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Making a shadow stick
In an open space on the school ground drive a 130 cm stick into the ground and let the children stay a record of the length of the shadow, calculated two or three times a day at different seasons of the year.
a drawing pin is pushed against a wooden table with force of 10N. calculate the pressure exerted by the pin at a point on table if area of point is 0.01m square
What is the echo of the launched pulse? Any discontinuity into the medium of propagation of an ultrasonic pulse provides rise to back-reflection that travels back to the input
Different theories of nature of Light: What are the different theories which explain the nature of Light? A. The different theories that explains the nature of the light ar
Q. What is "optical activity and optical rotation"? Write the laws of optical activity of optically active solution. Optical Activity If a plane polarized light is made
i. Open System - Here the system boundary is like energy and matter can enter or leave the system freely. Infect the system boundary here is imaginary. ii.Closed System - Here t
An electron is unrestricted from rest at a point in an evacuated region of space at which the electric potential is 5.0 volts. No force except the force of the electric field chara
a column of water contains fine metal particles of radius 2*E(-8) m, which are in thermal equillibrium at 298 K. if there are 1000 particles per unit volume at a given height,how m
What is electricity
: Construct a regular proof to derive the conclusion of the following argument: 1. (A & U) ~R 2. ~(~R v ~A) / ~U
A copper wire whose diameter is 0.16 cm carries a steady current of 10 A. What is the current density of the wire?Also calculate the drift velocity of the electrons in copper.
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