Waves — Physics STD 11 Science — Question

For finite change in linear momentum in short interval of time force acting on a body is inversely proportional to ________.

What will be the angle formed between the directions of velocity and acceleration of the particle at the highest point of the path?

Suppose a charged particle moves with a velocity v near a wire carrying an electric current. A magnetic force, therefore, acts on it. If the same particle is seen from a frame moving with velocity v in the same direction, the charge will be found at rest. Will the magnetic force become zero in this frame? Will the magnetic field become zero in this frame?

State the number of significant figures in the following:
2.64 × 10²⁴kg

A satellite revolving around earth loses height. How will its time period be changed?

What will be the work done by force of gravity in lifting a 10 kg mass to a height of 10 m ?

Can the dip at a place be zero? 90°?

For the above problem, the direction of the gravitational intensity at an arbitrary point P is indicated by the arrow (i) d, (ii) e, (iii) f, (iv) g.

of the three Young's modulus of elasticity, Bulk modulus and shear modulus is possible in all the three states of matter (solid, liquid and gas)?