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A stone is thrown the top of building upward at an angle of 30 to the horizontal with an initial speed of 20 m/s , if the height of the building is 45 m. How long does the stone to reach the ground? What is the speed of the stone just before it strikes ground?
A ball is thrown upward at 16m/s. How long does it take the ball to reach its maximum height?
An object slides down an inclined plane from an initial height of 30 meters.Its velocity at the foot of the plane is 20m/s.
The percentage of its initial potential energy which is deposited as heat is?
The expression of the magnetic field associated with an electromagnetic wave in 'vacuum is given by
B = (100D) ysin(2 x103t +k
Determine the wave number, frequency and the direction of propagation of the wave, " aand the magnitude and direction of the electric field associated with it.
Inner radius is R and outer radius 3R, charge density is p, negatively charged, long cylinder. This cylinder is immersed in a dielectric constant k= 80 (clean water), then what is the electric field strength of the cylinder axes from distance 5R. Write E5R wtih R,p and ε0.
Obtain the directional derivative for a scaler field (x,y,z) = 3x^2-y^3z^2 at the point ( 1, -2,-1)in the direction of i^+ j^+ k^......
A footballer kicks a ball with a force of 500N if the ball meets his leg just for 1 sec the impulse acted on the ball is
The power steering in an automobile has a mechanical advantage of roughly 75. If the input force on the steering wheel is 49 N, what is the output force that turns the car’s front wheels?
Metrological measurements show wind speed of 20 mph. What is the speed of train?
Determine the work done by the force F(xy+3z)i^+(2y^2 -x^2)j+(z-2y)k in taking a particle from  x = 0 to  x =1 along a curve defined by the equations: x^2= 2y ; 2x^3= 3z
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