manu
Popular questions and responses by manu
math
Factorise by splitting the middle term: x^2120xy625y^2
asked on May 2, 2008 
physics
Given a slab with refractive index n=1.33 and incident light striking the top horizontal face at angle i.The maximum value of i for which total internal reflection occurs is:
asked on March 20, 2016 
math
Factorise: 25a^235a+12
asked on May 6, 2008 
Physics
The steam point and the ice point of a mercury thermometer are wrongly marked as 92 and 2 resp. The correct temperature read by this thermometer is
asked on November 4, 2018 
maths
If the length of the fence of a trapezium shaped field ABCD is 130m and side is perpendicular to each of the parallel side AD and BC.if BC=54m ,CD=19m and AD=42m, find the area of the field.
asked on February 16, 2015 
physics Important please
A potential difference of 12.0V is maintained across an electrical device with a resistance of 10.0Ω. What total charge passes through a cross section of wire attached to this device over a period of 4.00s?
asked on November 12, 2013 
physics
In this problem, we will carry out some steps of the quantum factoring algorithm for N=91. (a) What is the period k of the periodic superposition set up by the quantum factoring algorithm if it chooses x=8? I.e. what is the period of f(j)=8j(mod91) (b)
asked on October 13, 2013 
physics
Suppose we ran m steps of Grover's algorithm on some function f (which has one marked element y) and the resulting superposition was exactly y⟩. If we run for m+1 additional steps (i.e. total of 2m+1 steps from the initial state), what is the resulting
asked on October 13, 2013 
physics
A box of mass 10kg starts from rest and slide down a plane angled at 45 degrees to the horizontal. the box slides 2m down the plane before it encounters a spring with constant k=500 N/m which causes it to come to rest. What will the maximum compression of
asked on October 31, 2010 
science
is this true? the maximum density of water is maximum at 0 degree c
asked on May 12, 2008 
Math
The volume of a sphere is increasing at the rate of 5 cm.cm.per second .Find the rate of increase of the radious and surface area when the radious is 6cm.
asked on January 22, 2017 
Social science
Write a diary entry relieving your days glory as Napoleon in exile at st.helena
asked on June 28, 2016 
physics
an atom is placed in a uniform magnetic induction B. such that its plane normal to the electron orbit makes an angle of 30 degrees with the magnetic induction the torque acting on the orbiting electron?
asked on June 24, 2016 
Physics
a ball is tossed from an upper story window of a building given an initial velocity of 8m/s at an angle of 20 below the horizontal.it strikes the ground 2seconds later. how far horizontaly from the base of the building does it strike the ground? find the
asked on November 1, 2015 
maths
from a group of 15candiatesu r choosing president vice president andsecretryto work on your sales in how many ways it can be done
asked on May 22, 2015 
maths
calculate the length of a solid bar of 4cm diameter casted by melting solid cube its each sides is 22cm
asked on April 11, 2015 
english
if i am a poet, i would rite many poems. st.paul is biggest church in chennai. he was so weak ,he could hardly stand. he has left his job,isnt it? i want the correct answers of these sentences
asked on January 2, 2015 
english
if ypu informed i would have given my book
asked on January 2, 2015 
math
William owes $9,000.00 to a friend who is charging him interest of 1.60% p.m. he is required to settle the amount with 2 equal payments, one today and the other in 2 months. Calculate the size of the payments using 2 months as the focal date. Round your
asked on October 23, 2014 
confederation
William owes $9,000.00 to a friend who is charging him interest of 1.60% p.m. he is required to settle the amount with 2 equal payments, one today and the other in 2 months. Calculate the size of the payments using 2 months as the focal date. Round your
asked on October 23, 2014 
Chemistry
An organic acid has a percentage composition by mass of C 41.4%, H 3.4%, and O 55.2%. A solution containing 0.250g of the acid, which is dibasic required 26.60 cm cubed of NaOH solution (0.20 mol.dm 3) for neutralisation. Calculate the empirical formula,
asked on September 20, 2014 
economics math
Consider a rational consumer with a utility function given by U(x,m)=Aln(2x)+m. The consumer needs to decide how much of good x to buy given the following pricing rule: the first 10 units sell at a price of $2 p/unit, additional units sell at a price of $3
asked on January 20, 2014 
economics math
Consider a consumer who has an experienced utility function given by UEU(x,m)=2sqrtx+m. Let q denote the market price of good x, and assume that it remains fixed throughout the problem. The company selling the good x starts an advertisement campagin that
asked on January 20, 2014 
economics math
Consider the problem of a rational consumer with an experienced utility function given by 10ln(x)+m and a wealth level W=100. Suppose that the market price for good x is p=$2 per unit. You are asked to analyze the impact on the consumer's demand of the
asked on January 20, 2014 
economic math
Imagine that you own a small business and that you have to decide how much of your product to sell every year, and which technology to use to produce it. Your market research suggests that the price at which you will be able to sell each unit of your
asked on January 17, 2014 
magnetism
very large loop of metal wire with radius 1 meter is driven with a linearly increasing current at a rate of 200 amps/second. A very small metal wire loop with radius 5 centimeter is positioned a small distance away with its center on the same axis (the
asked on December 3, 2013 
magnetism
In earlier learning sequences we described how a static magnetic field cannot change the speed (and therefore kinetic energy) of a free charged particle. A changing magnetic field can, and this is one way particle beams are accelerated. Consider free
asked on December 3, 2013 
magnetism
Many metals become superconductors (zero resistance, zero loss, zero heating) at low temperatures. If they are warmed above the critical tempareature, the superconductivity is lost. Also, if the metal experiences a magnetic field above a critical value,
asked on December 1, 2013 
magnetic field
Two long, parallel wires carry current in the xy plane. One wire carries 30 A to the left along the xaxis. The other carries 50 A to the right along a parallel line at y = 0.28 m. At what yaxis position in meters is the magnetic field equal to zero?
asked on December 1, 2013 
physics Important please
A metal wire has a resistance of 8.00Ω at a temperature of 20C. If the same wire has a resistance of 8.40Ω at 70C, what is the resistance of this wire in ohms when its temperature is −10C?
asked on November 12, 2013 
physics
three electric charges, 3e, 3e and 12e, where "e" is proton charge, are placed at three of four vertices of a square of side 3cm. Calculate the electric field in the center of the square.
asked on November 10, 2013 
physics
Consider an insulating sphere with 10 microCoulombs of charge uniformly distributed through its volume. The sphere is surrounded by a conducting spherical shell that has a total charge of 3 microCoulombs. Outside the conucting shell is an insulating shell
asked on November 10, 2013 
physics
A spherical shell of uniform charge density σ has a circular hole cut out of it.What is the Electric Field at a radius just outside the sphere, directly over the center of the circular, cutout hole? Type "sigma" for σ and "epsilon_o" for ϵo. HINT: the
asked on October 24, 2013 
physics
A spherical shell of uniform charge density σ has a circular hole cut out of it. What is the Electric Field at a radius just outside the sphere, directly over the center of the circular, cutout hole?
asked on October 23, 2013 
physics
Consider the Hamiltonian H=Z⊗3 acting on 3 qubits. What is the ground energy of the system? (I.e. the lowest eigenvalue of H?) What is the dimension of the ground energy subspace? (I.e. multiplicity of that eigenvalue?)
asked on October 13, 2013 
Science  Radiation
A radioactive isotope, used in the agricultural industry has a half life of 8 days. On application, the radiation is emitted is measured at 12500 counts per sec (cps). If the area that it is applied to cannot be used until the radiation strength is less
asked on January 26, 2013 
Algebra 1 a
Need help to solve can anyone help me please 6x9y = 25.5 7y2x =10.0 solve the elimination method
asked on June 26, 2011 
physics
A 4kg box starts up a 30 degree incline with 128J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.3?
asked on October 31, 2010 
science
why well is built in a shape of circle?
asked on May 11, 2008 
math
Factorise: 27p^31/2169/2p^2+1/4p
asked on May 11, 2008

Physics
answer
posted on September 29, 2019 
physics
given speed =distance /time =8m/s force = 2000N power =work /time=force *displacement /time =2000*8/1 =16000j/s
posted on April 15, 2018 
Maths
0 meter
posted on March 19, 2017 
Social science
I m exiled here in the island of st.helena
posted on June 28, 2016 
Economics
MC= 8 Av cost= (3q2+5q+300)/2
posted on March 7, 2016 
CALCULUS ECONOMICS
right for Q6!!!!!!!thankssssss
posted on March 23, 2014 
CALCULUS ECONOMICS
Yes, they are right! Have you the answers of question 5,6,7? Thanks very very much!
posted on March 23, 2014 
economic math
the right value is zero
posted on January 20, 2014 
magnetism
It'swrong!!
posted on December 1, 2013 
Physics Solinoid
d) is wrong!
posted on December 1, 2013 
magnets
13.86° 4.79 *10^6 m/s
posted on November 20, 2013 
physics Important please
I find 4.8C but it's wrong!
posted on November 13, 2013 
physics Important please
A metal wire has a resistance of 8.00Ω at a temperature of 20C. If the same wire has a resistance of 8.40Ω at 70C, what is the resistance of this wire in ohms when its temperature is −10C?
posted on November 12, 2013 
Physics Important please
h(2*ke*q*lambda)/(ks*l)
posted on November 10, 2013 
physics
1.92*10^(18)
posted on November 10, 2013 
physics
3.6*10^7 N/C
posted on November 10, 2013 
Science  Radiation
Thanks Devron
posted on January 26, 2013 
Science  Radiation
Thank you for your answer. Why is it 500? Sorry I am just trying to understand
posted on January 26, 2013