Posts by Monika

Total # Posts: 41

science
can a metal sphere of radius 1cm hold a charge of 1 coulomb?justify your answer.

maths
f(x)=x^2+3x+1,g(x)=2x-3, find fog and gog

chemistry
The H3O+ ion concentration in water is 1/10000000 molar.The degree of ionisation of H2O is? If given molarity of pure water is 55.5Molar.

Math- 2 questions!
1. To __________ means to cut into 2 congruent parts A. intersect B. bisect** C. construct D. divide I think B 2. Which tool is not needed to construct a perpendicular bisector? A. compass B. pencil C. protractor** D. straightedge I think C Please check!!

math
Chalk contains 3 percent carbon 10 percent calcium and oxygen find the amount in grams of each of these substances in 1 kg

English
you should pay your taxes regularly (rewrite the sentence. using 'have got to'

Chemistry
How would i go about finding the theoretical yield of Fe3O4? Would I just plug in one of those numbers into the % yield equation?

Chemistry
500 g of Fe reacted with water to yield 4.2 g of H2. Fe3O4 was also produced in the reaction. What is the %yield of H2?

college physics
A 49-kg lead ball is dropped from the leaning tower of Pisa. The tower is 54 m high. (a) How far does the ball fall in the first 2.4 seconds of flight? (b) What is the speed of the ball after it has traveled 4.1 m downward? (c) What is the speed of the ball 1.7 s after it is ...

Physics ib
What is the way to set up an electric circuit with a filament lamp, switch, battery, ohmmeter, voltmeter and variable resistor as to have the most optimal measurement for the current and voltage?

Physics
How much energy (in MeV) is released in the reaction proton + deuteron goes to 3He + gamma? (You may ignore the initial kinetic energy of the reactants.) For the purposes of this problem, use the following masses (in MeV/c2): Proton: 938.783263054 Neutron: 939.5657182828 ...

Physics
How much energy (in MeV) is released in the reaction proton + deuteron goes to 3He + gamma? (You may ignore the initial kinetic energy of the reactants.) For the purposes of this problem, use the following masses (in MeV/c2): Proton: 938.783263054 Neutron: 939.5657182828 ...

Physics
Consider an interstellar spaceship powered by matter-antimatter reactions. The energy resulting from the matter-antimatter reactions is ejected from the exhaust as electromagnetic radiation producing thrust. The design goal is to have the thrust produce an acceleration equal ...

CHEMISTRY
The temperature at which molarity of pure water is equal to its molality

maths
let the CP of the articles be 100 MP of the articles=100+20% of 100=120 total cpf x articles =100x Let No,of artiles be x SP of 3/5 of x=120 total SP of 3/5th articles=120*3/5*x=72x SP of remaining articles: Remaining aricles=1-3/5=2/5 SP of 2/5 of x= MP-20% of MP =120-20%*120...

Chem
Thank you. I was so confused on what to do.

Chem
A newly discovered element, Mysternium (Atomic symbol My) has two isotopes and an average atomic mass of 296.7286 amu. One of the isotopes, My-296 has a natural abundance of 61.528% and has a mass value of 295.9064 amu. What is the mass of the second isotope?

General chem
How many electrons can have the quantum numbers n=4; l=2; ml=2 in an atom?

science
If your weight is 60 N on earths surface how far should you go from the centre of earth so that your weight will be 300 N ?(radius of earth is 4.4*10^6 m)

chemistry
Thanks

chemistry
How do you make 300 ml of a 2M solution from a 50 M stock solution?

Visual Basic intro to Programming
What is the difference between the If Then ElseIF clause and a Nested If Block? Please provide examples of how you would use each.

Physics
A 700 KG horse is pulling a sled at a velocity of 3.5 m/s. If the horse's power output is 746 watts, the force exerted on the sled is?

Physics
This is the same question that HAS is using. I'm happy that I'm not the only one who needs help with it.

Physics
a car with mass mass of 1875 is traveling along a countr

geometry
how di find perimeter of the triangle in terms of x one side is 5, secod side is 4x, and the third side is x-3 will u please help me any one. thanks

Chemistry
a solution contains an unkown amount of dissolved magnesium, addition odf 0.0877 mol of Na2CO3 causes complete precipitation of all the magnesium. what is the mass of magnesium was dissovled in the solution? you must write a balanced equation for the raction in order to solve...

windows xp
David, a graphic designer working for a small Internet firm, wants to use his own legacy scanner with a new Windows XP Professional system. A Standard PC HAL was installed during the machine build process. David’s computer is a member of the corporate domain, and David ...

Physics
A 0.25 mass is located on the outer edge of a wheel of radius 0.75 m that is turning at a rate of 2 revs/s. Determine the following: 1) The period of the mass 2) The angular speed of the mass in rad/s c) The tangential speed of the mass d) The centripetal acceleration of the ...

Math word problem
12 and a half

Math word problem
12

physics
A skier skis down a 25 m high frictionless ski slope. How fast will she be moving at the bottom of the slope if: A) She starts from rest at the top B) She starts out with a velocity of 10 m/s

physics
A skier skis down a 25 m high frictionless ski slope. How fast will she be moving at the bottom of the slope if: A) She starts from rest at the top B) She starts out with a velocity of 10 m/s

3rd grade
1529,tens 2,

MATH Prob.
99degree

mathematics
The basic wage earned by a truck driver for a 40 hr work week is $560.00. A)Calculate his hourly rate. Is the ans $14 per hour 2) For overtime work, the driver is paid one and a half time the basic hourly rate. B)Calculate his overtime wage for 10 hrs of overtime Is the ans...

college
How will employees in the medical office have to be trained regarding privacy(for example, who is responsible for training and record keeping)? What is required if an employee doesnt follow the privacy policy? When must employees be trained? In what manner?

Economics
a) 1=-8/2=-1/3=6/4=19/5=21/6=21/7=19 maximizing profit is at a quantity of 5 or 6 b) MR: 0,8,8,8,8,8,8,8 MC: 1,1,1,2,6,8,10 Profit maximizing point at 6 because there MC equals MR. c) the firm is in a competitive industry because price stays the same (horizontal) at any ...

Chemistry to DrBob
calculate percentage of water in Na2co3 . H2O

Chemistry
i don't understand the P2 and T2 part with the STP

Geography.../what does this mean?
"the earth's physical landscape is the result of conflict between forces" explain what this means.