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An ore sample weighs 17.5 {\rm N} in air. When the sampleis suspended by a light cord and totally immersed in water, thetension in the cord is 11.2 {\rm N}. Find the total volume of the sample. Find the density of the sample.
A flat (unbanked) curve on a highway has a radius of 260. A car rounds the curve at a speed of 26.0. What is the minimum coefficient of friction that will prevent sliding
Water flowing through a 2.0cm -diameter pipe can fill a 500L bathtub in 4.9min. What is the speed of the water in the pipe
The position of an object connected to a spring varies with time according to the expression x = (5.7 cm) sin(6.8?t). Find the period of this motion
An object at rest on a flat, horizontal surface explodes into two fragments, one five times as massive as the other one. The lighter fragment gains the velocity of 10.0m/s in the left direction right after the explosion.
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery.
When a 14.4-V car battery delivers a current of 60.0 A, the power consumed on its internal resistance is 36.0 W, what is the internal resistance of the battery
a mortar crew is positioned near the top of a steep hill. enemy forces are charging up the hill and it is necessary for
Two large, parallel, metal plates carry opposite charges. They areseparated by 0.1 m and the potential difference between them is500. V. What is the magnitude of the electric field, if it is uniform inthe region between the plates?
The combination of an applied force and a friction force produces a constant total torque of 36.6 N · m on a wheel rotating about a fixed axis. The applied force acts for 6.20 s. During this time, the angular speed of the wheel increases from 0 to..
consider a point p on the viewing screen of a double-slit interference experiment. this point is 45 of the way from the
A 3-kg block is pulled along a FRICTIONLESS surface with a force of 42N. What is the force exerted on the 2-kg block by the 1-kg block
a 76 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. the
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