Answer:
I think true..... :))))))))))
Explanation:
a scientific theory is a well substantiated explanation of some aspect of the nature world, based on a body of facts that have been repeatedly confirmed through observation and experiment. search fact-supported theories are not "guesses" but reliable account of the real world .
<u>Answers</u>
<u>part 1</u>
Density of a substance is the ratio of mass of a unit volume of that substance.
Density = mass/volume
volume of a sphere = 4/3× πr³
Volume of the neutron = 4/3 × π × (1×10⁻¹³)³
= 4.18879 × 10⁻³⁹ cm³
mass of a neutron = 1.674929 x 10⁻²⁷ kg
= 1.674929 x 10⁻²⁴ g
density = (1.674929 x 10⁻²⁴)/( 4.18879 × 10⁻³⁹)
= 3.999 × 10¹⁴ g/cm³
Answer to 2 significant figures = 4.0 × 10¹⁴ g/cm³
<u>Part 2</u>
density of neutron star= 4.0 × 10¹⁴ g/cm³
Radius = 0.30 mm = 0.03 cm
volume = 4/3 × π × 0.03³
= 1.13097 × 10⁻⁴ cm³
mass = density × volume
= 4.0 × 10¹⁴ × 1.13097 × 10⁻⁴
= 4.52388 × 10¹⁰ g
Answer to 2 significant figure = 4.5 × 10¹⁰ g
Not sure but a centripetal acceleration.
Answer:
Amplitude = 5 cm
Wavelength = 30 m
Explanation:
Amplitude is the maximum displacement. According to the graph, the maximum height is the maximum displacement which is equal to 5cm.
Wavelength is the same distance between two successive Crest or trough.
From the graph the wavelength is 30 metres.
That is,
Amplitude = 5 cm
Wavelength = 30 m