look like a doctor because: A. she has tested the product directly. B. the product was developed by physicians. C. FCC regulations demand this. D. the salesperson’s credibility is enhanced. D

Statistics
A box contains 10 items, of which 3 are defective and 7 are nondefective. Two items are randomly selected, one at a time, with replacement, and x is the number of defective items in the sample. To look up the probability of a defective item being drawn

math help
In an audience of adults and children, 1/6 of the audience are young boys and 1/3 are young girls. What percentage of the audience are children ? (A) 66 2/3 (B) 50 (C) 40 (D) 37 1/2 (E) 33 1/3 not just answer

Physics
A bullet of mass 25kg strikes horizontally an immovable block of wood with a velocity of 250m/s and penetrates it a distance of 1m. Calculate the resistance of the wood on the bullet , assuming the resistance to be uniform. How far would the bullet have

Psychology HELP!!!!
Trish is overweight. When you meet her for the first time, you feel contemptuous. This is an example of: A. stereotyping. B. ethnocentrism. C. discrimination. D. prejudice. A

Math
2/7 + 4/7 = 6/7 Am I right or wrong.

math help
A Certain type of board is sold only in length of multiples of 2 feet from 6 ft to 24 ft. A builder needs a large quantity of this type of board in 5 1/2 foot lengths for minimum waste. The lengths in feet to be ordered should be (A) 6 (B) 12 (C) 16 (D) 18

Psychology HELP!!!!
Shelby is a very outgoing person who likes being around other people and socializing with them. According to the Big Five trait theory of personality, Shelby would be considered to be: A. showing signs of her masculine archetypes in her collective

Psychology
Observing what a person does under carefully controlled circumstances is a main feature of: A. the Thematic Apperception Test. B. behavioral assessment. C. Rorschach methods. D. the MMPI2. C

Psychology
"The origin of the abnormal behavior is not my concern. We will attack the behavior as it stands and work together to change it, thereby reducing the anxiety you are experiencing." This statement would be typical of the: A. medical perspective. B.

algebra
a store buys jeans for $24 each and marks them up 30%. what is the selling price of a pair of jeans?

Physics
Charge A has a charge of +2C. Charge B has a charge of 3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of Charge B and has a charge of 1C. If a fourth charge (Charge D) is placed 4 meters to the right of Charge B,

Algebra
A box contains 4 quaters, 3 dimes, and 2 nickels. you draw out two coins and keep them both. What is the probability that both are quaters?

microeconomics
The basis of the argument favoring government intervention to correct informational and rationality problems is that:

grammar
In Which oneof the following sentences is the number written correctly? A.the parcel of land was advertised as two hundred fortythree and threequarters acres.b.the college has an,endowment of more than $187million.c.john just paid $33 thousand forhis New

Geometry
If the distance from the top of a building to the tip of its shadow is 150 feet and the sun makes a 75 degree angle with the wall as shown in the image below, what is the length of the shadow?

physics
a car has wheel of 30cm radius. it starts from rest and accelerates uniformly to a speed of 15 m/s in a time of 8s. find the angular acceleration of its wheels and the number of rotations one makes in this time.

math help
If m/n = 5/6, then what is 3m + 2n ? (A) 0 (B) 2 (C) 7 (D) 10 (E) it cannot be determined from the information given not just answer

math
A diagram shows a straight line graph of In y against x,passing through the point (0,2) and having gradient 3/2 . The variables x and y are connected by the equation y=pq^x ,where p and q are constants Find (i)the value of p and of q ,to one decimal place

Math
The variables x and y are related by the equation y=ax/(xb),where a and b are constants .When y is plotted against y/x ,a straight line is obtained .The line has gradient 3 and yintercept 2. (i)Find the values of a and b (ii)Find the values of x which

math
Find a pair of integers with a product of 84 and a sum of 5?

math
Find a pair of integers with a product of 84 and a sum of 5?

bio152
the logistic population growth model, rN[(KN)/K], describes a population's growth when an upper limit to growth is assumed. As N approaches (numerically) the value of K, additions to the population

Physics
A crate with a total mass of 18.0 kg is pulled by a person along the floor at a constant speed by a rope. The rope is inclined at 20 degree above the horizontal, and the crate moves 20.0 m on a horizontal surface. The coefficient of kinetic friction

Math
Solve the simultaneous equations in Z24, 3x+4y=18 12x+7y=4 Thanks!

math
A farmer has 3 times as many horses as cows. if there are 34 more horses than cows, how many of each does he have?

Science
I don't know the formula for calculating the magnitude of the momentum of the earth in its journey around the sun. The mass is 6x10^24kg and its radius of orbit is 1.5x10^11m.

Finance
What type of cost measurements best fit in healthcare and which do not? How do cost measurement techniques vary with regard to the operating budget, capital budget, and variance analysis?

Finance
Is a proactive application of cost measurement and corrective actions a realistic approach to minimize variance? Please justify the answer with examples.

math (please help!)
A crippled rook can move on a chessboard in the following way: from a square, it can move to an adjacent square sharing a common side, and every two consecutive moves must be at right angles (i.e., the rook makes a 90∘ turn at every move). A cycle is a

science
a ball is dropped from the roof of a building. it takes 10 seconds to reach the ground. find the height of the building.(g=9.8/s square)

maths
Find the expansions of (1x)^6 and (1+2x)^6 as far as the terms in x^3. Hence expand (1+x2x^2)^6 up to the terms in x^3.

chemistry
This balance equation shows the burning of octane in air. 2C8H18 + 25O2 > 16CO2 + 18H2O. How many grams of carbondioxide will be produced when 1 mole of octane burns completely?

maths
Find the ratio of the coefficients of the 4th and 6th terms in the expansion of (1 + 2x)^16

Psychology HELP!!!!
To compare one person’s test scores to the scores of all other people who took the test, psychologists must know something about the test’s: A. projective nature. B. subjective nature. C. length. D. norms. A

Psychology HELP!!!!
Survey research has revealed that one of the most important qualities that people look for in friends is: A. attractiveness. B. loyalty. C. independence. D. intelligence. B

Math
A man bought a house for 76,000. he made a down payment of 26,000 and agreed to pay 2,500 each year with a interest of 14% on an unpaid balance. His payment at the end of the second year was?

science
whether a stone thrown upword with very high speed fall to the same point to the ground? If yes then why even the earth is in motion?

Economics
Sometimes, a bidder on a work contract may bid lower than what would maximize his/her profit from the contract and the reason for that is to create goodwill (to increase expected future business from the buyer). How would you value the goodwill that is

English
I need help with this please. Write two compositions. To help you get started, you can choose to write about any two of the following four topics: a job report your most unforgettable character an analysis of the causes for some phenomenon or event the

putting it all together
the term dyad relates to a ? a.split personality b.twoperson relationship c.love/hate relationship d.multiple personalities my answer is b

putting it all together
which one of the following substates is considered to be the manipulative aspect of the persona? a.the natural child b.the little professor c.the adapted child d.the complying child my answer is b

putting it all together
a component not considered a part of a persons selfesteem is? a.social nonacceptance b.personal competence c.power d.virtue my answer is a

putting it all together
a persons selfesteem is often? a.based on a biological characteristic b.unlearned c.positive only d.made up of attributes admired in others my answer is d

putting it all together
a childs selfesteem? a.must come from within the child itself b.is essentially an objective experience c.can be impressed on a child by parents d.is the collective judgement of worthiness my answer is a

putting it all together
when someone comes onto you like a parent,which state becomes activated? a.the child state b.the ego state c.the parent state d.the adult state my answer is a

putting it all together
which part of our personality reflects social conditioning and influence? a.the adapted child b.the little professor c.the natural child d.the id my answer is a

maths
Find the indicated term for (12x)^10, middle term.

maths
Find the course and ground speed if Track 150 degree, airspeed 400km/h; wind 040degree, 30km/h.

maths
Find the wind velocity if course 060 degree, airspeed 250km/h; track 040 degree, ground speed 260km/h.

MaTh
A square game board measures 16 inches on each side. The game board is divided into smaller squares measuring 2 inches on a side. How many small squares are there on the game board? My answer is 16x16 = 256 x 2=512, then I 16/2 = 8 and 512/8 = 64. Is this

math
65=A; 70=f; 75=k; 80=p; 85=u 90=z 66=B; 71=g; 76=l; 81=q; 86=v; 67=c; 72=h; 77=m; 82=r; 87=w; 68=d; 73=i; 78=n; 83=s; 88=x; 69=e; 74=j; 79=o; 84=t; 89=y 9565=25; so how can be 26 values from 65 to 95;

Maths
Jessica needs to construct a rectangular outdoor dog pen. The pen must have 4 sides. I need to draw 6 different shaped rectangular pens, seen from the top, using 24m of fencing.

math
6b3 / 3b^212

Math
k^2k20 / 18

physics
Charge A has a charge of +2C. Charge B has a charge of 3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of Charge B and has a charge of 1C. If a fourth charge (Charge D) is placed 4 meters to the right of Charge B,

Psychology
"Honey, you know how we have always wanted to be in business for ourselves? Well, today I did it! I have rented a 3000 square foot business, hired six employees, ordered office furniture; we are in business." During the first three weeks, Todd was

Psychology
According to behavioral treatment approaches, abnormal behavior is learned through: A. thoughts based on the perception of events. B. vicarious experiences. C. rewards and punishments. D. conflict experiences in early childhood. A

Psychology
A remarkable change occurred in mental institutions during the late 1950s. Patients became less agitated and many became "out patients" rather than custodial patents. These noticeable changes were the results of: A. antidepressants. B. shock therapy. C.

Psychology
Electroconvulsive therapy may produce immediate relief from depression, but: A. may result in schizophrenia. B. can also change the hemisphericity of the brain. C. is not a longterm improvement. D. should not be used more than once. B

Psychology
The goal of psychodynamic therapy is to: A. change thought processes from negative and dysfunctional to positive and constructive. B. elevate unresolved conflicts and primitive impulses to conscious awareness effective for change. C. prepare the patient

ADVANCED AMC8 GEOMETRY QUESTION/MATH
An equilateral triangle of side 14 centimeters is revolved about an altitude to form a cone. What is the number of cubic centimeters in the volume of the cone? Express your answer to the nearest whole number, without units. I really need help on this. I

chemistry
Two containers of equal volume are separated by a membrane that allows free passage of water but completely restricts passae of solute molecules. Into which compartment will water flow, or will there be no net movement of water? Which solution is at the

chemistry
Two containers of equal volume are separated by a membrane that allows free passage of water but completely restricts passae of solute molecules. Into which compartment will water flow, or will there be no net movement of water? Which solution is at the

***CHEMISTRY HELPPPP!!!!
(b) The density of platinum is 23.4 g/cm3 at 20°C. Calculate the mass of 77.0 cm3 of platinum at this temperature. (c) The density of magnesium is 1.74 g/cm3 at 20°C. What is the volume of 275 g of this metal at this temperature? *what I am stuck on the

chemistry
A mixture was formed by adding 4.56g of KCL to water to make 175mL of solution. The density if the solution is 1.12g/mL. Whatis the mass percent and what is the molarity of the potassium chloride solution?

chemistry
How would you prepare 500mL of 6.0M NaOH solution using solid NaOH pallets?

statistics
A study of hours devoted to a graduate course outside of classroom time generates a mean score of 90 with a standard deviation of 20. The mean age of the students was 31 with a standard deviation of 5 years. What is the relative dispersion of the two data

Writing
Prompt: " A man walking down a crowded street noticed a dog lying by the side of the road that looked like it might be injured; but since everyone else just passed by, the man was satisfied to assume that the dog was fine. The next day he learned that the

Discrete Mathematics
3.Does it matter if we join two vertices with a straight line or a curved line when we represent a graph by drawing it on paper?

Discrete Mathematics
If we consider the G as the whole of the cycle graph having 4 edges then is G a complete graph?

math
what is the answer to 7 8/152 2/6

Calc Help Please
A fence 2 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building? Help!

Calc Help Please
The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 416 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 8 dollar increase in rent.

Calc Help Please
A rectangle is inscribed with its base on the xaxis and its upper corners on the parabola f(x)=8x^2. What are the dimensions of such a rectangle with the greatest possible area?

Math
If m

algrbra
19 in oreder insert oprestion sight and grouping symbol to get a value of 100

p chem
1/2 mole CCl4 @ 25 C was mixed with 1/2 mole CH2Cl2 @ 25C. The final T was 27 C. Calculate delta S mixing, delta S for CCl4 on heating, delta S for CH2Cl2 on heating, and delta S system. Assume 131.8 J/K for Cp for CCl4 and 100.0 J/K for Cp for CH2Cl2.

Calc
The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 416 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 8 dollar increase in rent.

Math
1/2 + ? = 11/12 What does ? equal

Geometry
Two marbles are sitting side by side in a glass container.b the base of the container is 10 units long and the radius of the smaller marble is 2 units. What is the radius of the larger marble? Describe the strategy used to answer the question.

algebra
At 3:00 pm the temperature was 2* below zero. It then fell 4* in the next 2 hours. what was the temperature at 5:00pm?

English
Who/Whom? A person, who/whom I respect, lives across the street.