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An 9.0 kg object is moving 5m/s in the positive x direction has a one dimensional collisions with a 3.0 kg object moving 4.0 m/s in the opposite direction. the final velocity of the 9.0 kg object is 2.0 in the positive x direction. What is the total kintetic energy of the two-mass system after3 the collision?
Atomic nuclei have a typical density of about 10^(17) kg/m^3. The density of liquid mercury is roughly 10^(4) kg/m^3. Approximately what fraction of the volume of liquid mercury is empty space between mercury nuclei?
What is its velocity when it reaches the maximum height.
According to Equation 20.7, an ac voltage V is given as a function of time t by V = Vo sin 2ft, what is the smallest value of the time at which the voltage equals one-half of the peak-value
A shopper pushes a cart 44- m south down one aisle and then turns 90.0° west and moves 30 m. He then makes another 90° turn and moves 13 m.
A spherical mirror has a focal length of +10cm. Find the location and then describe the miage for an object for an object distance of 25cm. How fast does the image of the object move
The battery has internal resistance of 0.100 Ω, and the rod and rails have negligible resistance. A 2.02 T magnetic field is directed perpendicular to the plane of the circuit. Find the magnetic force on the rod. F= 38.78 N. Find out the rod's spe..
A thin uniform 15 kg post, 1.75 m long is held vertically using a cable and is attached to a 5kg mass and a pivot at its bottom end. Find the angular acceleration of the post about the pivot just after the cable breaks
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.54 m/s. The pulling force is 108 N parallel to the incline, What is the change in kinetic energy of the crate
A person starts from rest at the top of a large frictionless spherical surface, and slides into the water below. at what angle does the person leave the surface
The width of the ribbon normal to a radius vector originationg at the star's center is much greater than the thickness of the ribbon in the radial direction.
A 31.0-kg crate rests on a horizontal floor, and a 72.5-kg person is standing on the crate. Determine the magnitude of the normal force that the crate exerts on the person
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