Friday

February 12, 2016
Total # Posts: 226

**Physics **

How long does it take an automobile traveling 62.9 km/h to become even with a car that is traveling in another lane at 48.9 km/h if the cars’ front bumpers are initially 130 m apart? Answer in units of s.
*September 14, 2015*

**intermediate algebra**

He purposely made a problem with not enough info.
*May 6, 2015*

**intermediate algebra**

This is word for word what my teacher wrote
*May 6, 2015*

**intermediate algebra **

the radiator in Johns car contains 16 L of antifreeze. How much of this mixture should be drained and replaced with pure antifreeze so there will be a mixture of 50% antifreeze.
*May 6, 2015*

**reading and writing**

d.
*March 22, 2015*

**reading and writing**

In which sentence does the italicized word have a negative connotation? A. Although she had worked hard in high school, Ruth found the college courses challenging. B. Jenna's green eyes and dark eyelashes gave her an exotic look. C. Jack, who is the most outspoken member ...
*March 22, 2015*

**mathematics concepts**

Fraction symbols can usually be safely introduced A. at the beginning of third grade. B. near the end of first grade. C. near the end of third grade. D. at the beginning of second grade. my answer is c.
*February 21, 2015*

**math concept**

Sarah understands that if there are 11 ones, the first 10 move over to the tens column as one unit (i.e., one group of 10). What concept does this understanding represent? A. Renaming B. Regrouping C. Borrowing D. Place value my answer is a
*February 21, 2015*

**mathematics concepts**

Joseph is making different shapes with a rubber band and a geoboard. Which of the following would be a geometric concept that Joseph is informally exploring? A. Estimation B. Patterns C. Volume D. Probability my answer is b.
*February 21, 2015*

**cconcept development**

I took the exam and my answer was correct.
*February 17, 2015*

**cconcept development**

When a teacher chooses learning objectives for a child, which question should be asked? A. What should Kelly learn next? B. Where's Kelly in the learning process? C. Do the plan and materials fit my lesson? D. Has Kelly learned what was taught? a.
*February 17, 2015*

**concept development**

A basic rule in evaluating learning activities is to be sure A. the child has no prior knowledge. B. a variety of science process skills are used. C. the strategies are limited. D. the textbook provides step-by-step photos. my answer is b.
*February 17, 2015*

**concept development**

thanks
*February 17, 2015*

**concept development**

The answer was correct. I had 100 point in my exam.
*February 17, 2015*

**concept development**

I reread the chapter and I find the answer.is d.
*February 17, 2015*

**concept development**

the question is not specific.
*February 17, 2015*

**concept development**

Which of the following process skills is generally more important for use with older children? A. Observing B. Communicating C. Classifying D. Predicting my answer I think is c.
*February 17, 2015*

**Math**

A rectangle wheat field is 10^5 m long as 10^5 m wide. What is the area?
*February 15, 2015*

**Chemistry**

An original samplemof an unknown potassium chloride/potassium cholate mixture weighed 1.042g before heating and 0.943g after heating. How many grams of oxygen were released?
*February 6, 2015*

**chemistry**

I'm sorry the reast says to calculate the van't Hoff factor (i) for MX at this concentration.
*January 30, 2015*

**chemistry**

A 0.97 m aqueous solution of an ionic compound with the formula MX has a freezing point of -2.5 ∘C .
*January 30, 2015*

**English 3**

"When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God...
*November 3, 2014*

**physics**

A marble rolls off the edge of a table that is 0.82 m high. The marble is moving at a speed of 0.11 m/s at the moment that it leaves the edge of the table. How far from the table does the marble land?
*November 2, 2014*

**math**

Explain and show hot to convert 0.765 to fraction
*September 12, 2014*

**math proportions**

What is 1000/x = 25/64
*September 8, 2014*

**math**

There are 40 students. 16 students missed class. What % of students attended class
*September 8, 2014*

**science**

I measure my head fist 28m , 65cm now i'm stuck trying to figure out how to measure my head in mm and km. I need help please.
*September 7, 2014*

**5th grade math**

What is the best estimate for the product of 289 and 7
*August 25, 2014*

**Physics **

How is the Sky Screamer at Six Flags an example of Newton's First Law?
*August 25, 2014*

**psychology**

Why do negative emotions make it hard to learn or work toward a goal?
*August 24, 2014*

**medical coding**

this 32-year old female was burned by hot grease in her kitchen 1 week ago. She is seen in the hospital-based wound clinic for large dressing changes on both upper extremities following second-degree burns to both arms. This is accomplished without requiring anesthesia. I got ...
*August 14, 2014*

**Statistics**

A survey of 1,000 adult Americans included the following question: "If the military draft were reinstated, would you favor or oppose drafting women as well as men?" Forty-three percent responded that they would favor drafting women if the draft were reinstated. Using...
*May 23, 2014*

**math**

Please Help!!!!! If i spent 3 hours in homework and of that time 1/3 on math and 1/5 on science, what method could i use to solve this problem????????? Please Help Thanks!!!!
*April 24, 2014*

**World History**

1. Greek and Roman legacies to the world include contributions to modern law and government. Describe how modern law and government have been influenced by classical Greece and Rome. Include at least two examples from the Greeks and two examples from the Romans.
*April 23, 2014*

**Math**

A motorist traveling 55 mph is being pursued by a highway patrol car traveling 65 mph. If the patrol car is four miles behind the motorist, how long will it take the patrol car to overtake the motorist?
*November 5, 2013*

**Chemistry - Please Help!**

XeO3 + I- ----> Xe + I2 (acidic solution) CN)2 -----> CN- + OCN- (basic solution) MnO2 + SO32- ---> Mn2+ + S2O62- (acidic solution) H2SeO3 + H2S -----> S + Se (acidic solution) Cl2 ---> Cl- + ClO3- (basic solution) ClNO2 -----> NO3- + Cl- (acidic solution)
*October 27, 2013*

**Chemistry**

Balance the following equation for a basic solution. MnO4-+C2O4-2= Mno2 + CO3-2
*October 27, 2013*

**math**

Kittens weigh about 100 grams when born and gain 7 to 15 grams per day. If a kitten weighed 100 grams at birth and gained 8 grams per day, in how many days will the kitten triple its weight?
*October 23, 2013*

**chemistry**

J. J. Berzelius collected the following data for three reactions: Reaction 1 – 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur Reaction 2 – 11.56 grams of lead sulfide were formed when 10.0 grams of lead reacted...
*October 9, 2013*

**chemistry**

thank you!
*October 9, 2013*

**chemistry**

When cane sugar reacts with oxygen in living systems, carbon dioxide and water are produced. What weight of carbon dioxide can be produced from the reaction of 15.0 grams of cane sugar with 15.0 grams of oxygen? (Hint: balance the equation) ___C12H22O11(s) + ___O2(g) ...
*October 9, 2013*

**chemistry**

thank you!
*October 9, 2013*

**chemistry**

how many H2O molecules can be formed from 200 H2 molecules and 200 O2 molecules?
*October 9, 2013*

**chemistry**

Manganese(III) fluoride, MnF3, can be prepared by the following reaction: 2MnI2(s) + 13F2(g) → 2MnF3(s) + 4IF5(l) If the percentage yield of MnF3 is always approximately 51%, how many grams of MnF3 can be expected if 40.0 grams of each reactant is used in an experiment?
*October 6, 2013*

**Chemistry**

thanks!
*October 6, 2013*

**Chemistry**

Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg of steam are ...
*October 6, 2013*

**Physical Chemistry**

Thanks!!
*September 22, 2013*

**Physical Chemistry**

Integrate the expression β = 1/V (δV / δT) at constant pressure, assuming that β is independent of temperature. By doing so, obtain an expression for V as a function of T and β at constant P.
*September 22, 2013*

**Chemistry**

Calculate the enthalpy change when 45 g of ice at -40.0 oC is heated to completely melt to liquid water at 0.0oC. (The heat of fusion for water is 333 J/g.)
*April 5, 2013*

**math**

Write a recursive formula for the sequence: 12,-1,-14,-27...
*February 12, 2013*

**physics**

The coefficients of friction between a 250 lb football sled and the grass are Mu(s)=0.6 and Mu(k)=0.4. For grass and cleats, Mu(s)=0.9. One 280 lb tryout exerts a horizontal push of 140 lb on the sled. What is the acceleration of the sled?
*February 3, 2013*

**Vista High school **

solve the following inequality. write your solutionin interval notation x^3-x<0
*January 10, 2013*

**algebra**

If you have 75 cents and you have 27 nickels and dimes how many nickels do you have.
*January 6, 2013*

**Math**

if a number is subtracted from the numerator of 3/5 and the same number is added to the denomminator of 3/5, the result is equivalent to 1. find the number
*December 5, 2012*

**math**

what times 60 equals 5076
*November 20, 2012*

**math**

rewrite the equation so that y is a function of x.then use the result to find y when x= -2,-1,0,1 -2y-3x-16=0
*November 19, 2012*

**math**

rewrite the equation so that y is a function of x.then use the result to find y when x= -2,-1,0,1 -6x-1=-4y+2
*November 19, 2012*

**math**

i meant 6x-2y=10
*November 19, 2012*

**math**

rewrite the equation so that y is a function of x.then use the result to find y when x= -2,-1,0,1 6x-2y=10
*November 19, 2012*

**math**

thanx for ur help
*November 14, 2012*

**math**

is that correct
*November 14, 2012*

**math**

4(1/2x+1/2)=2x+2 4/2x+4/2+2x+2 2x+2=2x+2 2x+2x=2+2 4x=4 x=1
*November 14, 2012*

**math**

4(1/2x+1/2)=2x+2
*November 14, 2012*

**math**

8x+6=3(4-x)
*November 14, 2012*

**math**

-6+5x=8x-9
*November 14, 2012*

**English**

Direct Object
*November 4, 2012*

**Physics**

A car traveling at 20 m/s applies the brakes. The coefficients of static and kinetic friction between the tires and the road are 0.80 and 0.50 respectively. (A) Determine the stopping distance if the car is able to stop as quickly as possible without skidding. (B) Determine ...
*October 25, 2012*

**Math**

What equivalent fraction would you use to subtract 1/3 from 5/9?
*October 17, 2012*

**Chemistry**

What is the temperature of 0.45mol of gas at a pressure of 1.0at and a volume of 10.1L ? if anyone can tell me what i need to do to solve this problem it would be helpful
*October 5, 2012*

**physics**

The radius of a merry-go-round is 7 meters, and it takes 12 seconds to make a complete revolution. What is the speed of an atom on the outer rim?
*October 3, 2012*

**Math**

How do you solve a(x+1)= b solving for x
*September 20, 2012*

**Math**

How do you solve a(x+1)= b solving for x
*September 20, 2012*

**biology**

What is meant by the statement, "Living things do not exist in isolation"?
*September 11, 2012*

**Chemistry**

If your body develops a charge of -17 (microcoulombs), how many excess electrons has it acquired, and what is their collective mass?
*September 8, 2012*

**Chemistry**

It's 50mg. I really dont understand how to do this.
*September 8, 2012*

**math**

what is the gross profit percent on a item bought for 3.50 at wholesale price and then sold at 5.00 for retail price
*August 18, 2012*

**chemistry**

1002
*August 4, 2012*

**world literature**

I do american school too, hope. If you or anyone wants a homework partner email me: brittneybwilliamson @ yah oo . co m
*July 25, 2012*

**frictionless ramp**

Suppose a 19.3 kg curling stone was on a frictionless ramp. If the ramp is 4.76 m tall and 19.5 m long (along the incline), how much mass must hang from the pulley in order that the stone not accelerate up or down the ramp?
*June 21, 2012*

**Physics Help**

A force sensor is used to measure a force applied to a 9.1 kg box on a hard, horizontal surface. It records that the box starts to move when the force is equal to 26.9 N. This force makes the box start to move with an acceleration of 0.2 m/s2. Find mu sub s/k respectively.
*June 18, 2012*

**algebra 1**

Choose the product. -7p3(4p2 + 3p - 1) -28p5 - 21p4 + 7p3 28p6 + 21p3 - 7p 21p3 + 8p2 + 3p4 - 8p -21p5 + 8p4 - 3p3
*June 11, 2012*

**Chemistry**

Calculate the uncertainty in the position (in A) of an electron moving at a speed of (6.5 +/- 0.1)* 10^5m/s. The mass of an electron is 9.109x10^-31 kg. Thanks!
*May 7, 2012*

**algebra**

If a train goes 25 mph how many hours. Does it need to go in 125 miles
*May 7, 2012*

**history **

How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism?
*April 19, 2012*

**history **

Describe President Reagan’s foreign policy goals and summarize several of the major, specific actions he took to meet those goals.
*April 19, 2012*

**history**

How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstruction-era struggle for blacks to achieve equality?
*April 19, 2012*

**chemistry**

empirical mass = (12+1= 13) molar mass = 78 78/13 = 6; therefore, (CH)6 = C6H6 so thats correct?
*April 19, 2012*

**chemistry**

Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you got your answer.
*April 19, 2012*

**history**

How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism
*April 16, 2012*

**physics**

A charge of 2.1 nC and a charge of 4.7 nC are separated by 57.90 cm. Find the equilibrium position for a -4.7 nC charge. ____ cm from the 2.1 nC charge. what is the answer? and how did you get it? thaanks
*April 11, 2012*

**chemistry**

will SrSO4 precipitate when .1g of Na2SO4 are added to 1L of a .01M solution of Sr
*March 21, 2012*

**MATH FOR TEACHERS**

the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an ...
*March 19, 2012*

**math for elementary teachers**

the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an ...
*March 19, 2012*

**math for elementary teachers**

thank you. helped out alot!
*March 19, 2012*

**math for elementary teachers**

Suppose that carpeting cost $12.36 per square yard at a carpet store. what will be the cost to carpet a conference room if the rooms dimensions are 110 ft by 42 ft. (the conference room should seat 380 people using 6' diameter tables each seating 10 people.)
*March 19, 2012*

**Chemistry**

A string has a length of 84 cm. The string is stretched taut, and both ends are restricted to be nonmoving. Touching the string at which of the following points will not produce a standing wave when the string is plucked?
*February 15, 2012*

**science**

If the magnitude of the electric field in air exceeds roughly 3 X10^6 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 52 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without a spark forming (...
*February 11, 2012*

**history **

How was Fort William Henry massacre used by the British and the American colonists to justify brutality against the Indians? HELPPPP PLEASE
*February 6, 2012*

**history **

Discuss the importance of landscape in crafting battle strategy for both the French and the English. HELP PLEASE!
*January 30, 2012*

**philosophy**

what makes an idea dangerous?
*January 25, 2012*