Scientists are studying ways to improve the efficiency of solar cells by studying a process called photon unconversion . In this process , the energy of two can become combined to form a new photon n energy equal to the sum of the two combined ns With this process, abundant infrared radiation са converted into visible light that can be used by SE to produce electricity . Suppose an infrared n with a wavelength of 853 nm were combined nother infrared photon with a wavelength of 935 hat would be the wavelength of the new photon, in nm?

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative