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In an atomic physics experiment, two atoms collide with each other in such a way that the initial total momentum of the atoms is zero. The atoms are chosen so that M2= 2.0 M1.
In the collision, the atom M1 has a final velocity, V1f= - 0.25 V1j. What is the ratio of the final kinetic energy to the initial kinetic energy of the system (the two atoms)? In other words, what is KEfinal/ KEinitial in this collision?
A girl of mass 42 kilogram throws a ball of mass 0.5 kilogram against a wall. Find the average force exerted on the wall by the ball
A horizontal force of 109 Newton pushes an 8 kilogram block up a frictionless incline that creates an angle of 23 degree with the horizontal. Find what is the acceleration of the block
A certain fluid has a density of 1090 kg/m3 and is observed to rise to a height of 2.3 cm in a 1.0-mm-diameter tube. Calculate the surface tension of the fluid
A car is going with a constant speed of 15 m/s (about 34 mph) in a school-crossing corner, where the speed limit is 10 m/s (about 22 mph). What is the distance traveled at that point
A mirror produces an image of the sun, and the image is located 0.9800 m from the mirror. The same mirror is then used to produce an image of the tree. find the object distance do of the tree from the mirror
A 1400 kg block is lifted at a constant speed of 4 cm/s by a steel cable that passes over a massless pulley to a motor-driven winch. What force must be exerted by the cable
a metal sign for a car dealership is a thin uniform right triangle with base length b and height h. the sign has mass
a heat lamp emits infrared radiation whose rms electric field is erms 3600 nc. a what is the average intensity of the
Two equal positive charges of magnitude q1 = q2 = 6 nC are on the y axis at y1 = +3 cm and y2 = -3 cm. (a) What is the magnitude and direction of the electric field on the x axis at x = 6 cm? b) What is the force exerted on a third charge q0 = 4 n..
The maximum torque experienced by a coil in a 0.80 T magnetic field is 8.4*10-4 N · m. The coil is circular and consists of only one turn. The current in the coil is 3.7 A. What is the length of the wire from which the coil is made?
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneous breaks into two alpha particles, what is the force between the two alpha particles when they are 7.00 x 10^-15 m apart
A football kicker can give the ball an initial speed of 24 m/s. He is 54 m from the goalpost which has a crossbar 3.46 m high. What is the smallest angle of elevation
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