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A small block of mass 1.2 kg is pushed against a 2.3 kg block by your hand such that if you don't push the small block fast enough against the large block the small block will slide down to a platform. The coefficient of static friction between the two blocks is 0.3 and the coefficient of static and kinetic frictions between the large block and the smooth platform is zero. Find the minimum force that your hand can exert on the small block to keep it from sliding down against the large block.
A kingfisher is hovering 30m above a lake when it drops a fish its carrying. What initial speed should it have if it is to reach the fish just before the fish hits the water
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
a brass cylindrical bar at 300 k has a diameter of exactly 20 mm. an aluminum ring has an inner diameter which is
An LC circuit has zero resistance, no battery, a capacitor C=70microFarads, and an inductor L=0.6H connected in a simple loop. What is the maximum magnetic field inside the inductor
How to find out potential energy
a fence post is 46.0m from where you are standing in a direction 39.0 degree north of east. a second fence post is due
A man drags a 78.0-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. Find the magnitude of the tension in the strap
A grasshopper makes four jumps. The displacement vectors are (1) 25 cm, due west; (2) 23.5 cm, 50° south of west; (3) 24.5 cm, 56° south of east; and (4) 36 cm, 43° north of east. Find the magnitude and direction of the resultant displacement. Expres..
A long straight cylindrical wire conductor of radius R carries a current I of uniform current density in the conductor. Find the magnetic field outside the wire
A uniform electric field exists in a region between two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 2.0 cm away, in a time 7.6 x 10-8 s. (a..
Calculate the maximum value of resistance that can be obtained by combining resistors of 34 Ohms , Calculate the minimum value of resistance
Two electric dipoles with charges +Q, where Q = 5 mC, Find the magnitude of the electric force between the two dipoles.
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