Which of the following is an example of an impact

Let the electric field part of an electromagnetic wave is E = {(2.3 N/C) cos [(1.2 rad/m) y + (2.4 × 10⁸ rad/s)t]} î.

Two capacitors of 6 µF and 3 µF are connected in series and a potential difference of 90 V is applied. The energy stored in the system is:

The material which can be deformed permanently by heat and pressure is called a:

A capacitor of 4 µF is charged to 100 V. It is then connected across an uncharged 2 µF capacitor. Final common voltage is:

A body of mass 3 kg is acted upon by two perpendicular forces 9 N and 12 N. Find the resultant of two forces and the acceleration of the body.

The electric and magnetic fields of an electromagnetic wave are _____________

A soap bubble expands isothermally and its radius doubles. The work done by surface tension during this expansion is: 

__________ is the metal used for making the filament of the light bulb.