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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
Q. Write down Schrodinger's wave equation for a particle in a three dimensional box. Solve it to get eigen functions and show that the eigen values are discrete. Ans. Fr
The truss shown below supports is fastened to the supports at A & E. Each member of the truss is made of the same uniform material that has a weight in kiloNewtons per metre (kN/m
Null experiment: An experiment that yields no result after being executed. Null experiments are just as meaningful as non-null experiments; if current theory determined an obs
Constant Positive Velocity Observe in which the object below moves along with a constant velocity within the positive direction. The dot diagram shows in which each consecutive
Q. Determine the elapsed time in kinematics? Let S = 1 + c 2 + c 4 + ........ Then, S = 1 + c 2 (1 + c 2 + c 4 +.......... ) S = 1 + c 2 S so, S - c 2 S = 1
Why because it is not a source as Li-ion battery. If we want to measure the voltage(build in voltage) with in the diode we have to use the external source. We can''t directly measu
a column of water contains fine metal particles of radius 2*E(-8) m, which are in thermal equillibrium at 298 K. if there are 1000 particles per unit volume at a given height,how m
Determine range of V for obtaining a regulated voltage demonstrated in Figure. For the data 0 ≤ I L ≤ 4 mA 2 ≤ I Z ≤ 8 mA Ans: Determination of range of V for
What is the acceleration due to gravity and does the number ever change on earth
Q. State any three uses of IR rays. (a) Infrared lamps are utilized in physiotherapy. (b) Infrared photographs are utilized in weather forecasting. (c) As infrared radia
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