Physics, 05.05.2020 00:41 NREYESLDS2806
If a helium nucleus scatters at an angle of 120° from the initial direction of motion during an elastic collision with a gold nucleus, calculate the helium nucleus’s final speed, in meters per second. Ernest Rutherford (who was the first person born in New Zealand to be awarded the Nobel Prize in chemistry) demonstrated that nuclei were very small and dense by scattering helium-4 nuclei (4He) from gold-197 nuclei (197Au). During this experiment, the energy of the incoming helium nucleus was 8.00 × 10-13 J, and the masses of the helium and gold nuclei were 6.68 × 10-27 kg and 3.29 × 10-25 kg, respectively (note that their mass ratio is 4 to 197).
Answers: 2
Physics, 21.06.2019 13:00
Explain the doppler effect in terms of frequency, wavelength, and speed.
Answers: 3
Physics, 22.06.2019 01:00
15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?
Answers: 2
Physics, 22.06.2019 09:00
When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.
Answers: 1
Physics, 22.06.2019 11:10
Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.
Answers: 3
If a helium nucleus scatters at an angle of 120° from the initial direction of motion during an elas...
English, 16.11.2020 14:00
Mathematics, 16.11.2020 14:00
Mathematics, 16.11.2020 14:00
Mathematics, 16.11.2020 14:00
Biology, 16.11.2020 14:00
Biology, 16.11.2020 14:00
Mathematics, 16.11.2020 14:00
Mathematics, 16.11.2020 14:00
English, 16.11.2020 14:00
Mathematics, 16.11.2020 14:00
English, 16.11.2020 14:00
Business, 16.11.2020 14:00
Biology, 16.11.2020 14:00