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Water flows over a broad-crested weir that has a width of 4 m and a height of Pw = 1.5 m. The free-surface well upstream of the weir is at a height of 0.5 m above the surface of the weir. Determine the flowrate in the channel and the minimum depth of the water above the weir block.
A sustained force of 52N moves a model airplane 22m along its runway to provide the required speed for takeoff
a 0.02 kg lead bullet traveling 200 m/s strikes an armor plate and comes to a stop. If all of its energy is converted to heat that it absorbs, what is the temperature change
The United States and South Korean soccer teams are playing in the first round of the World Cup. find its velocity at the time of interception
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
After an eye examination, you put some eyedrops on your sensitive eyes. The cornea (the front part of the eye) has an index of refraction of 1.38, What is the minimum thickness of the film of eyedrops on your cornea
a bridge is made with segments of concrete 94 m long at the original temperature. if the linear expansion coefficient
a car initially traveling at 100 meters per second is decelerated at 5 meters per second squared until it comes to rest 20 second later. how far does the car travel befor it stops
The flux through a hollow uncharged box is 62 Nm2/C. The box is a cube with length 20 cm. How much charge is inside the box
Jane, looking for Tarzan, is running at top speed (5.2m/s ) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward
A woman starts to swim directly across a 5.0-km-wide river. Her speed with respect to the water is 1.3 m/s. How much time does it take her to cross the river
A bullet of massm1 is fired horizontally with a speedv into the bob of a ballistic pendulum of massm2. Find the maximum height h attained by the bob
When two identical ions are separated by a distance of 8.6×10?10 m, How many electrons are missing from each ion
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