- The Wavelength Of The Four Balmer Series Lines For Hydrogen Are Found To Be 410 5 434 6 486 4 And 656 5 Nm What Aver 1 (29.08 KiB) Viewed 9 times
Sunlight above the Earth's atmosphere has an intensity of 1.36 kW/m². If this is reflected straight back from a mirror that has only a small recoil, the light's momentum is exactly reversed, giving the mirror twice the incident momentum. (a) Calculate the force per square meter of mirror (in N/m²). N/m² (b) Very low mass mirrors can be constructed in the near weightlessness of space, and attached to a spaceship to sail it. Once done, the average mass per square meter of the spaceship is 0.102 kg. Find the acceleration (in m/s²) of the spaceship if all other forces are balanced. m/s² (c) How fast (in m/s) is it moving 24 hours later? (Assume the spaceship started from rest.) m/s
A physicist is watching a 15-kg orangutan at a zoo swing lazily in a tire at the end of a rope. He (the physicist) notices that each oscillation takes 4.70 s and hypothesizes that the energy is quantized. (a) What is the difference in energy in joules between allowed oscillator states? (b) What is the value of n for a state where the energy is 4.10 J? (c) Can the quantization be observed? O No. Energy difference is too small and n is too large. O No. Energy difference is too large and n is too small. O Yes. Energy difference is large enough. O Yes. n is large enough.