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If a particle is projected vertically upward in a constant gravitational field with an initial speed v0. If there is a retarding force proportional to the square of the instantaneous speed, the speed of the particle when it returns to the intial position is v0vt/√(v02+vt2) where vt is the terminal speed.
Explain the Resonance of Sound in Strings Strings on musical instruments, like harps, are held still at both ends, that is why the standing waves have nodes at every end of the
Depending upon the penetration power, there are two parts of X-rays Hard X-rays More penetration power More frequency of the order of ≈ 1019 Hz Lesser wavelength range
Chemical changes during: Discharging: The current will flow from positive to negative plate in the external circuit. As current now enters by negative plate, the negative
What is the essential difference between an electron and a beta ray? The electron of nuclear origin is known as a beta-particle. There is otherwise no difference among an elec
Illustrate Kirchhoff's law in electricity and apply them to Wheatstone bridge to get its balancing condition. Illustrate the basic principle of meter bridge. Define an experimen
A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 440 Hzsource of sound. The microphone vibrates up and down in s
(a) Two 40 g ice cubes are dropped into 220 g of water in a thermally insulated container. If the water was initially at25°C, and the ice came directly from a freezer at -15°C,what
Describe the resolution of the scanning electron microscope. Resolution of the SEM (scanning electron microscope): The spatial resolution of the SEM depends onto the size of
Is it probable for the electric field to be non-zero at a point in space where the electric potential is zero? Ans: Regard as for instance the case of an electric potential
explain with the aid of a diagram what is meant by the moment of a force about point
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