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A garden hose with an internal diameter of 2.0 cm is connected to a (stationary) lawn sprinkler that consists merely of an enclosure with 30 holes, each 0.18 cm in diameter. If the water in the hose has a speed of 0.83 m/s, at what speed does it leave the sprinkler holes?
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 30 m radius of curvature
A uniform door weighs 46-N and is 0.9 m wide and 2.5 m high. What is the magnitude of the torque because of the door's own weight about a horizontal axis perpendicular to the door and passing through a corner.
A person sitting at a desk which is 51.2 m east and 9.9 m north of the point mid-way between the alarms does not hear them when they sound. What is the lowest frequency that the alarms can be sounding
A uniform solid sphere rolls without slipping down a 15° inclined plane. What is the acceleration of the sphere's center of mass
A crate is sliding down an inclined plane. The coefficient of kinetic friction between the crate and the plane is 0.3, the mass of the crate is 30 kg, and the angle of incline is 20°.
A ball rolls across a floor with an acceleration of 1.00m/s^2 in a direction opposite to its velocity. The ball ahs a velocity of 4.00m/s, What was the inital speed of the ball
If a material increases its length from 130 m to 132.60 m when its temperature is rasied 155 degrees C, what is its coefficient of linear expansion
An alpha particle (doubly ionized He atom ) is created in a vacuum in the center between our pair of Helmholtz coils horizontal (in the xy plane), how fast would the particle be traveling
A proton and electron are far away from each other, how quick would the electron be going in the orbit if we assume centripetal motion?Therefore, what is the electrnss kinetic energy
A 2.62 kg mass attached to a light string rotates on the horizontal, frictionless table. The radius of the circle is 0.4207 m, and string can support a mass of 14.70 kg before breaking.
A hollow metal sphere has 6 cm and 10 cm inner and outer radii, respectively, What are the strength and direction of the electric fi eld at points 4, 8, and 12 cm from the centre
A water wave passing a point causes a cork to bob up and down through a total distance of 1 m, completing one cycle every 1.5 sec
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