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A body of mass 2 kg thrown vertically upwards with a velocity 40 m/s comes to instantaneous rest at a height 50 m. Is there any other force (other than gravitational force), if yes then calculate the value. Ans) Yes , a force due to air drag will be there , to calculate this wehave to first find work done by air drag..Acc. To work-energy theoremWgravity + Wair drag = change in K.E.-Mgh +Wair drag = change in K.E.Wair drag =change in K.E. +mgh=[0-1/2mu2] +mgh = -1/2 x 2 x (40)2 + 2x 10 x 50 = -1600+1000 = -600Jnow w.d. = F x sF= -600/50 = -12N
Permittivity of free space; electric constant; epsilon_0 The ratio of the electric displacement to the intensity of the electric field generating it in vacuum. This is equal to
A quantity that can be calculated by instrument, clearly defined and has proper units is known as physical value. Physical quantities are described as fundamental and derived quant
Right hand Rule: James clark Maxwell proposed a rule to search the direction of magnetic lines of force around a wire carrying current. This rule states. "If a current carr
What are the applications of electron microscopy in industry? Industrial applications of electron microscopy: a. High-resolution imaging and Forensics b. Particle detecti
A machine performs 8 Joules of work in 2 seconds. How much power is delivered by this machine? Ans: The power is delivered by this machine is 4 watts.
Consider a 10 cm long portion of a straight wire having a current of 10 A placed in a magnetic field of 0.1 T making an angle of 530 with the wire. What magnetic force does the wi
Show the types of chromatic aberration. What do you understand by Fraunhoffer lines? Explain their origin.
how CPH is able produce all bosons? Answer; the fermions produce their bosons. Look at the pair production that before of pair there is not boson, however after pair bosons app
What are simple ways to quantify the dryness of a semi-permeable hard surface?
composition of two simple harmonic vibrations acting at right angles
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