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How is energy transformed in windmills?
Essentially what occurs is that as the energy from the wind rotates the vanes of the mill, coils of wire move inside a permanent magnet (generator) and generate electric voltage/current. This current is then goes onto the grid and used by us as electricity another form of energy. This is a very easy explanation and there is a lot more in the design of the system.
Study of a rolling ball A large ball bearing or 'bagatelle ball' rolling down a smooth track can be timed by a pendulum. To make the track, fasten together two 120 cm lengths o
why fall an apple from a tree
Q. Show the condition for dispersion without deviation? Q. A thin convex length of focal length 0.1m and a thin concave lens of focal length 0.1m are placed coaxially on contact
coaxial vectors
A roller coaster starts from rest at the top of an 18m hill. The car travels to the bottom of the hill and continues up the next hill that is 10.0m high. How fast is the car moving
"The volume of needed mass of gas at fixed pressure is directly proportional to the Kelvin's temperature of the gas".
Number of neutron in C 12 is (1)6 (2)7 (3)8 (4)9 Ans: (1)6
(i) It having of dissimilar bright lines. (ii) It is given by an excited source in atomic state. (iii)E.g. Spectrum of excited helium, mercury vapours sodium vapours or atomi
a sphere is at rest on a wall at a angle of 3,4(slpoe) to the left. it also rest against a vertical wall. we are to find the magnitude of the resultant force at the vertical wall.
What is electric field and formula for electric field is?
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