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An electron is moved from point A, where the electric potential is VA = -280 V, to point B, where the electric potential is VB = -362 V. What is the change in the electric potential energy?
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. how close will the helium atom come to the gold nucleus
Gas is contained in a 9.00-L vessel at a temperature of 25.0°C and a pressure of 5.00 atm. Determine the number of moles of gas in the vessel
A point source of source emits a tone with a power of 45 W that has a frequency of 429 Hz. calculate the pressure amplitude in Pascals of the sound
A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19m/s. What is the change in the momentum of the ball.
Two small nonconducting spheres have a total charge of 90.0. When placed 1.14 apart, the force each exerts on the other is 11.8 and is repulsive. What is the charge on each
A balloon contains 1.8mol of helium at 1.0atm initially at 180 degree C. How much work does the gas do in the process
an extremely long thin wire carries a uniform linear charge density of 358 ncm. find the potential difference between
A particle falls in Earth's gravity. The force of air resistance is F = ??v1* v2 where v1 is the velocity, v2 is the speed, and ? is a constant. (The direction of the force is opposite to the velocity, and the magnitude of the force is ?v2.) If th..
if the average volume flow of blood through the aorta is 9.4 x 10-5 m3s and the cross-sectional area of the aorta is
In each cycle of its operation, a refrigerator removes 8 J of heat from the inside of the refrigerator and releases 22 J of heat into the room. How much work per cycle is necessary to operate this refrigerator.
A base on Planet X fires a missile toward an oncoming space fighter. The missile's speed according to the base is 0.81 c. How fast is the space fighter traveling relative to Planet X
A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm. A very wide viewing screen is 2.1 m behind the grating. How many bright fringes can be seen on the screen
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