Recent questions tagged q12

A number is divisible by 3,if the sum of its digits is divisible by

asked Oct 21, 2017 by priyanka.c

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The diagrams below, shown, regions of equipotentials : A positive charge is moved from A to B in each diagram.

asked Oct 10, 2017 by meena.p

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A particle of mass m is tied to a string of length L and whirled into a horizontal plan. If tension in the string is T then the speed of the particle will be :

asked Oct 8, 2017 by priyanka.c

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Prathik was playing football with his sister. If he ran 7 times faster than her, how many feet would he have run by the time she ran only 5 feet?

asked Oct 2, 2017 by priyanka.c

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28 hr. 36 min. 04 sec. $-$ 19 hr. 18 min. 09 sec.

asked Sep 25, 2017 by priyanka.c

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The population of a town is 198568. Out of them 45312 are men and 35678 are woman. Find the number of children in the town.

asked Sep 20, 2017 by priyanka.c

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Find the value of following expression (76÷4-4)x 6+((6x 7)-3)=

asked Sep 18, 2017 by priyanka.c

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Given

asked Sep 7, 2017 by priyanka.c

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Half of half a number is 17.5. What is the number

asked Sep 1, 2017 by priyanka.c

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Calculate the following percentage (100% of 100) - (90% of 40) + (50% of 30)

asked Aug 14, 2017 by priyanka.c

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asked Aug 8, 2017 by priyanka.c

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Half of half of a number is 12. Then what is the number?

asked Aug 4, 2017 by priyanka.c

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A $3.0 \;cm$ wire carrying of $10\;A$ is placed inside a solenoid perpendicular to its axis . The magnitude field inside the solenoid is given to be $0.27 \;T$. What is the direction of magnetic force on the wire ?

asked Jul 23, 2015 by meena.p

1 answer

Instellar space has an excellently weak magnetic field of the order of $10^{-12}\;T$ can such a weak field be of any significant consequence. Explain

asked Jul 10, 2015 by meena.p

1 answer

What conclusion can you draw from the following observation on a resistor made of allong magnanin ?Choose the correct alternative?

asked Jun 29, 2015 by meena.p

1 answer

The distance of the field point, on the equatorial place of a small electric dipole is halved . By what factor does the electric field due to the dipole charge ?

asked Apr 21, 2015 by meena.p

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The distance of the field point, on the equatorial place of a small electric dipole is halved . By what factor does the electric field due to the dipole charge ?

asked Apr 21, 2015 by meena.p

1 answer

Given the ellipse with equation $9x^2+25y^2=225$,find the eccentricity and foci.

asked Oct 9, 2014 by sreemathi.v

1 answer

To $500cm^3$ of water $3.0\times 10^{-3}$kg of acetic acid is added .If 2.3% of acetic acid is dissociated.What will be the depression of freezing point?$K_f$ and density of water are $1.86$K kg/mol and $0.997g/cm^3$ respectively.

asked Aug 6, 2014 by sreemathi.v

1 answer

A solution of $ 8 \%$ basic acid is to be diluted by adding $ 2 \%$ boic acid. Solution to it. The resulting mixture is to be more than $4 \%$ but less than $6 \%$ boric acid. If we have 640 litres of $8^{\circ} \%$ Solution , how many litres of $2 \%$ solution is to be added ?

asked Aug 5, 2014 by meena.p

1 answer

Calculate the wavelength of X-rays which produces a diffraction angle $2\theta$ equal to $16.80^{\large\circ}$ for a crystal.Assume first order diffraction with inter particle distance in crystal of 0.2 nm

asked Aug 1, 2014 by sreemathi.v

1 answer

Solve the system of inequalities graphically $x-2y \leq 3; 3x +4y \geq 12 ; x \geq 0 ; y \geq 1$

asked Jul 31, 2014 by meena.p

1 answer

Solve the inequality for real $x: \large\frac{1}{2} \bigg(\large\frac{3x}{5} +4 \bigg) $$ \geq \large\frac{1}{3} $$(x-6)$

asked Jul 25, 2014 by meena.p

1 answer

Find the equations of the hyperbola satisfying the given conditions : Foci $(\pm 3\sqrt 5 , 0)$, the latus rectum is of length $8$

asked Jul 21, 2014 by thanvigandhi_1

1 answer

Find the equation for the ellipse that satisfies the given conditions : Vertices $ (\pm 6, 0), foci (\pm 4, 0)$

asked Jul 18, 2014 by thanvigandhi_1

1 answer

Find the equation of the parabola that satisfies the given conditions : Vertex (0,0), passing through (5,2) and symmetric with respect to y-axis

asked Jul 15, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with radius $5$ whose centre lies on x-axis and passes through the point $(2,3)$.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

The mean life of a sample of 60 bulbs was 650 hours and the standard deviation was 8 hours. A second sample of 80 bulbs has a mean life of 660 hours and standard deviation 7 hours. Find the overall standard deviation.

asked Jul 4, 2014 by meena.p

1 answer

Find the equation of one of the sides of an isosceles right angled triangle whose hypotenuse is given by 3x + 4y = 4 and the opposite vertex of the hypotenuse is (2, 2).

asked Jul 1, 2014 by thanvigandhi_1

1 answer

Calculate the mean deviation about median for the age distribution of 100 persons given below.

asked Jun 26, 2014 by meena.p

1 answer

A coin is tossed .If the outcome is a head,a die is thrown.If the die shows up an even number,the die is thrown again.What is the sample space for the experiment.

asked Jun 26, 2014 by sreemathi.v

1 answer

If the $6^{th}$ term in the expansion of $\big(\large\frac{1}{x^{8/3}}+$$x^2\log _{10} x\big)^{8}$ is 5600 then the value of $x$ is

asked Jun 25, 2014 by sreemathi.v

1 answer

If $p$ is a real number and if the middle term in the expansion of $(\large\frac{p}{2}$$+2)^8$ is 1120.Find $p$

asked Jun 24, 2014 by sreemathi.v

1 answer

Find a positive value of m for which the coefficient of $x^2$ in the expansion of $(1+x)^m$ is $6$

asked Jun 23, 2014 by sreemathi.v

1 answer

Find $(x+1)^6+(x-1)^6$ Hence or otherwise evaluate $(\sqrt 2+1)^6+(\sqrt 2-1)^6$

asked Jun 23, 2014 by sreemathi.v

1 answer

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