A block of 9.0 kg is attached to three springs through a mas…
A block of 9.0 kg is attached to three springs through a mass-less bar as shown above. The springs have spring constants of k1, k2, and k3 of 120 N/m, 240 N/m, and 360 N/m, respectively . If the block is shifted by 6.0 cm and let go, what is the frequency (in Hz) of this simple harmonic oscillator?
Read DetailsA pipe with water flowing through it has a rectangular cross…
A pipe with water flowing through it has a rectangular cross-section of length, L, and width, W. It encounters another rectangular pipe with one-third of its original length but twice the width. What is the ratio of velocity in the second pipe compared to the first pipe?
Read DetailsA block of mass 780 g is resting between two edges with empt…
A block of mass 780 g is resting between two edges with empty space between them as shown above. A 24.0 g bullet is shot underneath the block at an unknown speed and goes through the block, leaving at 60.0 m/s. The block then “jumps” to a height of 42.0 cm as a result. What was the speed of the bullet (in m/s)?
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