A later observation of the object from question 2 was made and it was discovered that the dark lines are shifted by 15 nm to longer wavelengths
than expected.
a) What does the shift in the wavelength tell us about the motion of the
object?
b) A second star is observed to have its lines shifted by 20 nm to shorter
wavelengths. Which of these two stars is moving the fastest?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material