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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?
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.260 T. estimate the radius of the circular path
x-ray photons of wavelength 0.0248 nm are incident on a target and the compton-scattered photons are observed at 90
Four point charges, q, are fixed to the four corners of a square that is 11.2 cm on a side. An electron is suspended above a point at which its weight is balanced by the electrostatic force due to the four point charges, at a distance of 11 nm abo..
three children are throwing snowballs at each other. child a throws a snowball with a horizontal velocity v. if the
A speedboat moving at 35.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.5 m/s2 by reducing the throttle. How long does it take the boat to reach the buoy?
Two small frogs simultaneously leap straight up from a lily pad. Frog A leaps with an initial velocity of 0.726 m/s, while frog B leaps with an initial velocity of 1.62 m/s
on a day when the speed of sound in air is 340 ms a bat emits a shriek whose echo reaches it .025 s later. how far away
You have to do 2.2 kJ of work to push a 78-kg trunk 3.1 m along a slope inclined upward at 22 degrees , What is the coefficient of friction between trunk and slope
a physics book slides off a horizontal tabletop with a speed of 1.10 . it strikes the floor in 0.350 . ignore air
A small piece of Styrofoam packing material is dropped from a height of 1.80 m above the ground. Until it reaches terminal speed, the magnitude of its acceleration is given by a =g - bv. After falling 0.700 m, the Styrofoam effectively reaches its te..
A 3.6 meter long steel wire has a cross-section area of 0.047 cm2. Obtain the maximum weight that the wire can support
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. Find the angular frequency (omega) of simple harmonic motion
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