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A pressurized cylindrical tank, 5.0 in diameter, contains water which emerges from the pipe at point C, with a velocity of 12 . Point A is 10 above point B and point C is 3 above point B. The area of the pipe at point B is 9×10?2 and the pipe narrows to an area of 2×10?2 at point C. Assume the water is an ideal fluid in laminar flow. The density of water is 1000 . In the figure, the rate at which the water level is falling in the tank, in , is closest to: 8.4 \rm mm/s 12 \rm mm/s 14 \rm mm/s 6.5 \rm mm/s 10 \rm mm/s
A thin film of MgF_2 (n= 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500 nm and 625 nm
A heater coil connected to a 240-Vrms ac line has a resistance of 45. what is the average power used? What is the maximum value of the instantaneous power?
A wooden cube of side 0.30 m has density of 700 kg/m^3 and floats partially submerged in seawater(density = 1025 kg/m^3). what is the total mass of the cube
A wedding ring (of diameter 1.89 cm) is tossed into the air and given a spin, resulting in an angular velocity of 16.9 rotations per second. find the maximum induced potential difference in the ring
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. With what initial velocity were the keys thrown
A certain freely falling object requires 1.10s to travel the last 32 m before it hits the ground. From what height above the ground did it fall.
Two wires are identical, except that one is aluminum and one is nichrome. The aluminum wire has a resistance of 0.21 ?. What is the resistance of the nichrome wire
A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 109 m, What is the area of the sun's image on the paper
The human body can survive a negative acceleration trauma incident (sudden stop) if the magnitude of acceleration is less than 250 m/s^2.
Multiple-Concept Example 7 deals with the concepts that are important in this problem. Find the minimum coefficient of friction necessary to allow the penny to rotate along with the disk
A solid spherical mass M2 = 30 kg and radius 20 cm is concentric with a spherical shell M1 = 60 kg, determine the gravitational force on mass m
A jet plane lands with a speed of 114 m/s and can accelerate at a maximum rate of ?4.20 m/s2 as it comes to rest. what is the minimum time needed before it can come to rest
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