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Q. A swimmer wishes to cross a 500 m wide river flowing at 5 km/hr. His speed with respect to water is 3 km/hr.

a) if he heads in a direction making an angle

with the flow, find the time he takes to cross river. (ans: 10 min/sin

)

b) find the minimum drift.

Plzzz give detailed sol. with diagram.

Can u plz also tell me the thinking and concept behind these probs???

Q. A swimmer wishes to cross a 500 m wide river flowing at 5 km/hr. His speed with respect to water is 3 km/hr.

a) if he heads in a direction making an angle

with the flow, find the time he takes to cross river. (ans: 10 min/sin

)

b) find the minimum drift.

Plzzz give detailed sol. with diagram.

SALUTES TO ALL ACCEPTABLE ANSWERS.

Newspaper editor and political commentator Henry

Louis Mencken was a force of nature, brushing aside

all objects animal and mineral in his headlong rush

to the publicity that surely awaited him. He seized

5 each day, shook it to within an inch of its life, and

then gaily went on to the next. No matter where his

writing appeared, it was quoted widely, his pungently

outspoken opinions debated hotly. Nobody else could

make so many people so angry, or make so many others

10 l augh so hard.

9. In lines 4-5, the words ?seized? and ?shook? help

establish which aspect of Mencken?s personality?

(A) His code of honor

(B) His sense of humor

(C) His vindictiveness

(D) His intensity

(E) His petulance

10. The public response described in lines 6-8 most

strongly suggests that Mencken?s writings were

(A) authoritative

(B) controversial

(C) arrogant

(D) informal

(E) frivolous

Max Value= (1²+ 1²)^0.5=

2 at x=pi/4

Min value= -

2

can u give me any example of a eudiometry prob , so that i can explain using that example??

isn't 8 the correct answer??

U should first click on "Ask Expert Panel" tab , select the topic of ur ques. and then simply post it. u can post max. 3 ques to experts in one day.

rate if useful.

Regarding the k-method, if u could tell me about it, i will try doing this by that method.

n-factor for this reaction will be 8.

As KOH will neither reduce or oxidise,

I₂ ======= 2I0₃^-+ 12H⁺ + 10 e^-

and

I₂+ 2e^- ========2I^-

Therefore , net change of electron per mole will be 8.

Plzzz rate me if the above was useful.

As f{f(n)}=3n , f(n+1)>f(n)

f(n)=

3 n

Thus,

f(1458)=1458

3

Therefore,

d)none option is correct.

Sorry, by mistake i typed -5/18 and 5/18 instaed of typing -5/16 and 5/16.

Let \/(4x-1)

----------- = y

V(4x+1)

y+1/y=8/3

On solving this eq., u will get y=3, -1/3

putting y=3 in our assumption will give x=-5/18,which is not possible as it will make sqrt negative.

putting y=-1/3, and squaring both sides will give x=5/18.

Plzzz rate me for my answer.

There will be 120 numbers.

On ones digit place(when all numbers are listed for addition) ,

there will be 24 5's , 24 4's, 24 3's , 24 2's, 24 1's .

There sum will be 24(15)=360

Now, this will repeat for ten's place too and further...

No.s

.

-------------------------

Sum 3999960

As u know , the sum of digits at every place (360), u can carry 36 to the next place and find the sum by normal addition.

Plzzzzzzz rate me if this was helpful.

Then, the simplest and fastest method of doing this is as follows:

Find the co-ordinates (-b/2a,-d/4a) of the polynomial ax^2+bx+c, where D is the Discriminant.

This co-ordinate will be the vertex of the parabola of the polnomial, and the rest of the graph will be symmetric about this point.

The graph could be drawn by taking one pt. ahead(x-coordinate) of the point

(-b/2a,-d/4a) and find the y coordinate, and one point before.

Drawing a smooth curve will give the graph.

Plzzzz rate me if this was useful.

As one cordinate is (sin60,0),and p lies withinn the triangle

<60.

As another coordinate is (0,cos30),and p lies withinn the triangle

theta>30.

{Draw the figure after drawing x and y-axis, u will get the logic.}