A 60.0 kg pole vaulter running at 12.0 ms vaults over the, Ask an Expert

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Q1. A 60.0 kg pole vaulter running at 12.0 m/s vaults over the bar. Assume that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?

Q2. A double-slit experiment is set up using red light (l = 706 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would produce a dark fringe at an identical location on the screen?

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