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A 1.2 kg toy car traveling at 2.0 m/s to the right collides and sticks to a 2.0 kg toy car traveling at 1.6 m/s to the left. What is the final velocity of the pair? What fraction of the total initial kinetic energy was lost in the collision? (i.e.- compare the sum of the kinetic energies before and after the collision)
A string requires a 186 N force in order to break. A 1.50 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.90 m. What is the highest speed that this mass can be whirled without breaking the string.
A uniform solid ball that has a mass of 21.8 g and a radius of 5.1 cm rests on a horizontal surface. What is the angular speed of the ball after impact
A common flashlight bulb is rated at 0.300 A and 2.80 V (the values of the current and voltage under operating conditions). what is the temperature of the filament when the bulb is on
Using a theodolite, with a laser rangefinder, a researcher at point A locates a pair of rare birds nesting at point B, For observation from point C, determine the direction angles and distance to the nest at B
A wooden raft has a mass of 81 kg. while empty it floats in water (density 1000 kg/m3) with 64% of its volume submerged. What mass of sand can be put on the raft without it sinking.
A 0.20 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. Determine the speed of the stone
Two blocks with masses m = 16.7 kg and M = 70.1 kg are not attached. The coefficient of static friction between the blocks is 0.45 but the surface beneath M is frictionless. What is the minimum force F required to hold m against M?
The coefficient of kinetic friction between the block and incline is = 0.45. The mass of the spring is negligible.
two point charges each have a value of 30.0 mC, compute the electric field midway between the two charges
On the planet Zardem, the standard unit of time is the Zarsec, or Zs, where 1 Zs = 2.2s. how fast is the runner traveling
While taking photographs in Death Valley on a day when the temperature is 58.0°C, What current does he register there if the temperature is -88.0°C
A small statue has a height of 3.8 cm and is placed in front of a concave mirror. evaluate the focal length of the mirror
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