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A 15 gram rubber bullet hits a wall with a speed of 150 meter per second. The bullet bounces back with a speed of 120 meter per second after being in contact with the wall for 0.003 second. Find what force did the wall apply to the bullet?
a 3.000 u 1 u 931.5 mevc2 object moving to the right through a laboratory at 0.8c collides with a 4.000 u object
Charges of 4.0 mC and - 6.0mC are placed at two corners of an equilateral triangle with sides of 0.10 m. At the third corner, what is the electric field created by these two charges
In photo like the Hubble Deep Field, we see galaxies in many different stages of their lives. In general, which galaxies are seen in the earliest (youngest) stages of their lives.
question a crate is sliding down an inclined plane. the coefficient of kinetic friction between the crate and the plane
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild, determine the magnetic field strength at the center of the coil
two polarizers are out of alignment by 24.1deg. if light of intensity 1.00 wm2 and initially polarized halfway between
a 310-n child is in a swing that is attached to a pair of ropes 1.80 m long. find the gravitational potential energy of
The Duchess has set up a pendulum in the door to her house by tying a string of 1.5 meter length to a ball of mass 0.9 kilogram and attaching it to the top of the door. Find how high does the ball now rise on the side with the rod
A 10-kg box is at rest on a horizontal frictionless surface, at the end of an unstretched horizontal spring with constant k=4000 N/m, What is the speed of the box when it passes back through the equilibrium point
a capacitor is formed by a long length l 1-mm diameter wire that is centered inside a long l 25-mm diameter cylindrical
A 0.47 m long guitar string, of cross-sectional area 1.0 10-6 m2, has Young's modulus Y = 1.90 109 N/m2. By how much must you stretch the string to obtain a tension of 10 N
An explosion breaks an object, originally at rest, into two fragments. One fragment acquires twice the kinetic energy of the other. What is the ratio of the masses
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