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Q. A rifle that shoots bullet at 460 m/s is to be aimed at a target 45.7m away and levelwith the rifle . how high above the target must the rifle barrel be pointed so that the bullets hits its target?
Q. Two point charges are on the y-axis, one of magnitude 3.0 x10-9 C at the origin and a second of magnitude 6.0 x10-9 C at the point y = 30 cm. Calculate the potential at y = 60 cm.
Compute the distance of two point's p1 and p2 in the x-y plane with the following Cartesian coordinates: p1= (-5m, +8m), p2= (+3m, +2m). Draw the position vectors into appropriate-points.
A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is 4.8N. The buoyant force has a magnitude of 6.5N and acts vertically upward. External force acting on the ball maintains it in the state of res..
Find out total vector displacement
Which of the following must be true if we are to infer (calculate) a star's luminosity directly from the inverse square law for light.
How much time is neccesary to stop the crate. A block with mass m = 5.5 kg slides down an inclined plane of slope angle 10.9 ° with a constant velocity. It is then projected up the same plane with the initial speed 3.85 m/s. How far up the incline ..
A 60 kg woman stands on a very light, rigid board that rests on the bathroom scale at each end. She is 1.5m away from one side and 0.5 m from the other.
find the minimum thickness for constructive interference of visible light with a wavelength of 595 nm.
You pull with a force of 295 N on a rope that is attached to the block of mass 20 kg, and the block slides across the floor at a constant speed of 1.2 m/s. The rope makes an angle of 35 degrees with the horizontal.
What is the acceleration of the truck. If it starts 4.50 m from the lower edge of the roof, how fast would the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 18.0 N.
How much work is completed by the Moon's gravitational field as a 915kg meteor comes in from outer space and impacts on the Moon's surface.
Using the equation F=m v^2/r for a force an object in circular motion. Find the radius r of motion of a m=1.6 kg ball travelling in a circular path acted upon by a centripetal force F=7N.
A student of weight 665 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from seat is 566 N.
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