Speed of the block
A 3.1 g block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 460 m/s, goes completely through the block, emerging at a speed of 220 m/s. What is the speed of the block immediately after the bullet exites?
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The current is 5.50 A. A second resistor is added in series, and the current falls to 4.23 A. What is the resistance of the second resistor?
There is a box which contains a number of three types of object. For simplicity, let us use a triple (a, b, c) to denote the numbers of objects belonging to these three types, and assume that a ? b ? c , where a, b, and c could be any
What speech pattern distinguishes us as individuals?
A mass of 1.62 kg stretches a vertical spring 0.315 m. If the spring is stretched an additional 0.130 m and released, how long does it take to reach the (new) equilibrium position again?
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The tension Tu in the upper (taut) segment of the belt is 170 N, and the flywheel has a clockwise angular acceleration of 1.67 rad/s2. Find the tension in the lower (slack) segment of the belt.
A 170 g block hangs from a spring with spring constant 9.0 N/m. At t=0 s the block is 24 cm below the equilibrium point and moving upward with a speed of 107 cm/s. What are the block's oscillation frequency? What is the block's distance from equi
How would you describe the concept of a worldview? No word limit?
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