If a water sample contains 2 ppm of dissolved salt, it contains 2 g of salt in every ______________ g of water

Fill in the blank(s) with correct word


million

Physics & Space Science

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In a single-slit diffraction experiment, a beam of monochromatic light passes through a slit of width 11.0 ?m. If the first order dark fringe of the resulting diffraction pattern is at an angle of 4.61°, what is the wavelength of light?

A) 884 nm B) 301 nm C) 602 nm D) 402 nm E) 201 nm

Physics & Space Science

Suppose two flat glass plates 30-cm long are in contact along one end and separated by a human hair at the other end. If the diameter of the hair is 50 ?m, find the separation of the interference fringes when the plates are illuminated by green light, ? = 546 nm

Physics & Space Science

The fact that Venus' atmosphere contains carbon dioxide was discovered:

A) by the Magellan spacecraft. B) in early spectroscopic studies. C) by the Venera spacecraft. D) in radar studies. E) through CCD imagery.

Physics & Space Science

According to the nuclear energy curve, would fusion or fission or neither release nuclear energy from gold [atomic number 79], and why?

A) Fission, because then the reaction products have higher atomic numbers and thus a higher nuclear energy. B) Fusion, because then the reaction product has a higher atomic number and thus a lower nuclear energy. C) Fission, because then the reaction products have lower atomic numbers and thus a lower nuclear energy. D) Neither, because all other elements have higher nuclear energies than carbon. E) Fusion, because then the reaction product has a lower atomic number and thus a higher nuclear energy.

Physics & Space Science