Estimate the diameter of the beam
A helium neon laser emits light that has a wavelength of 632.8 nm. The circular aperature through which the beam emerges has a diameter of 0.800 cm. Estimate the diameter of the beam 20 km from the laser.
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A helium neon laser emits light that has a wavelength of 632.8 nm. The circular aperature through which the beam emerges has a diameter of 0.800 cm. Estimate the diameter of the beam 20 km from the lasear.
A 15-kg steel gas tank holds 300 L of liquid gasoline, having a density of 800 kg/m3. If the system is decelerated with 6 m/s2 what is the needed force?
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