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An elementary particle is:
(1)An element present in a compound
(2)An atom present in an element
(3)A sub-atomic particle
(4)A fragment of an atom
Ans: (3)A sub-atomic particle
A 40 kilogram girl climbs a vertical distance of 5 meters in twenty seconds at a constant velocity. How much work has the girl done? Ans: 2000 joules or 1960 joules work is
Q When calculate Planck's constant, a student's calculations produce values of 5.78 × 10 -34 J·s and 7.29 × 10 -34 J·s. If the accepted value is 6.63 × 10 -34 J·s, what is
moment of inertia theory and easy diagrams
The forced harmonic oscillations have same displacement amplitude at frequencies ω 1 = 400 Hz and ω 2 = 800 Hz. Evaluate the resonance frequency at which the displacement is maxi
Explain about the scanning process and image formation of scanning electron microscope. Scanning process and image formation of scanning electron microscope In a typical sca
A ballerina begins a tour jete with angular speed ?i and a rotational inertia consisting of two parts: Ileg = 1.55 kg*m^2 for her leg extended outward at angle ? = 90.0 to her body
FACTORS AFFECTING INDUCED EMF By experiment, the following factors may be noted: • The faster the magnet (or coil) is moved, the greater is the deflection obtained on the meter
Aluminium Atomic number 13 Symbol Al Atomic weight 26.98154 Discovery W
Explain the Air Resistance If you drop a feather and a cannonball at the same time from the same height, which will hit the ground first? The cannonball of course. Why does the
Using an Optical Bench This applet permits users to simulate standard optic elements that is lens, mirror, dielectrics, sources, apertures and observe the ways in which light r
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