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vishal
Questions (47)
If x+1/x=2 then the value of x^2014+1/x^2016
2 answers
444 views
1 Mole of bacl3
2 answers
378 views
Find (-5 i) (1/8 i)
2 answers
397 views
when 8.4 g of NaHCO3 is added to a solution of CH3COOH weighing 20 g .It is observrd that 4.4 g of CO2 is releasd into
1 answer
1,722 views
a bullet fired with a speed of 150 m/sec from car whose velocity is 25/3 m/sec to car next to it whose velocity is 50 m/sec.what
0 answers
436 views
A copper block of mass 500gm and spcific heat0.1cal/gm celcius is heated from30degrees to 290degrees celcius the thermal
0 answers
603 views
a 2 digit number is 9 times the sum of its digits .if it's ones and tens digits be x and y.write a linear equation in two
1 answer
465 views
Acetylene(C2H2), an important fuel in welding, is produced in the laboratory when calcium carbide (CaC2) reacts with water:
1 answer
3,409 views
liquid water of mass 10 kg & temperature 20 degree celsius mixed with 2 kg of ice at -5 degree celsius till equilibrium is
1 answer
1,418 views
length of a rectangle exceeds its breadth by 4 m. if the parimeter of the the rectangle is 84 m, find its length and breadth.?
6 answers
1,998 views
Why electric dipole moment between two charges points from negative to positive charge.
0 answers
570 views
The shear stress in a plane normal of which makes an angle of 30 degree with the direction of maximum principal stress will be ?
0 answers
535 views
Wheel of car is making 5 revolution per second . if the diameter of the wheel is 84cm .find its speed in km/h
1 answer
647 views
A conductor in a shape of a spherical shell of radii 10 and 12cm in charged to 20 micro coloumb.
1) Find the electric field at
0 answers
603 views
The charge per unit length on a long, straight filament is -87.0 µC/m.
(a) Find the electric field 10.0 cm from the filament.
1 answer
2,317 views
The charge per unit length on a long, straight filament is -87.0 µC/m.
(a) Find the electric field 10.0 cm from the filament.
0 answers
583 views
The charge per unit length on a long, straight filament is -87.0 µC/m.
(a) Find the electric field 10.0 cm from the filament.
0 answers
780 views
a) Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other.
1 answer
781 views
A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the
1 answer
4,449 views
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is
1 answer
1,086 views
(a) Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the
0 answers
736 views
A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the
0 answers
998 views
Integral sin 8x/2 cosx/2 dx
1 answer
403 views
Integral -csc^2 (2x+9)dx
1 answer
406 views
integral cos(4z-5)dz
1 answer
392 views
integral 3z^6 sqrt(2-3z^7)dz
1 answer
358 views
Use the indicated substitution to evaluate the integral
integral 18sec(2x) tan(2x)dx, u=2x
1 answer
658 views
Evaluate the following indefinite integral by using the given substitution to reduce the integral to standard form
integral
0 answers
867 views
Evaluate the following indefinite integral by using the given substitution to reduce the integral to standard form
integral
1 answer
2,801 views
find dy/dx y= integral upper limit tanx and lower limit 0 of dt/1+t^2
1 answer
525 views
Evaluate the integral upper limit sqrt11 and lower limit 1 of (s^2 + sqrt 5)/ s^2
1 answer
586 views
The sum of the tens and ones digits of a 2-digit number is 12.
The digit in the tens place is greater than the digit in the ones
2 answers
455 views
A 2-digit number has a greater tens digit than the ones digit.
The difference between the tens and ones digit is 3. The sum of
1 answer
596 views
what is evidnece that cathode rays are part of matter?
1 answer
436 views
1)why bohr orbit are called stationary orbit? 2)what do you mean by saying energy of electron is quantised?
0 answers
362 views
1)why bohr orbit are called stationary orbit? 2)what do you mean by saying energy of electron is quantised?
0 answers
402 views
balance the equations 1)Mg3N2+N2+H2O=Mg(OH)2+NH3 2)KMnO4+H2S+H2SO4=KHSO4+H2O+MnSO4 3)AS2O3+SnCl2+HCL=SnCl4+AS+H2O
2 answers
1,184 views
1)nitrogen atom has atomic no 7 and mass no 14.hydrogen atom has atomic no 1 and mass no 1.what is no of protons and neutrons of
2 answers
614 views
Find the area of the triangle whose vertices are (2,3),(3,4),(-2,-4).
1 answer
563 views
a gun is fired at a distance of 24.3km away from man. he hears the sound after 27 second. find the speed of sound at which it
3 answers
833 views
A uniform chain 10m long and weighing 6 kg permetre hangs vertically.calculate the work required to wind it up
1 answer
1,528 views
Factor completely and then place the factors in the proper location on the grid.
4n2 + 28n + 49
2 answers
841 views
A person walks in the following pattern: 2.9 km north, then 1.9 km west, and finally 8.0 km south. How far and in what direction
1 answer
920 views
if co-efficient of friction between tyre and road is0.5, what is smallest radious at which car turn on a horizontal road when
0 answers
556 views
a wheel having diameter 2m starts from rest and accelerates uniformly to an angular velocity of 75 revoulutions per minute in
2 answers
1,045 views
if co-efficient of friction between tyre and road is 0.5, what is smallest radious at which car turn on a horizontal road when
1 answer
704 views
i want to make a chart on mathematicians
1 answer
469 views
Answers (9)
Very nice 😊 I m very happy about that
U= (-3/4)x-7/3 Thus a perfect negative correlation between u and x So correlation between u and y= (-0.6*(-3/4)/(-3/4)= 0.6
ntyjhyt
yes
siddharth sharma why are you taking taking tail of train as 3u
mein gawar hu mujhe nahi ata
The normal stresses at a certain point in a body are 80MPa tension and 50Mpa compression. There are also shear stresses across the plane of tension and compression equal to 30MPa.Calculate the maximum direct stress and maximum shear stress in the material.
Factor the following polynomial completely. -x2y2 + x4 + 9y2 - 9x2
solve by molarity =no. of moles divide by volume in litres....... so let the mass be in x grms... then : 2.50*0.630=x grms so, x grms of KCl =1.575 grams is the answer
