Thursday

April 17, 2014

April 17, 2014

Total # Posts: 22

**chemistry**

if air contains78% of nitrogen by volume what is the solubility nitrogen in water at 25 degree celcius?

**maths**

The simplified form of the complex no. (1-i/2 2i) (1/-2-2i) is.....?

**maths**

A box contains 12 bulbs with 3 defective ones. If two bulbs are drawn from the box together.what is the probability that a)both bulbs are defetive b)both are non defective c)one bulb is defective?

**maths**

The mean grade of 10 students was 72.if 2 of the students with grades of 53,75 are cancelled. What should be the mean grade of the remaining?

**physics**

An aircraft flying at a steady velocity of 70m/s eastwards at height of 800m drops a package of supplies a)express the initial velocity of the package as vector. B)how long will it take for the package to reach the ground? C)how fast will it be going as it lands?(answer in vec...

**physics**

A boat takes 4 min. to cross a river 90m wide directly when there is no current & 5min. When there is current. find the velocity of the current.

**maths**

Show that the equation of a line 4x - 3y 4

**maths**

Show that the equation of a line 4x-3y 4

**maths**

Show that the equation of a line 4x-3y 4

**maths**

The equation is y=2x^2 -12x +20

**maths**

What is the vertex,focus,directrix of the equation y

**maths**

What is the equation of hyperbola whose foci at F(-8,0) and length of trasverse axis is 6?

**maths**

There is addition sign b/n 4x^2 + 9y^2

**maths**

What is the centre of the equation 4x^2 9y^2 - 32x 36y 11

**maths**

What is the equation of hyperbola whose foci at f(-8,0) & length of transverse axis is 6?

**Chemistry**

Please Make it clear!

**Physics**

A cart on an airtrack is moving at 0.5m/s.when the air is suddenly turned off the cart comes to rest after traveling 1m the experiment repeated but now the cart is moving at 1m/s when turned off .how far does the cart travel the cart travel before coming to rest?

**Physics**

An object moving with uniform acceleration has a velocity of 12m/s in the +ve x-direction,when its x-coordinate 3cm.if its x-coordinate 2sec. later is -5cm ,what is the acceleration?

**Physics**

The sum & difference of two non-zero vectors Ä & B are equal in magnitude.what can you conclude about these vectors?why?

**English Speech**

Just it is dif.to understand..My voice is v.i.p(very important),the reason behind is....

**Physics**

A car accelerates steadly from zero to 30m/s in a distance d & a time t, another car takes a time 3t to accelerate steadly from stationary to the same final velocity.what distance does the second car cover during the new the new acceleration?

**Math - Urgent!!!**

The length of transverse axis is 2a

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