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Two objects collide and bounce off one another. After the collision, object m1 = 3.10 kg moves off at 8.9 m/s at a heading of 313 degrees. Object m2 = 3.25 kg moves off at 14.9 m/s at a heading of 223 degrees. Initially, m2 was traveling at 14.9 m/s at a heading of 331 degrees. What must have been the initial velocity of m1? Give the speed for your first answer and the compass heading for your second answer.
A copper (cu) penny has a mass of 3.11 g. The molar mass of copper is 63.5 g/mol. How many atoms of Cu are there ? what fraction of the electrons have been removed
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 movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 29 m away. what is the height of the image in millimeters on the film
A 5kg block is accelerated at 3 m/s^2 while fighting a frictional force of 25 N. What force needs to be applied to the block
A Ball begins rolling at the left and has just suffient energy to climb up to point C, which is the top of the hill on the right
A typical capacitor in an MP3 player has C =0.10 µF. If a charge ±8.7 µC is placed on the plates, what is the voltage across the capacitor?
A square plate of copper with 35.0-cm sides has no net charge and is placed in a region of uniform electric field of 60.0 kN/C directed perpendicularly to the plate. find the total charge on the positive face of the plate
1 in the formation of a star a large volume of gas and dust particles contracts due to gravitational pull. which of the
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.10 m and D = 12.2 m, find H.
A transformer has 330 primary turns and 1340 secondary turns. The input voltage is 120 V and the output current is 15.0 A. What are the output voltage and input current
A star moving away from the Earth at 0.320c emits radiation that we measure to be most intense at the wavelength 530 nm. Determine the surface temperature of this star
On December 27, 2004, astronomers observed the greatest flash of light ever recorded from outside the solar system. what was the average power output (in terms of P) of this magnetar
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