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Q. A charge of -6 nC is at the origin and a second charge of 11.0 nC is at x = 5.0m. Find the magnitude and direction of an electric field halfway in between the two charges.
Q. Two speakers, one directly behind the other, are each generating a 235 Hz sound wave. What is the smallest separation distance between speakers that will produce destructive interference at a listener standing in front of them? Take the speed of sound to be 342m/s.
Water can hold 36 grams (g) of salt in every 100 milliliters (mL). The ocean contains 3.6 g of salt in every 100 mL. As a solution, which is seawater.
Each is afraid that one vine will break; as a result they grab each other and hang on. They swing upward together, reaching a point where the vines make an angle of 22.1° with the vertical. Find the value of the ratio m/M.
An airplane must reach a speed of 172 mi/h to take off. If the runway is 470 m long, what is the minimum value of the acceleration that would allow the airplane to take off productively.
What is fraction of the diameter of the Sun
A 2.80x 10^2 W electric immersion heater is used to heat a cup of water. The cup is made of glass and its mass is 3x10^2 g. It contains 250g of water at 15°C.
compute the free energy DeltaG at 25 ^circ rm C for the nonstandard conditions at point B where the reaction quotient Q is 2.75 times 10^{-5}.
Consider the 642 N weights held by two cables shown. The left-hand cable had tension T2 and makes an angle of thelta2 with ceiling. The right-hand cable had tension 460 N and makes an angle of 47 degrees with the ceiling.
Scientist calls a theory that unites many ideas in a simple way "beautiful." Are unity and simplicity among the criteria of beauty outside of science? Help support the answer.
find the magnitude of the initial acceleration. At what height above the surface of the earth does the balloon have a speed of 7.30 m/s.
A brick is thrown upward from the top of a building at an angle of 45° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building.
A flight attendant pulls her 70.10 N flight bag a distance of 258 m along a level airport floor at a constant speed. The force she exerts is 36.30 N at an angle of 52.0° above the horizontal.
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
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