First of all, we need that the 2 spheres need to not be in contact, otherwise their charges would balance and we would have neutral spheres. Then, rub the glass rod with silk; the glass rod is then charged positively and the silk negatively. Touch one sphere with the glass rod and the other with the silk piece. Because metal spheres are excellent conductors, they will absorb all the charge and thus they will have the same charge, but opposite signs.
Answer:
The type of medium affects a sound wave as sound travels with the help of the vibration in particles.
Explanation:
As different mediums have different amount and size of particles, for example, the speed of sound is faster through solid than liquid as solids have closely packed particles whereas liquids are loosely packed.
Answer:
Although the vast majority of DNA in most eukaryotes is found in the nucleus, some DNA is present within the mitochondria of animals, plants, and fungi and within the chloroplasts of plants.
Explanation:
Answer:
6.15 s
Explanation:
The period of a simple pendulum is given by the equation
where
L is the length of the pendulum
g is the acceleration of gravity
For the pendulum in this problem,
L = 1.5 m (length)
(acceleration due to gravity on Earth)
Therefore, its period is
And therefore, the time taken for the pendulum to complete 2.5 oscillations is equal to 2.5 times the period:
