Monday
September 22, 2014

Posts by Please help me


Total # Posts: 48

PHYSICS
A conductor of length 0.5m moves in a uniform magnetic field of flux density 2 wbm^2. at a uniform velocity of 40m/s. Calculate the induced EMF under the following conditions: (1) the conductor moves at right angle to the magnetic field (2) the conductor moves at an angle of ...
July 26, 2014

algebra
(2x)^-6
March 17, 2014

algebra
(-2x)-6
March 17, 2014

Maths
Assume that the population of India is 120 million. If 40.25% of the population has height below 5 ft. and 30.76% of the population has height between 5 and 5.5 ft. Find how many people have height greater than 5.5 ft., rounding off your result to 2 decimal places
November 21, 2013

Physics
If you simultaneously drop a pair of tennis balls from the top of a building, they strike the ground at the same time. If one of the tennis balls is filled with lead pellets, will it fall faster and hit the ground first? Which of the two will encounter more air resistance?
September 15, 2013

PHYSICS/SCIENCE
If a Mack truck and a motorcycle have a head-on collision, upon which vehicle is the impact force greater? Which vehicle undergoes the greater change in its motion? Defend your answers.
September 15, 2013

Physics
If a Mack truck and a motorcycle have a head-on collision, upon which vehicle is the impact force greater? Which vehicle undergoes the greater change in its motion? Defend your answers.
September 15, 2013

chemistry
When does a chemical become a drug?
May 5, 2013

MATH
2(7w-1w+7)>122 ? what work would i do? im just learning inequalties and i have a quiz tomorrow with problems like this, please help!
February 6, 2013

English
I have to change the following sentence from passive voice to active voice and I'm having a hard time. Academic performance is influenced by peer pressure due to socializing negatively, lowering grades, and not staying on task.
December 11, 2012

Chemistry
No this is homework not an exam
December 6, 2012

Chemistry
The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled with AhF to a ...
December 6, 2012

math
The dance company has a $10 cover charge, an average of 200 people will attend. For each $0.25 increase in admission price, the average number attending decreases by 1. What should the owner charge in order to make the most money? what is the maximum money that can be earned?
November 24, 2012

Math
Please help me, I'm having a hard time setting up this problem. George can plant a garden in 2 hours, and it takes Joyce 3 hours. They work together for 45 mins, and George leaves and Joyce finishes the job alone. How long does it take Joyce to finish planting the garden?
October 30, 2012

Math
Please help me, I'm having a hard time setting up this problem. George can plant a garden in 2 hours, and it takes Joyce 3 hours. They work together for 45 mins, and George leaves and Joyce finishes the job alone. How long does it take Joyce to finish planting the garden?
October 30, 2012

physics
There is a legend of a Dutch boy who bravely held back the whole Atlantic Ocean by plugging a hole in a dike with his finger. Is this possible and reasonable? Estimate the force if the hole were about 1.5 square centimeter in area and 1.8 meter below the water level.
May 14, 2012

Math 8th Grade
I would greatly appreciate it if someone would please be kind enough to take the time and show me how to work these problems. Thank you very much Solve by finding y and graph using the slope and y-intercept: 3x-y=1(My answer -y=3x+1)which is wrong could not graph it. x-y=3 (My...
May 12, 2012

Math
I don't understand the part of "nearest tenth of a foot". My answer is 114.61 but I don't get the part above mentioned.
February 27, 2012

Math
The largest tree in the world is the General Sherman sequoia in Sequoia National Park, California. It is 275 feet high, has a diameter of 36.5 feet, and has an estimated weight of 2,150 tons. Fin the sequoia's circumference to the nearest tenth of a foot. Use 3.14
February 27, 2012

Math
Jason makes two pictures. Picture 1 is made with the help of a pencil and picture 2 is made with the help of a pencil, compass, and protractor Which statement best compares the two Answer: A:Picture 1 is a drawing because it does not use measuring tools and Picture 2 is a ...
October 3, 2011

geomtry
Martin and Patrick have a model of an airplane which they want to duplicate. Martin uses a string and ruler to make approximate measurements of lengths to duplicate the picture. Patrick uses a pencil and paper and duplicates the picture without the help of tools. Which ...
September 30, 2011

math
Lara wrote the statements shown in the chart. Statement One: If two lines intersect, then they intersect at exactly one point Statement Two: In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the length of the legs. Which ...
September 29, 2011

geometry
Alice is making the profile of a face. She is also making an exact replica of a circle with a radius of eight inches. Which statement is correct about the profile and the replica?Answer A: The profile is made by sketching and the circle is made by drawing. B: The profile is ...
September 26, 2011

chemistry
What would be the result if 5.0 L of hydrogen was burned with 2.0 l of oxygen in a closed container?
September 21, 2011

phisic
Treating air as an ideal gas of diatomic molecules, calculate how much heat is required to raise the temperature of the air in an 7.47 m by 14.9 m by 2.87 m room from 19.9°C to 21.7°C at 101 kPa. Neglect the change in the number of moles of air in the room
May 3, 2011

Math
Simplify I came up with 5.5 (15x^5-21x^4+21x^2)/(3x^2 ) not sure if I did this the correct way it just doesn't seem right at all.
April 16, 2011

physics
Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside environment. Find the ...
April 5, 2011

physics
For a class demonstration, your physics instructor pours 1.16 kg of steam at 100.0°C over 4.69 kg of ice at 0.0°C and allows the system to reach equilibrium. He is then going to measure the temperature of the system. While the system reaches equilibrium, you are given ...
April 5, 2011

physics
Water is flowing in a pipe as depicted in the figure. As shown, p = 117 kPa, d = 4.67 cm, d' = 3.06 cm, v = 4.36 m/s, and h = 1.11 m. What pressure is indicated on the upper pressure gauge? Take y = 0 at the bottom of the left pipe so that the center of the left pipe is y1...
March 26, 2011

Physics
how do i find the volume of a block of platinum weighing 45.5 kilos
January 9, 2011

CHEMISTRY
CAN someone please point me in the right direction I am trying to find a complete list of all of the ate Oxyanions because I need to memorize them and can't find a complete list of them like sulfate nirtate phosphate carbonate... can someone provide a complete list I can&#...
September 10, 2010

MATH
A radio tower 500 feet high is located on the side of a hill with an inclination to the horizontal of 5 degrees. How long should two guy wires be if they are to connect to the top of the tower and be secured at two points 100 feet directly above and directly below the base of ...
February 16, 2010

algebra
a car sells for $25000. if the rate depreciation is 15% what is the value of the car after 7 years
February 9, 2010

finance
a car sells for $25000. if the rate depreciation is 15% what is the value of the car after 7 years
February 9, 2010

algebra
thanks i cant believe its that easy and i was real confused
October 8, 2009

algebra
what would [5-2]+-7-(-9)= what would be my specific steps
October 8, 2009

finance
on may 12, Scott accepted an $8000, 12%, 90 day note for a time extension of a bill for goods bought by ron. On june 12, scott discounted the note at able bank at 10% What proceeds does scott receive
March 15, 2009

math
Ron bought goods from shelly katz. On may 8, shelly gave ron a time extension on his bill by accepting a $3000, 8%, 180 day note. On august 16, shelly discounted the note at Roseville bank at 9% what proceeds does shelly rerceive?
March 15, 2009

math
on may 12, Scott accepted an $8000, 12%, 90 day note for a time extension of a bill for goods bought by ron. On june 12, scott discounted the note at able bank at 10% What proceeds does scott receive
March 15, 2009

9th grade math
Hey i need help on my math hw i just dont get it lol please help me! Here the questions Which of the following equations has a graph that is parallel to the graph of 4x-2y=7? A:-2y = 4x+2 B:7-4x=2y C:4x+2y=2 D:-4x-2y=-7 E:2y=4x+7 Determine if the two lines 7x+5y=35 and y= -7 ...
March 1, 2009

Grammar
thank you so much!!
November 29, 2008

Grammar
so is #1 complex? because that is the only choice left.
November 29, 2008

Grammar
Indentify each sentence below with Simple, compound, complex, or compound-complex. Could you pleas tell me if these are correct? 1. After they defeated Germany in World War II, the Allies divided Germany and its capital city, Berlin, into four sectors: a British sector, a ...
November 29, 2008

english
analogies....1.achievement:admiration:_______:sympathy......2.brave:reckless:curious:_______
September 24, 2008

NUTRITION
thank you but, do you know more about this that you can tell me?
November 21, 2007

NUTRITION
WHICH IS THE MOST COMMON FOOD IN USA?
November 21, 2007

social studies
Can you tell me what kinf of food does the american people ate in the past?
November 21, 2007

social studies
U.S.A old diet-food
November 21, 2007

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