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1) Two large equipotent surfaces are flat & parallel & separated by a relatively small distance compared to their size. One surface is at 25 V & the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field midway between the surface?
2) Three point charges, q1=2.0 uc, q2=2.0 uc, & q3= -1.0 uc, are located at the vertices of an equilateral triangle of side length 30 cm. What is the potential energy of this arrangement?
A heat engine operating between energy reserviors of 192.83 oC and 517.28oC has 29.32% of the maximum possible efficiency. How much energy must this engine extract from the hot reservior
Planet X is 307 times more massive than Earth, and its radius is 10.8 times Earth's radius. How many times more would you weigh on Planet X
Suppose that the amount of heat removed when 2.8 kg of water freezes at 0.0 oC were removed from ethyl alcohol at its freezing/melting point of -114.4 oC. How many kilograms of ethyl alcohol would freeze
The power crossing a surface perpendicular is equal to the intensity at the surface times the area of the surface. Since the source emits uniformly in all directions, the light intensity is the same at all points on the imaginary spherical surface..
In addition to dark matter cosmologists have proposed dark energy. The reason for this was the discovery of: A) slowing down of the expansion of the universe B) cosmic background radiation C) acceleration of the expansion of the universe D) gravitati..
The sound level measured 5.2 m away from a jet engine is 140 dB. At what distance is the sound level exactly half
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
The speed of a bullet as it travels down the barrel of a gun isgiven by V=-5000t2 -300t, where v is in km/s and tin seconds. The acceleration of the bullet as it leaves the barrel is zero.
A thin pole extends straight up from the bottom of a clear pond 2 m deep. What is the length of the pole's shadow on the bottom of the pond
A 10.0 kg mess kit sliding on a frictionless surface explodes into two 5 kg parts, one moving at 4.5 m/s, due north, What was the original speed of the mess kit
A doubly charged ion is accelerated to an energy of 30.0 keV by the electric field between two parallel conducting plates separated by 1.60 cm
Suppose each of the object's three dimensions is increased by a factor of 3 without changing the material od which the object is made. By what factor will the density change
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