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Water is circulating through a closed system of pipes in a two floor apartment. On the first floor, the water has a gauge pressure of 3.30 × 105 Pa and a speed of 2.30 m/s. However, on the second floor, which is 3.60 m higher, the speed of the water is 3.90 m/s. The speeds are different because the pipe diameters are different. What is the gauge pressure of the water on the second floor?
A point charge Q produces an electric field of magnitude 110.5 N/C at a distance of 1.48 m. If the field is directed toward the charge, What is the value of charge
Water is flowing in a horizontal pipe of variable cross section. Where the cross-sectional area is 1.10×10-2 m2, the pressure is 5.60×105 Pa and the velocity 0.80 m/s. In a constricted region where the area is 5.00×10-4 m2
In recent years, astronomers have found planets orbiting nearby stars that are quite different from planets in our solar system. Kepler-39b, has a diameter that is 1.2 times that of Jupiter (RJupiter = 6.99 × 107 m), but a mass that is 18 times that ..
An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, Find the ratio ve/vp
in reaching her destination a backpacker walks with an average velocity of 1.34 ms due west. this average velocity
A 4.5- kg box of books is pulled up a 3.66- m-long inclined plank to a height of 1.4 m. What percent of the work is lost to friction
n a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.6 ? 10-17 N during the first 1.9 cm of the tube's length, Find the speed of the electrons when they hit the screen
A 2.0 mg sample of carbon-14 is measured to have an activity of 6.5 x 10^10 Bq. Use this information to determine the half-life of carbon-14 in years.
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 53.1 x 10^5 kg, of which 3.81 x 10^5 kg is fuel. What is the rocket's thrust
a distant galaxy emits light that has a wavelength of 550.5 nm. on earth the wavelength of this light is measured to be
an automobile with a mass of 1000kg including passengers settles 1.0cm closer to thenbspground for every 100kg of
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. estimate the diameter of the pinhole
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