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A bullet is fired at a wooden block which is at rest on a table. The bullet hits and embeds itself in the block. The mass of the bullet and the block are 0.2kg and 2.8kg respectively. Assuming there is no friction between the wooden block and the table, answer the following questions.
(a) If the speed of the bullet is 240m/s find the speed of the block just after the collision.
(b) Find the energy loss in the collision and explain the reason for such a large energy loss.
Consider the waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air. The string waves and the sound waves have the same frequency. Can someone describe why?
What is the highest possible temperature of the spoon when you finally take it out of the cup?
Light passes through a diffraction grating with 3550 lines/cm and forms a first-order maximum at an angle of 12.07°. At what angle will the second maximum appear
A 4m long wire with thickness 5mm carries a current 0.4 A. A second identical wire of equal length and thickness is parallel and carries 0.6 A in the same direction. The two wires are separated by 12 cm as measured from the outside of the wire.
A hollow, conducting sphere with an outer radius of 0.240m and an inner radius of 0.210m has a uniform surface charge density of +6.84*10-6C/m2, Calculate the strength of the electric field just outside the sphere
The coefficient of static friction between m1 and the horizontal surface is 0.60, and the coefficient of kinetic friction is 0.30. what will be the acceleration of the system
A flock of geese is attempting to migrate due south, but the wind is blowing from the west at 5.1 m/s. If the birds can fly at 7.5 m/s relative to the air, find in what direction should they head
Steel wire with mass 29 g and length 1.14 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Compute the linear density of the string
A particle known as a pion lives for a short time before breaking apart into other particles. What is the lifetime according to a hypothetical person who is riding along with the pion
a rock is thrown horizontally with a speed of 17 ms from a vertical cliff of height 30 m.a how long does it take to
There is a tree in the middle of your front yard and you take pictures of a squirrell as it runs around the tree. What is the displacement of the squirrell between the rst and second pictures
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.90 1011 m apart. What is the mass of the smaller star
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