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Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 23.0m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation of the hose until the water takes 3.10s to reach a building 37.0m away. You can ignore air resistance; assume that the end of the hose is at ground level.
How high above the ground does the water strike the building?
How fast is it moving just before it hits the building?
A wheel has a radius of 3.6m. How far (path length) does a point on the circumference travel if the wheel is rotated by angles of 30°, 30 rad, and 30 rev, respectively.
A convex lense of focal length 18 cm is used as a magnifying glass. at what distance from a tiny insect must you hold this lense to get a magnification of 3.
A pendulum consists of a 4.98kg mass on the end of a 0.873 m string. The mass is pulled aside so the string makes an initial angle with the vertical of 12.5o. The mass is then released with initial speed of 2.10m/s upward and perpendicular to the rop..
A force vector has a magnitude of 594 newtons and points at an angle 37o of below the positive x axis. What are (1) the x scalar component and (2) the y scalar component of the vector.
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What is magnitude of the current
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The pilot of an aircraft wishes to fly due west in a 34.60 km/h wind blowing toward the south. The speed of the aircraft in absence of a wind is 145 km/h.
A girl delivering newspapers covers her route by traveling 9.99 blocks west, 4.00 blocks north, and then 1.00 blocks east
A person weighs 689 N and the head is 53 N the average density of the person is 1010 kg/cubed meters how much force in N is required to keep a persons head out of the water.
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravitational attraction.
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