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A person attempts to calculate the gravitational constant G by suspending two 100.0kg spherical masses from a high ceiling in a shopping mall and calculating the deflection of the cables from the vertical.
a) sketch a free body force diagram of one of the masses.
b) The cables are 45.0m long and attached to the ceiling 1.00m apart. What is the distance amnong of the two masses (centre of mass to centre of mass) at the bottom?
Faraday's second law of electrolysis: The charge Q needed to deposit or liberate a mass m is proportional to the charge z of the mass, the ion and inversely proportional to th
for 2013
Which statement concerning the electric potential of a solid object made out of a perfectly conducting medium is most correct? Answer: It is the electric field which is z
Photoelectric electricity is produced directly from solar energy when which following are absorbed in a semiconductor to create an electric current? a) Protons b) Electron
why electrons do not exist in nucleus
How is a wave front dissimilar from a ray ? Draw the geometrical, shape of the wave fronts when (i) light diverges from a point source, and (ii) light emerges out of a convex le
Define the Intensity of the laser in short. Intensity: a. Lasers are intense and bright light sources. It is due to coherence and directionality. b. The intensity is e
What is the meaning of Refraction? Waves that do not reflect back from a boundary but travel into the new medium instead are said to refract. In one dimension, the wave just mo
Presume you are asked to find the electric field at point P whose coordinates are (L, y) for the case of a consistent line segment of charge which extends from x=0 to x=L on the x
Gravity-Free Environment Assume a zookeeper must shoot a banana from banana cannon to a monkey who hangs from the limb of a tree. This particular monkey has a habit of plummeti
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