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The velocity of a motor boat with respect to Still Water is 7 m/s and the velocity of water in river is 3 m/s. When the boat starts moving upstream, a float was dropped from it.
a rocket is projected upwards with a velocity of 490. find te time taken to reach the ground
A source producing sound at frequency 400 Hz is moving along the Y axis with a speed of 22 metre per second. A listener is situated at position (660m,0). Find the frequency of the
Can lighting optic fiber to be spliced or joined? All fibers can be spliced along with difficulty and more or less success. The problem is the losses resulting from that a join
In a Newton's rings experiment in laboratory source of light having two wavelengths 6000Å and 4500Å is used. It is found that n th dark ring due to 6000Å coincides with
Q. An iron box of 400 W power is used daily for 30 minutes. If the cost per unit is 75 paise, find the weekly expense on using the iron box. Energy obsessive in 30 minutes
The stopping potential of a photocell is 2.3 V. What is the initial velocity of an emitted photoelectron that is brought to a stop by the photocell?
one coin is thrown upword from 100m top building with velocity 15m/s .2s later 2nd coin is dropped downword at what distance from top of building 2nd coin cross first? Ans) They
(a) Explain the terms: 'magnetic field strength', 'magnetic flux density' and 'permeability' of a magnetic material. Write their SI units. A current carrying conductor is placed
A small bulb is placed at the bottom of a tank containing water to a depth of 80 cm. What is the area of the surface of water through which light from the bulb can emerge out? Refr
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