Can you please answer the following question?
Consider the charges q,q and -q placed at the vertices of an equilateral triangle. What is the force on each charge?
I actually didn’t understand the total force on charge -q at the vertex C of the equilateral triangle. How is it equal to root3Fn where n is the unit vector along the direction bisecting the angle BCA (Why?).
Thejaswini posted the question
Why is it dangerous to stand in the upper deck of a double decker bus?
What physical phenomenon is there that a black holehas a high gravity?
Black holes and the LHC: A review (physicsforme.wordpress.com)
- A Black Hole Brings New Stars To Life (forbes.com)
- Astronomers put forward new theory on size of black holes (naturenplanet.com)
A glass ball at -10 degrees C is placed in 500 ml of water at 20 degrees C. The final temp is 15 degrees C.
A. How much heat is lost by the water
B. what is the heat capacity of the water
C. How much heat is gained by the glass ball
D. What is the heat capacity of the glass ball
E. what is the ratio of the heat capacities of the water and the glass ball
F. What is the ratio of the temp changes of the water and glass ball
G. How are the answers to e and f related
I heard that photon is its own antiparticle. If so, what is the different between these two photons
Photons also have their antiparticles, but antiphotons are photons themselves.
The following links will help you know the matter in details.
- A tunnel! Perfect for a game of Photons and Bosons. Game… (lesstraveledby.tumblr.com)
- Reblogg (geosciencebigpicture.com)
A galvanometer can be converted to ammeter by connecting a low resistance, called shunt in parallel with it. If a galvanometer of resistance 45 Ω is shunted by a resistance of 5 Ω what fraction of main current passes through the Galvanometer? What is the current which flows through the shunt?
- A question from Potentiometer (asked in Board Exam) (askphysics.com)
- CBSE Class 12 Syllabus for 2013 Board Exam (physicsfans.com)