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In the figure, a 3.8 kg block is accelerated from rest by a compressed spring of spring constant 650 N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction ?k = 0.241. The frictional force stops the block in distance D = 7.8 m. What is the original compression distance of the spring?
One cubic meter of water flowing over Niagara Falls in New York drops 92.8 meters. how much heat energy would the water have
The scalar product of vectors and is +51.0. Vector has magnitude 9.00 and direction 28.0 west of south. If vector has direction 36.0 south of east, what is the magnitude of.
An Earth satellite moves in a circular orbit 644 km above Earth's surface with a period of 97.40 min, What are the magnitude of the centripetal acceleration of the satellite
A compact 60.00 kg object is attached to one end of a horizontal 40kg uniform steel tube 2.40 m long. What is the distance from the loaded end to the center of gravity of object-tube system?
You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren, At what speed is the ambulance traveling
What is the pressure (in kPa) exerted by an object that has a base which is 2cm by 4cm nd a weight of 45N.
A truck rests on a bridge span whose length between support is 120 feet. Find the upward force exerted by each support pier on the bridge
An aquarium contains a 5-cm layer of water (n = 1.333) floating on top of carbon tetrachloride (n = 1.461). If an angle of incidence into water from the carbon tetrachloride is 20, what is the angle of refraction into the air.
Tarzan has foolishly gotten himself into another scrape with the animals and must be rescued once again by Jane, What is Jane's (and the vine's) angular speed just before she grabs Tarzan
Nichrome wire of cross-sectional radius 0.788 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
A sign (mass 1800kg ) hangs from the end of a vertical steel girder with a cross-sectional area of0.019m2 . Ignore the mass of the girder itself. What is the stress within the girder
Important information about Initial kinetic energy of the object Point A is situated at the bottom of a rough plane which is inclined at 45 degrees to the horizontal. A body of mass 0.5 kg is projected from A along and up the line of greatest slop..
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