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A cardinal (Richmondena cardinalis) of mass 4.50×10?2 kg and a baseball of mass 0.144 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's momentum?
A man weighing 670 kg and a woman weighing 420 kg have the same momentum. What is the ratio of the man's kinetic energy to that of the woman ?
A square wire 2.0 cm on each side is oriented so that a 5.00 mT magnetic field makes a 30.0 degree angle with the normal to the plane of the square. how many loops does the wire make
A stone takes 0.28s to travel past a window 2.2m tall. From what height above top of the window did the stone fall?
A small, 100g cart is moving at 1.70m/s on an air track when it collides with a larger, 3.00kg cart at rest. what is the speed of the large cart after the collision
An asteroid orbits the Sun at a constant distance of 4.080e+11 meters. What is the orbital speed of the asteroid
a planet with a radius of 6.00 x 10^7 m has a gravitational field of magnitude 30.0 m/s2 at the surface. what is the escape speed from the planet
A motorcycle starts with a constant acceleration of 3.0 m/s^2. At just that instant a buick with a constant speed of 20 m/s passes the motorcycle, How fast is the motorcycle travelling when it overtakes the buick
A sample of a material has 40000 radioactive particles in it today. Your grandfather measured 80000 radioactive particles in it 60 years ago. how many radioactive particles will the sample have
the potential energy of a +5x10-6C charge decrease from 0.17J when it is moved from point A to point B. What is the change in the electric potential between these two points
A grandfather's clock is calibrated at a temperature of 20 C. The pendulum is a thin brass rod with a heavy mass attached to the end. On a hot day, when the temperature is 30 C, does the clock run fast or slow? How much time does it gain or lose i..
A beaker containing 300mL of water at 20 clesius has a 150g piece of Aluminum at 50 celsius placed in it. What is the final equilibrium temp of the water and aluminum
A 125 kg mail bag hangs by a vertical rope 3.3 m long. A postal worker then displaces the bag to a position 2.2 m sideways from its original position, What horizontal force is necessary to hold the bag in the new position
q1. a 60 kg circus performer jumps from a 6.2 m height onto a trampoline and stretches it downward 0.36 m. assume that
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