1. A hollow conductor in the form of a cube with small hole cut in one side has a charge +39 placed
on it. If a POINT charge of+q is introduced through the hole (without touching the shell) and
placed at some point near the center of the cube the total charge on the outer surface of the cube
becomes
a. +
+39
b. -4
c. +29
é o do
+39
+49
Introducing a charge tq
cross-section with Introduced
charge +

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m. the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot