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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
Micro Waves: Micro waves are radio waves with shorter wavelength among 1mm to 300cm. Microwaves are used in Radar and microwave ovens.
an object moves along the x axis according -to the equation x(t)=(3t^2-2t+3)m .determine (a) the average speed b/n t=2sec and t=3sec,(b) the instantaneous speed at t= 2s and t=3s (
OBLIQUE COLLISION
In a Wheatstone bridge ABCD, a galvanometer is connected between A and C, and a battery among B and D. A resistor of unknown value is connected among A and B. When the bridg
Figure shows an arrangement of a carriage system. A force P is applied on the carriage B and moving rightward at 3 m/s 2 constant acceleration. At the instant shown the velocit
Draw the v-t graph of an automobile that accelerates uniformly from rest at t = 0.00 s and covers a distance of 180.0 m in 12.0 s.
POPULATION INVERSION and LUMINOUS FLUX: POPULATION INVERSION: The process in which number of electrons (N ) in a higher2 energy state called metastable state of an active medi
so we just started physics in grade 10, and i dont understand to much of it.. could you help me better understand it? and help me understand what i should expect?
What is Fresnel explanation of optical activity
Adding 3 Vectors A simple demonstration of adding 3 vectors graphically. Also elaborates in which vector addition is relative.
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