Total # Posts: 1,818
a 50 kg student who is late runs up two flights of stairs whose combined vertical height is 7.0 m in 10 s (and he then silently enters the classroom while the professor is writing on the chalkboard).Calculate the student's power output in doing work against gravity in a) ...
February 5, 2013
PLEASE CHECK THESE ANSWERS AMERICAN GOV
Grade Details - All Questions Question 1. Question : The nerve center of the American Presidency is Student Answer: the Presidents Cabinet. CORRECT the Executive Office of the President. the Congressional houses. the Civil Service. Instructor Explanation: The answer can ...
February 3, 2013
A light plane attains an airspeed of 491 km/h. The pilot sets out for a destination 785 km due north but discovers that the plane must be headed 20.5° east of due north to fly there directly. The plane arrives in 2.25 h. What was the magnitude of the wind velocity? What ...
January 26, 2013
A particle moves along the x-axis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3 - 3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is moving to the left. ...
January 25, 2013
Two equally charged insulating balls each weigh 0.42 g and hang from a common point by identical threads 35 cm long. The balls repel each other so that the separation between their centers is 6.4 cm. What is the magnitude of the charge on each ball? I have tried using similar ...
January 17, 2013
Yes, humidity! It can not be raining but have a humidity of say 90 percent which is still considered precipitation. Like when you walk out side and it feels muggy and wet in the air.. But there is no rain.
January 7, 2013
Mr.Lewis drew a triangle measurement, x, .5x, and 1.5x. What is the best classification for this triangle? a. acute, scalene b. obtuse, scalene c. right, equilateral d. equiangular, equilateral e. obtuse. isosceles (i don't understand how to solve this problem)
December 27, 2012
If the given point is on the terminal arm of an angle A in standard position, angle A is greater than or equal to 0 degrees and it is less than or equal to 180 degrees, find the measure of angle A, to the nearest tenth of a degree. a) (4,3) b) (12,5) c) (-6,8) d) (-24,7) ...
December 18, 2012
Based on data from the Federal Bureau of Investigation, violent crimes in a recent year occurred with the distribution given in the accompanying table. The listed percentages are based on a total of 1,424,287 cases of violent crime. Use a 0.01 significance level to test the ...
December 16, 2012
The pressure of a gas varies jointly as the amount of the gas (measured in moles) and the temperature and inversely as the volume of the gas. If the pressure is 975 kPa(kiloPascals) when the number of moles is 4, the temperature is 250 K, and the volume is 320 cc, find the ...
December 5, 2012
No I did not try scholar in google I forgot about it will try now I tried many been working on this for three weeks And I wouldn't be asking if I only tried one! Please don't assume and Thank you
December 1, 2012
Lyle got paid to today. He used 1/2 of his check to pay bills. He spent 30% of what was left on new clothes, and going out to eat. while he was out, he gave $20 to a salvation army charity santa on the street corner. He put 3/4 of what was left into savings. He lent his friend...
November 29, 2012
No glass is perfectly transparent. Mainly because of reflections, about 92% of light passes through an average sheet of clear windowpane. The 8% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is transmitted by three sheets?
November 28, 2012
You have been requested to display your family portrait in the lobby of the new Hampton inn in west Jordan it portrait measures x inches one side. and the other side is 2" longer than the other. the frame that surrounds the portraits is 2 inches wide. You are planning on...
November 19, 2012
A model rocket is launched from a height of 50 feet. the formula: h=-16t^2+70t+50 describes the rocket's height,h,in feet t seconds after it was launched. how long will it take the rocket to reach the ground.
November 19, 2012
your house sits on a rectangular lot that has a perimeter of 320 feet. you want to fence the two sides and the back of your lot. your neighbor on the back end wants to have a concrete frence that costs $16 per foot. your side neighbors do not want such an expensive fence and ...
November 19, 2012
When people have indigestion or "heartburn" they often take an antacid to reduce the amount of stomach acid (hydrochloric acid). Two antacids are Mylanta (magnesium hydroxide) and Titralac (calcium carbonate). Jimmy prefres to take Mylanta because Titralac makes him ...
November 18, 2012
7th grade math Ms. Sue please help I have no idea!
Cut a piece of ribbon 6.18 m long into 6 equal pieces
November 5, 2012
In one town 76% of adults have health insurance, find the probability that 8 adults selected at random from the town all have health insurance. would it be unusual to select 8 people and find they all have health insurance. and why?
November 4, 2012
really stuck on these two, steps would be greatly appreciated. gotta find the derivative thanks! first one: f(t)=2^(log5t) the 5 is the base second one: y=(2(x^2) - 1)^5 /(√(x+1) for the second one you have to use logarithmic differentiation
October 31, 2012
really stuck on these two, steps would be greatly appreciated. gotta find the derivative thanks! first one: f(t)=2^(log5t) the 5 is the base second one: y=(2(x^2) - 1)^5 /(√(x+1)
October 31, 2012
ENGLISH II HELP PLEASE!!
Which type of faulty logic does this sentence contain? Although the cheeseburger is the most sought-after item on our menu, it is really difficult to manage the crowd in the drive-up lane because of the high demand; so, the cheeseburger should be taken off the menu. A. ...
October 30, 2012
ENGLISH II PLEASE HELP!
Buy, sell, and trade on the Internet, and become a millionaire overnight! Which propaganda technique is used in this sentence? bandwagon glittering generalities faulty cause and effect snob appeal
October 30, 2012
How does the author support her view that the lunch period at Mountain Vista High School should be extended? A. by explaining that many students are unable to eat lunch in the time left after waiting in long lines B. by citing research showing that students who dont eat ...
October 26, 2012
How do I do the foll9owing example? K-40 - A-40 (1.25 billion years) After careful analysis, a geochronologist determines that an unweathered, unmetamorphosed mineral sample contains 7 trillion atoms of the radioactive element K-40 and 105 trillion atoms of its decay product A...
October 25, 2012
Use the balanced equation to answer the following: 3AgNO3(aq) + FeCl3(aq)...Fe(NO3)3(aq) + 3AgCl(s) If 21.73g of FeCl3 is mixed with 48.97g of AgNO3 a) Which is the limiting reagent? b) How many grams of AgCl can be theoretically produced? c) If 15.97g of AgCl was collected, ...
October 21, 2012
in a rectangular with a perimeter of 30 inches two parallel and equally spaced creases are made the cardboard is then folded to make a triangular prism with open ends that are equilateral triangles you will maximize the volume how do i solve this?
October 18, 2012
7)State whether the following sentences are true or false. Rewrite them if they are false. a) Every chemical reaction taking place in cells is regulated by a specific enzyme. b) Enzymes work inside cells only. c) Enzymes are carbohydates d) An active site is the part of the ...
October 14, 2012
Movies A survey of 350 customers was taken at Regal Cinemas in Austin, Texas, regarding the type of movies customers liked. The following information was determined. 196 liked dramas. 153 liked comedies. 88 liked science fiction. 59 liked dramas and comedies.  ...
October 9, 2012
A rock climber stands on top of a 56m -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0s apart and observes that they cause a single splash. The initial speed of the first stone was 2.5(m/s) How long after the release of the first stone does...
October 2, 2012
In preparing some blood for observation with a microscope, a student puts a drop of blood into a test tube containing 2 cm3 of water. After mixing, he examines a drop of the mixture. Explain why he cannot see any blood cells under the microscope.
October 2, 2012
a 5.63kg ball hangs from a vertical pole by a 2.4 long string. Assume the ball is moving at 4.33m/s in a horizontal circle with the string remaining taut. Calculate the angle that the string makes with the pole.
October 1, 2012
6th grade Math
I got a problem wrong and I don't know why. Here it is: A highway construction warning sign blinks on and off. In all, the sign is on for 0.88 of each minute. For how many seconds is the sign on in 5 minutes? I multiplied 0.88 x 5 and got 4.40 but it was marked wrong. What...
September 27, 2012
the odyssey simile book 16 "ospreys or vultures with hooked claws, whose children were stolen away by the men of the fields, before their wings grew strong; such was their pitiful cry and the tears their eyes wept" is there someone who can guide me as to what this means
September 18, 2012
At 23°C, Kp = 0.075 for the equilibrium: NH4HS (s) ↔ NH3 (g) + H2S (g) A sample of solid NH4HS is placed in a closed vessel and allowed to equilibrate. Calculate the equilibrium partial pressure (atm) of ammonia, assuming that some solid NH4HS remains.
September 14, 2012
Please check my work On November 1, 2009, Broom Company received a bank statement that showed a $2,950 balance. Broom showed a $4,010 checking account balance. The bank didnt return check No. 124 for $1,080 and check No. 138 for $720. A $3,200 deposit made on October 30 ...
September 10, 2012
An artillery shell is fired with an initial velocity of 300m/s at 55 degrees above horizontal. To clear an avalanche, it explodes on a mountainside 42.0s after firing. What are the x and y coordinates of the shell where it explodes, relative to its firing point?
September 6, 2012