Air breaks down and conducts charge as a spark if the electric field magnitude exceeds 3.00 ✕ 10^6 V/m. (a) Determine the maximum charge Qmax (in C) that can be stored on an air-filled parallel-plate capacitor with a plate area of 1.65 ✕ 10^−4 m2.

(b) A 68.0 µF air-filled parallel-plate capacitor stores charge Qmax. Find the potential difference across its plates (in V).

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it