In a double-slit experiment, the slit separation is 3 × 10-5…

In a double-slit experiment, the slit separation is 3 × 10-5 m. The interference pattern is created on a screen that is 2 m away from the slits. If the 7th bright fringe on the screen is 0.1 m away from the central maximum, what is the wavelength of the light? Express the answer in nanometers, nm.

For your candle making business, you need to purchase a larg…

For your candle making business, you need to purchase a large amount of unique scented wax. You plan to charge $9.95 per large candle. The wax you need is available from a U.S. Supplier for $24.00lb and also from a German supplier. The cost is €9.20/kg. If the current exchange rate is $1= €0.76, and 1kg=2.20lb. 1) Which supplier is giving the better price, US, German, or Equal? [1] – enter only a single word, US, German or Equal 2) What is the best price? [2] – enter number only with two places after the decimal- example: 1.11