What are polyatomic ions? Give examples.| question and answer !
Question:- What are polyatomic ions? Give examples Answer:- When two or more atoms combine together and behave like one entity w...Read More
Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts
What is meant by the term chemical formula? | question and answer !
Question:- What is meant by the term chemical formula? Answer:- The chemical formula of a compound is the symbolic representatio...Read More
Why is it not possible to see an atom with naked eyes? | question and answer !
Question:- Why is it not possible to see an atom with naked eyes? Answer:- The size of an atom is very very small. Further atoms...Read More
How would you confirm that a colourless liquid given to you is pure water? | quesition and answer !
Question:- How would you confirm that a colourless liquid given to you is pure water? Answer:- Every liquid has a characteristic...Read More
List the points of differences between homogeneous and heterogeneous mixtures. | question and answer !
Question:- List the points of differences between homogeneous and heterogeneous mixtures. Answer:- Homogeneous mixture It ha...Read More
What is meant by a pre substance? | question and answer !
Quesion:- What is meant by a pre substance? Answer:- A pure substance consists of a single type of particles and it cannot be se...Read More
What type of clothes should we wear in summer? | question and answer !
Question:- What type of clothes should we wear in summer? Answer:- We should wear cotton clothes during summer season. Because d...Read More
Why are we able to sip hot tea or milk faster from a saucer rather than a cup? | queation and answer !
Question:- Why are we able to sip hot tea or milk faster from a saucer rather than a cup? Answer:- Hot tea or milk cover larger ...Read More
Why does our palm feel cold when we put some acetone or petrol or perfume on it? | quesiton and answer !
Question:- Why does our palm feel cold when we put some acetone or petrol or perfume on it? Answer:- Both acetone or perfume are...Read More
How does the water kept in an earthen pot (matka) become cool during summer? | question and answer !
Question:- How does the water kept in an earthen pot (matka) become cool during summer? Answer:- Earthen pot becomes cool during...Read More
Why does a desert cooler cool better on a hot dry day? | question and answer !
Question:- Why does a desert cooler cool better on a hot dry day? Answer:- On a hot dry day, there is high temperature and low h...Read More
Consider an arbitrary electrostatic field configuration. A small test charge is placed at a null point (i.e., where E = 0) of the configuration. Show that the equilibrium of the test charge is necessarily unstable.(b) Verify this result for the simple configuration of two charges of the same magnitude and sign placed a certain distance apart. | question and answer !
Question:- (a) Consider an arbitrary electrostatic field configuration. A small test charge is placed at a null point (i.e., where E...Read More
Two insulated charged copper spheres A and B have their centers separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is 6.5 x 10 power-7 C ? The radii of A and B are negligible compared to the distance of separation. (b) What is the force of repulsion if each sphere is charged double the above amount, and the distance between them is halved? | question and answer !
Question:-- (a) Two insulated charged copper spheres A and B have their centers separated by a distance of 50 cm. What is the mutual...Read More
A polythene piece rubbed with wool is found to have a negative charge of 3 x 10 power-7 C. (a) Estimate the number of electrons transferred (from which to which) (b) Is there a transfer of mass from wool to polythene? | question and answer !
Question:- A polythene piece rubbed with wool is found to have a negative charge of 3 x 10 power-7 C. (a) Estimate the number of e...Read More
An electric dipole with dipole moment 4 x 10 power -9 Cm is aligned at 30 degree with the direction of a uniform electric field of magnitude 5 x 10 power 4 NC inverse -1. Calculate the magnitude of the torque acting on the dipole. | question and answer !
Question :- An electric dipole with dipole moment 4 x 10 power -9 Cm is aligned at 30 degree with the direction of a uniform electri...Read More
A system has two charges qA = 2.5 10 power -7 C and qB = 2.5 10 power -7C located at points A: 0,0, -15cm and B: 0,0, +15cm, respectively. What are the total charge and electric dipole moment of the system? | question and answer !
Question :- A system has two charges qA = 2.5 10 power -7 C and qB = 2.5 10 power -7C located at points A: 0,0, -15cm and B: 0,0, +1...Read More
shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio? | question and answer !
Question :- shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which pa...Read More
What is the net flux of the uniform electric field of Exercise15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes? | question and answer !
Question :- What is the net flux of the uniform electric field of Exercise15 through a cube of side 20 cm oriented so that its fac...Read More
Two point charges qA = 3μC and qB = -3μC are located 20 cm apart in vacuum. (a) What is the electric field at the midpoint O of the line AB joining the two charges? (b) If a negative test charge of magnitude 1.5 10 power -9 C is placed at this point, what is the force experienced by the test charge? | question and answer !
Question :- Two point charges qA = 3μC and qB = -3μC are located 20 cm apart in vacuum. (a) What is the electric field at the mid...Read More
(a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not? (b) Explain why two field lines never cross each other at any point? | question and answer !
Question :- (a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not? (b) ...Read More
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