# Sanjay

Popular questions and responses by Sanjay-
## Chemistry

Which radioactive sample would contain the greatest remaining mass of the radioactive isotope after 10 years? A. 2.0 grams of 198 Au B. 2.0 grams of 42 K C. 4.0 grams of 32 P D. 4.0 grams of 60 Co By the way the numbers next to the elements are their

*asked on March 3, 2007* -
## maths

Given that root 2 is a zero of the cubic polynomial 6x3+2x2-10x-4root2, find its other two zeroes

*asked on July 5, 2015* -
## Maths

Under root x+ under root x up to infinite time =6 find x

*asked on August 11, 2017* -
## maths

Four bells tolls at an interval of 8,12,15 &18 second a respectively. How many times will they toll together in one hour excluding the one at the start?

*asked on September 18, 2015* -
## math

The length of Pauloβs lunch break follows a normal distribution with mean ΞΌ minutes and standard deviation 5 minutes. On one day in four, on average, his lunch break lasts for more than 52 minutes. Find the value of ΞΌ.

*asked on February 13, 2014* -
## maths

If one of the zeroes of the cubic polynomial x3+ax2+bx+c is -1 then the product of the other two zeroes is -------(A) b -a +1 (B) b-a-1 (C) a-b+1 (D) a-b-1

*asked on July 6, 2015* -
## Probability

Let π and π be independent positive random variables. Let π=π/π. In what follows, all occurrences of π₯, π¦, π§ are assumed to be positive numbers. 1. Suppose that π and π are discrete, with known PMFs, ππ and ππ.

*asked on April 19, 2020* -
## Maths

9^x+2 - 6* 3^x+1= 0 find x

*asked on August 9, 2017* -
## science

How many sex chromosomes are found in the reproductive cells of human being?

*asked on March 13, 2015* -
## calculus

A particle is moving along the curve below. y = sqrt(x) As the particle passes through the point (4,2), its x-coordinate increases at a rate of 4 cm/s. How fast is the distance from the particle to the origin changing at this instant?

*asked on October 26, 2010* -
## Chemistry

What will happen if an iron spoon is used to stir an AgCl solution?

*asked on September 18, 2018* -
## Maths

Please show the method of showing root 42 on number line.

*asked on August 16, 2017* -
## Maths

9^x+2 - 6* 3^x+1= 0 find x Answer earlier I got confused

*asked on August 11, 2017* -
## science

The focal length of a concave mirror, that produces four times larger real image of an object placed at 5 cm distance from the mirror, is------

*asked on July 19, 2015* -
## chemistry

Treatment with sodium borohydride converts aldosterone A in to an optically inactive alditol. Ruff degradation of A from B, whose alditol is optically inactive. Ruff degradation of B from D - glycerol dehydration. Identify A and B

*asked on July 7, 2015* -
## maths

Given that^2 is a zero of the cubic polynomial 6x3+2x2-10x-4^2, find its other two zeroes

*asked on July 5, 2015* -
## science

A wire of resistance 12 ohm per metre is bent to form a complete circle of radius 10 c.m.the resistance between its two diametrically opposite point A and B

*asked on December 26, 2014* -
## Chemistry

Will there be a reaction if a magnesium strip is placed in a solution containing Zn2+ ions?

*asked on September 18, 2018* -
## math

12. IF 1/SinA+1/CosA=1/SinB+1/CosB ,PROVE THAT: Cot{(A+B)/2}=TanA.TanB

*asked on March 8, 2018* -
## Maths

(a^2 - b^2) sin theta+ 2abcos thetha= a^2 + b^2 then find tan theta

*asked on July 10, 2017* -
## Algebra 2

Let f(x) = 3x^2 β x + 2 and g(x) = 5x^2 β 1. Find f(g(x)). Show each step of your work. I got 75x^4 -35x +6 If that is wrong can you correct me. Thank you!

*asked on April 8, 2017* -
## Maths

What is the probability of a question (mcq)you are writing now to get 1 Mark out of it.

*asked on March 18, 2017* -
## physics

3 charges are placed in a equilateralABC of side l.a point is kept between the sideBc such that the chargeA remains.find the magnitude and sign of the point charge

*asked on March 8, 2017* -
## maths

Line AB touches circle (p,12) at A and circle (Q, 5) at B. If PQ = 25 and A and B are either side of line PQ then AB=-

*asked on March 7, 2017* -
## maths

The party of kejriwal walks from gwalior to Bhuvneshwar. They first walk straight for 150km and then turn 45 ddegree towards Varansi and again go straight for 120km how for have they travelled from the initial place

*asked on February 3, 2017* -
## maths

60 students appear for examination. Out of which 1/15 th were failed and total percent of students who got more than 90% were 0.125% .then if 1 student randomly choose find the probability of getting that students to be passed

*asked on December 10, 2015* -
## maths

Arrange 10 people in 5 rows in such a manner that there are 4 people in each row

*asked on September 16, 2015* -
## chemistry

Treatment with sodium borohydride converts aldosterone A in to an optically inactive alditol. Ruff degradation of A from B, whose alditol is optically inactive. Ruff degradation of B from D - glycerol dehydration. Identify A and B. Please help urgently.

*asked on July 8, 2015* -
## maths

The number of polynomial having zeroes as -2 and 5 is --------(A) 1 (B)2 (C) 3 (D) more than 3

*asked on July 6, 2015* -
## maths

For which values of a and b , are the zeroes of q(x)=x3+ 2x2+a also the zeroes of the polynomial p (x)= x5 -x4-4x3+3x2+3x+b? Which zeroes of p (x) are not the zeroes of q (x)?

*asked on July 5, 2015* -
## maths

When 6 boys were admitted and 6 girls left the %of boys increased from 60% to 75% . Find the original no. Of boys and girls in the clasa

*asked on July 5, 2015* -
## maths

If lemon is divided into four equal parts then find the total surface area of one part of lemon

*asked on December 25, 2014* -
## math

Fill up the grid with the help of clues given below-

*asked on June 2, 2014* -
## Science

Express mass of the Earth in unit of M. Take ME = 6 x 1024kg. The apparent magnitude of the sun is Β£Β‘ 26.81 and that of another star isΒ£Β‘1.81. How much brighter the sun is with respect to that star ?

*asked on December 2, 2012* -
## chemistry

how many liters of carbon dioxide produce when 6kg sodiumcarbonate react with excess hcl at 37 c

*asked on December 11, 2011* -
## Gr.12 Chemistry

What will happen if an iron spoon is used to stir an AgCl solution?

*asked on September 18, 2018* -
## Maths

A tetrahedeon is a four sided object .each side or face is an equilateral rriangle . the number 1,2,3&4 are used to number the different faces. A trial consist of rolling the retrahedron and reading the number that face down then p(4) is____

*asked on July 31, 2018* -
## Maths

If the sum of circumferences of two circles wirh radii r1 & r2 is equal to the circumference of a circle of radius r, then what is true 1 r1+ r2 = r or sum of their squares= r2

*asked on December 26, 2017* -
## Maths

If a cone of radius r and slant height 2r is surmounted on a cone having radius 2r and slant height 4r then find total surface area of solid

*asked on December 8, 2017* -
## Maths

if a spherical medicine with radius r is broken down in to 1000 spherical small tablets then the css of original spherical medicine will become---- times

*asked on November 22, 2017* -
## Maths

The diameter and length of a roller are 84cm and 120 cm respectively in how many revolution can the roller level the playground of area 1584 Sq meter

*asked on August 28, 2017* -
## Maths

In trapezium ABCD AB Parallel to CD diagonal intersect at O(AC and BD)how can we prove that AOD and COD are similar

*asked on August 25, 2017* -
## Maths

(Cos/1+cosec) + (sin/ 1+cot ) = sin + cos prove that

*asked on August 19, 2017* -
## Maths

What is added to 5,9,17,27 to be in proportion

*asked on August 11, 2017* -
## Maths

Cos^4(ΞΈ)/cos^2(Ξ±) + sin^4(ΞΈ)/ sin^2(Ξ±)=1 Prove that cos^4 alpha/cos^ thetha + sin^4alpha/ sin^2thetha= 1

*asked on July 5, 2017* -
## Maths

Cos4theta/cos2alpha + sin4theta/ sin2alpha=1 prove that

*asked on July 4, 2017* -
## Science

Which is more harmful tannin or caffeine?

*asked on March 30, 2017* -
## Math

Find the three rational number of 5 and -2

*asked on March 23, 2017* -
## Maths

The party of kejriwal walks from gwalior to Bhuvneshwar. They first walk straight for 150km and then turn 45 ddegree towards Varansi and again go straight for 120km how for have they travelled from the initial place. Please show the method.

*asked on March 23, 2017* -
## Maths

In a cricket, a bowler throws a ball at the height 5m. A ball bounces on the pitch at 8m away. A wicket keeper catches this ball from 5m away at the height of 8m. How much distance the ball has covered after pitch. Please show the method.

*asked on March 23, 2017* -
## Maths

(1+a+b+c)(1+ 1/a +1/b +1/c )= 16 then find a+b+c. Show the method

*asked on March 23, 2017* -
## Maths

10 marks add to each of the 12th standard students marks due to poor result which of the following measure does not change? (A)mean (b) median (c) mode(d) standard deviation

*asked on March 19, 2017* -
## Maths

At present what you are answering my question ,what is the probability of getting 1 out of 1 marks

*asked on March 18, 2017* -
## Maths

What is the probability of the question that you are answering To get 1Mark out of 1mark in that question.

*asked on March 18, 2017* -
## Maths

please explain this mcq- According to Euclid's division of Lemma, for a and 5 if a=5q+r is unique then r = ...... is not possible. A. 0 B. 2 C. 4 D. 6

*asked on March 18, 2017* -
## Science

If 5 equal pieces of 25 ohm (omega) is joined in parallel then what is the equivalent resistance of it. Is it 5 or 1.please urgent

*asked on March 17, 2017* -
## maths

Angle AOP is an acute angle .circle (O, OP ) is passing from A on the circle. Line l touches at A. N is perpendicular on line l from P. If AN =15 PN =9 then radius=-----

*asked on March 11, 2017* -
## Science

Which tunable property is the great thrust in biological and medical sciences? A) physical B) chemical C) biological D) none

*asked on March 11, 2017* -
## Science

What is the increment in power if current increases by 1% and resistance remain constant

*asked on March 11, 2017* -
## maths

A wire from a square of area 324 cm2. If A wire from a semicircle then area becomes ------

*asked on March 7, 2017* -
## maths

Angle AOP is an acute angle .circle (O, OP ) is passing from A. Line l touches at A. No is perpendicular on line l from P. If AN =15 PN =9 then radius=-----

*asked on March 7, 2017* -
## maths

A two digit number is k times the sum of the digit. By interchanging the digits, Find the number is how many times its sum of the digits. Explain method

*asked on February 28, 2017* -
## maths

AB touches circle (P, 12) at A and circle (Q, 5) at B. If PQ= 25 and A&B are either side of PQ tthen AB= -------- please explain with diagram

*asked on February 28, 2017* -
## maths

The measure of the side of an equilateral triangle is 6cm. Then area of circle touching all three sides of given triangle is ------cm2 (a) pie (b) 3 pie (c) 12 pie (d) 36pie

*asked on February 25, 2017* -
## maths

Angle of elevation of sun from earth is called? (A) sunset (b) sun's altitude (c) sunrise (d) none

*asked on February 25, 2017* -
## maths

In triangle ABC a=8 b=9 c=7 then what is radius (a) 2.5 (b)3.5 (c)4.5 (d) 1.5

*asked on February 25, 2017* -
## maths

How are the angles to be constructed in distinct half plane of a line segment for division of line segment? (A) obtuse (B) acute (c)right (d) A OR B

*asked on February 25, 2017* -
## maths

Find two natural numbers in ratio 5:7 such that their l.c.m.is 120

*asked on February 22, 2017* -
## maths

In a cricket, a bowler throws a ball at the height 5m. A ball bounces on the pitch at 8m away. A wicket keeper catches this ball from 5m away at the height of 8m. How much distance the ball has covered after pitch

*asked on February 3, 2017* -
## maths

Find all possible pairs of two natural numbers whose sum is 77 and their g.c.f is 7

*asked on February 3, 2017* -
## maths

Find two natural numbers in ratio 5:7 such that their lives. L C.m. is 210

*asked on February 3, 2017* -
## maths

If six cubes of 10 cm edge are joined edged to edge then the surface area of the resulting cuboid is ------please show method

*asked on January 3, 2017* -
## maths

In the green rectangular board of measure 20Γ15 ,there is a white square with side 10 units. In the square, there is a orange right angle triangle of measure 3Γ4Γ5 . Find the probability that a dart strikes in orange portion

*asked on January 2, 2017* -
## Maths

If the angles of triangle ABC are in increasing order and in an arithmetic progression then find sinB

*asked on December 29, 2016* -
## chemistry

In equation He +Br2------>2HI why chemical rate of Br2 is taken as 1/2 . It's a reversible reaction. Please explain in detail. While H2 rate is taken as 1 why?

*asked on December 24, 2016* -
## maths

If the graph of f (x)=ax2+bx+c then how do we know the value of b from the graph. We will come to know the value of a & c by the shape of the graph like open upward or downward but what about 'b' explain

*asked on December 21, 2016* -
## maths

If a spherical medicine with radius R is broken down into 1000 spherical small tablets then the surface area of original medicine will become ----------times. Please show method how to do

*asked on December 16, 2016* -
## maths

Find all possible pairs of two natural numbers whose sum is 77 and their g.c.d. is 7

*asked on December 8, 2016* -
## maths

Find all possible pairs of two natural numbers whose sum is 77 and their g.c.d. is 7

*asked on December 6, 2016* -
## maths

Find all possible pairs of two natural numbers whose sum is 77 and their g.c.d. is 7

*asked on December 6, 2016* -
## maths

Find the two natural no in the ratio of 5:7 such that it's lam is 210 with method

*asked on November 23, 2016* -
## chemistry

What is n+1+m for 4p orbital and what is n+l+m for 4p orbital

*asked on October 2, 2016* -
## maths

How many circles are there whose central lines on X axis and passes through origin?

*asked on September 24, 2016* -
## maths

If mewi=xi-25/10 and sigma fiui=20 and sigma fi=25 what is the mean?

*asked on September 23, 2016* -
## Math

Rushil and Timmy shared a sum of money in the ratio 3:4. If Timmy received R 6 more than Rushil, find the total sum of money shared between them.

*asked on August 20, 2016* -
## statics

A former student of ENG8101 wishes to weigh him/herself but only has access to a scale A with capacity limited to 400 N and a small 80-N spring dynamometer B. With the rig shown, he/she discovers that when he/she exerts a pull on the rope so that B

*asked on April 9, 2016* -
## Math

66:36::18:?

*asked on March 26, 2016* -
## physics

A horizontal, straight wire carrying 12 A current from east to west is in the earth's magnetic field B. At this place, B is parallel to the surface of the earth, points north and its magnitude is 0.04mT. Determine the Magnetic Force on 1 m length of wire.

*asked on March 23, 2016* -
## maths

If the circumference of a base of a hemisphere is 2 pie then it's volume is ---' cm3

*asked on March 12, 2016* -
## science

Metal obtained by chemical reduction is it iron or aluminium?

*asked on March 8, 2016* -
## English

Are your guides kind to you? l asked (questions tag) (A) are they? (B) aren't they?

*asked on March 8, 2016* -
## maths

Mr. Ahmed age is 47 yes and sani's age is 15 years .In how many years will Ahmed 's age be double of Sani's age?

*asked on March 3, 2016* -
## maths

If 6 cubes of 10 cm edge are joined edged to edge then the surface area of the resulting cuboid is ----

*asked on February 24, 2016* -
## English

I m silver and exact. I have no preconceptions. Whatever I see I swallow immediately. Just as it is, unmisted by love ordislike. I m not cruel, only truthful-.The eye of a llittle god, four cornered.Most of the time I meditate on the opposite wall.It is

*asked on February 22, 2016* -
## science

Two wires if the same metal and of the same dia. And same length are connected in series 1st n then parallel, the ratio of energy produced during series n parallel connection will be ..... A. 1:2 B. 2:1 C. 1:4 D. 4:1

*asked on February 11, 2016* -
## science

Two wires if the same metal and of the same dia. And same length are connected in series 1st n then parallel, the ratio of energy produced during series n parallel connection will be ..... A. 1:2 B. 2:1 C. 1:4 D. 4:1

*asked on February 10, 2016* -
## science

Two wires if the same metal and of the same dia. And same length are connected in series 1st n then parallel, the ratio of energy produced during series n parallel connection will be ..... A. 1:2 B. 2:1 C. 1:4 D. 4:1

*asked on February 10, 2016* -
## maths

In triangle PQR QM perpendicular to PR, RN perpendicular to PQR, H is ortocentre of triangle PQR then PNHM is -----

*asked on February 6, 2016* -
## maths

In triangle PQR QM perpendicular to PR, RN perpendicular to PQR, H is ortocentre of triangle PQR then PNHM is -----

*asked on February 4, 2016* -
## maths

The area of the triangle made by the line x/a + y/b = 1 with the coordinate axis is ------how ?

*asked on February 4, 2016*

## Pages

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