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A ball is thrown vertically upward with a velocity 25meterspersecond on its weight down it was caught 5 meters above the ground find how fast it was travelling wh3n kt was caught and also find total time of the trip ?
the tiny ball at the end of the thread shows in below figure has a mass of 0.609g and is in horizontal electric field of intensity 700 n/c it is in equilibrium in the position. What are the magnitude and sign of the ball?
: on a thin rod of length L lying along the x axis with one end at the origin (x=0), as in figure there is distributed a charge per unit length is given by lambda so that the total charge on the rod is Q=lambda L.
Find an expression for the electric field at point P(O, y).
a molecule having two atoms has a dipole moment of 6*10^-3 cm. the distance between the atoms is 3.75*10^-11m. When the molecule is placed in an external uniform electrostatic field of magnitude 13n/c, its dipole moment makes an angle of 300 with that field.
-draw the system for these conditions and show the direction of the dipole moment vector explicitly
-calculate the amount of charge generating this dipole moment.
-calculate the magnitude of the torque on the dipole
A body is thrown vertically upward such that it crosses the same height after 2 sec. andafter 8 sec.
What is the value of the mentioned height?
what is the meaning of opaque object
The sun subtends an angle a half a degree at the pole of a concave mirror which has a radius of curvature of 15 m.Then the size(diameter) of the image of the sun formed by the concave mirror is :
a) 3.5 cm
b) 13.1 cm
c) 7.5 cm
d) 6.55 cm
A model rocket rises with constant acceleration to a height of 3.3m , at which point its speed is 28.0m/s .
a) What was the magnitude of the rocket's acceleration?
b) Find the height of the rocket 0.10s after launch
c) Find the speed of the rocket 0.10s after launch.
an object is placed in front of a symmetrical convex lens of with refractive index 1.5 and radius of curvature 40 cm . the surface of the lens further away from the object is silvered.under auto collimation condition, the object distance is
A particle is thrown over a triangle from one end of horizontal base and grazing the vertex
,it falls on other end of base. If "a" and "b" are base angles and "y" the angle of projection , prove tany = tana + tanb