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A sensitive gravimeter at a mountain observatory determines that the free-fall acceleration is 9.0 × 10-3 m/s2 less than that at sea level.
Find what is the observatory altitude?
A section of copper transmission line carries a steady current of 265A and has resistance 0.82 ohem, Ignoring the energy needed to refrigerate the superconductor, how much energy will be saved in one year
Two infinite lines of charge lie in the x-y-plane, parallel to the y-axis. Line 1 has linear charge density ?1 = 4.2 ?C/m and passes through x = -3.5 cm. What is the flux through the cube
An ice cube is dropped in a glass of oil (density= 900 kg/m^3). What fraction of the ice floats above the oil
An airplane propeller is 2.08 m in length (from tip to tip) and hasa mass of 117kg. If it were not rotating, how far would it have to drop infree fall to acquire the same kinetic energy
A 3-MOhms resistor is connected in series with a 2 micro Farrad capacitor and a 6.0 V battery of negligible internal resistance
a certain rain cloud at an altitude of 1.75 km contains 3.20 x 107 kg of water vapor. how long would it take a 2.70-kw
Imagine a stationary sourceof sound waves. By stationary, we mean that it is not moving with respect to the medium. How fast would you have to move toward the source in order to perceive twice the “actual”frequency? The speed of sound in air is 34..
Two titanium spheres approach each other head-on with the same speed and collide elastically. What is the mass of the other sphere
two hockey players strike a puck of mass of .164kg, one from westward force of 1.10 x 10^3 Newtons, what is the degrees north of west
A pendulum of length 1.00 m swings in a vertical plane. Whenthe pendulum is in the two horizontal positions Θ =90 andΘ =270, its speed is 5.00 m/s. find the magnitude and direction of the total acceleration
Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 5 bar and a quality of 60%. Determine the final mass of vapor in the tank
How much work does a steam crane need to do in order to lift a 108,500 kg locomotive back onto the track if the locomotive has been derailed into a ditch 3.25 meters below the level of the tracks
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