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The homogeneous gate shown in Fig. P2.122 consists of one quarter of a circular cylinder and is used to maintain a water depth of 4 m. That is, when the water depth exceeds 4 m, the gate opens slightly and lets the water flow under it. Determine the weight of the gate per meter of length.
A proton (+1.6 x 10^-19 C) is traveling horizontally at 5.4 x 10^6 m/s south. What is the force of the proton along with direction
A whistle of frequency 520 Hz moves in a circle of radius 80.0 cm at an angular speed of 12.0 rad/s. What are the lowest and highest frequencies heard by a listener a long distance away from the whistle and at rest with respect to the center of th..
The longest stuffed toy ever manufactured is a 420 meter snakemade by Norwegian children. What would be the projectile's initial speed
A 15.0-µF capacitor is charged to 2.4 µC. Find the voltage between the two electrodes of the capacitor under these conditions
An electron enters a region of space containing a uniform 0.0000179-T magnetic field. Its speed is 151 m/s, Find the radius r of the electron\'s path
A spring is hung from the ceiling. A 0.600-kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
a basketball player of height 1.8 m is standing 2.4 m in front of a convex spherical mirror of radius of curvature 4.0
How to find out the elapsed time
A uniform electric field exists in a region among two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 3.20 cm away, in a time 1.36 x 10-8 s. Wh..
A viscous liquid is flowing steadily through a pipe of diameter D. Suppose you replace it by 7 parallel pipes, what is the total rate of flow in the 7 pipes compared to the original flow rate
Consider the Earth and a cloud layer 900 m above the planet to be the plates of a parallel-plate capacitor. what is the maximum charge the cloud can hold
a taut rope has a mass of 0.170 kg and a length of 3.55 m. what power must be supplied to the rope to generate
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