How many stars in milky way?
1 2 3 4 5 6 7 ?
acc. to series the ans. is 8
3.20 b) Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of (iii) 6 Ω
Attach them in series
Question 6. Let ∗ be the binary operation on N given by a ∗ b = L.C.M. of a and b. Find
(v) Which elements of N are invertible for the operation ∗?
Who noticed the deflection of the compass needle every time the current was passed through the wire? When an electric current flows through a wire, it behaves like a magnet.
what is the difference between the two ?
pressure inside a liquid jet in excess of atmostpheric pressure . for example if aglass tube of samll diameter is partially immersed in water , the water will wet the surface of the tube ant it will rise in the tube to some height above the normal water surface . In this case, the water surface is concave upward.
In this collision
Coefficient of restitution 0 < e < 1
The loss in kinetic energy appears in other forms, such as heat, sound etc.
Ex- Collision between two billiard balls. All majority of collision belong to this category.
in inelastic collision k. e. is conserved
Intrinsic semiconductors are a pure form of semiconductors. Extrinsic semiconductors are obtained when an impurity is added to an intrinsic semiconductor.
Both are active, but O is more active w.r.t. N due to its high electronegativity[ En(O) = 3.5 & En(N) = 3.0 ]. Hence, N is more stable w.r.t. O
A massless rope is fixed at one end as shown in fig. Two boys of masses 40kg and 60kg are moving along the rope. The former climbing up with an accelaration of while later coming down with constant velocity of . The tension at fixed support will be (g=)
CTSE results will be out very soon !!!
Physics has many definitions. In simple words Physics is branch of science concerned with the nature and properties of matter and energy
You just finished Kinematics
Time (T), velocity (C) and angular momentum (h) are chosen as fundamental quantities instead of mass, length and time. In terms of these, the dimensions of mass would be :