# Search results

1. ### Physics: Post your doubts here!

Isn't 0 the maximum? And it's formula is -GMm/r which implies that it should be negative right? Also. How are gravatational potential and potential energy related?
2. ### Physics: Post your doubts here!

Can electric potential energy be positive?
3. ### Physics: Post your doubts here!

What is the expression BqVsinx for?
4. ### Chemistry: Post your doubts here!

Could someone please explain the reaction between iodine and thiosulfate ions to me?
5. ### Chemistry: Post your doubts here!

The equation for the enthalpy of solution is. E= hydration energy - lattice energy so if the value of hydration energy is greater than the lattice energy then the enthalpy of solution will be positive. As a general rule, the more positive the enthalpy of solution is, the higher is the...
6. ### Chemistry: Post your doubts here!

For which reactions will writing "reflux" not be appropriate? Are there marks for writing it as a condition for other organic reactions??
7. ### Mathematics: Post your doubts here!

Yeah what's the general equation for it? Is it the cross product of the position vector of any point on a plane and the direction vector? Isn't the direction of line l the same as the direction vector A?
8. ### Mathematics: Post your doubts here!

That's the normal to the plane right? How do you find it?
9. ### Mathematics: Post your doubts here!

A question from s1: A committee of 6 ppl, which must contain at least 4 men and at least 1 woman, is to be chosen from 10 men and 9 women. A) find the no of possible committed that include either Albert(man) or tracey(woman) but not both.
10. ### Notes for Physics, Chemistry, Biology and Computing

How would the existence of GM vitamin a enhanced rice reduce the efforts to tackle poverty?
11. ### Mathematics: Post your doubts here!

In s1, why is variance = [(sum of x2 + sum of y2)/ (x+y)] - (mean)2
12. ### Physics Practical NOTES!!! :)

Haven't you already given the exam?

Second one
14. ### Physics 12 GT

Yeah so in the parallel circuits there were 2 in one loop and 1 in the other so the total potential energy was 2V right? But them there were two more resistors (in series with each other) and if they were both equal to 3V the total pd could be 8V
15. ### Physics 12 GT

Wait wait gain in kinetic energy was equal to the loss in potential energy...and it lost 1/4th of its potential energy when it gained 1/4th of its kinetic energy so .5*4*4=8 and 1/4th of that is 2J which is equal to .5*2*2 so that's why I marked B
16. ### Physics 12 GT

I didn't understand that question at all...I think I marked the 800 one
17. ### Physics 12 GT

Yup me. Wait didnt the resistances add up to 8V when the PDs were 3V and 2V...the last resistor also had to be 3V and 3+3+2=8V no?
18. ### Physics 12 GT

I marked C the 10^6 one...the answer I was getting wasn't close to any of the answer choices! It was either C or D tho cause the other two were really small values
19. ### Physics 12 GT

Hey what about that strain question. The young modulus of the two objects were 5.0 Nm2- and 30.0 Nm2- I think and we had to find the total tensile stressor something
20. ### Physics 12 GT

Forget individual questions lol lets just hope our overalls good