The mass of a cube has error of 2% and the length of its edge has error of 1%. What will be the maximum percentage error in calculation of its density.
1 Answers
Talk Doctor Online in Bissoy App
Equal volumes of 30% by mass of `H_(2)SO_(4)` (density 1.218g `mL^(-1))` and of `H_(2)SO_(4)` (density 1.610 g mL^(-1)) are mixe. If the density of te
Calculation of molarity of the solution Let V mL of each sample of `H_(2)SO_(4)` bemixed for 30% `H_(2)SO_(4)` Mass of `H_(2)SO_(4)`=30g ,Mass of solution=100 g `" Volume of solution"=("Mass of soulution")/("Density")=...
2 Answers 1 views
What will be the total flux through the faces of the cube, with side of length a if a charge q is placed at (a) A : a corner of the cube (b) B : mid-p
(a). There are eight corners in a cube so, total charge for the cube is `(q)/(8)`. ltbr. Thus, electric flux at `A=(q)/(8epsi_(0))` ltb rgt (b) When the charge q is...
2 Answers 1 views
The pressure on a square plate is measured by measureing the force on the plate and the percentage error of measurement of force and length are respec
`P=(F)/(A)=(F)/(L^(2))` For max. error `(DeltaP)/(P)=(DeltaF)/(F)+(2DeltaL)/(L)=4%+2(2%)=8%`
2 Answers 1 views
The error in measuring the side of a cube is `+- 1%`. The error in the calculation of the volume of the cube will be about
Volume of cube V- (side `a)^(3)` `therefore V=a^(3)`. Take log and differentiate. `(DeltaV)/(V)=3(Deltaa/(a)=3(+-+-1%)=+-3%`
2 Answers 1 views
A body of density d is counterpoised by Mg of weights of density `d_1` in air of density d. Then the true mass of the body is
Correct Answer - D Let `M_(0)` = mass of body in vacuum. Apparent weight of the body in air = Apparent weight of standard weights in air implies Actual weight -...
2 Answers 1 views
Suppose we have a cube of `1.00 cm` length. It is cut in all three directions, so as to produce eight cubes, each `0.50 cm` on edge length. Then suppo
We find that every division in two equal halves also reduces the size of edge lengths to one half. In first subdivision `1` cm is reduceds to `0.5 cm=1/2 cm`....
2 Answers 1 views
A hydrogen atom at rest de-excites from n = 2 state to n = 1 state. Calculate the percentage error in calculation of momentum of photon if recoil of a
Correct Answer - `5.4 xx 10^(-7) %`
2 Answers 2 views
A copper wire of length 5 cm carries a current of density `j = 1 A (mm)^(-2)`. The density and molar mass of copper are `9000 Kg m^(-3) and 63 gmol^(-
Correct Answer - `8 xx 10^(4)km`
2 Answers 1 views
A charge Q is uniformly distributed over a rod of length `l`. Consider a hypothetical cube of edge `l` with the centre of the cube at one end of the r
Correct Answer - `[(Q)/(2 in_(0))]`
2 Answers 1 views
Balloon of volume 800 centimetre cube is filled with hydrogen gas of density 9 x 10 raise to power minus 5 gram per centimetre cube.
Volume of balloon = V = 800 cm3 Density of hydrogen gas = pH = 9 x 10-5 g cm-3 Weight of empty balloon = 0.3 gf Density of air = ρa = 1.3...
2 Answers 3 views