<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
Answer:
A
Explanation:
So a pulse is a part of a mechanical wave, and mechanical waves are energy transfer trough some medium, in this case a stretched spring. So the correct answer is (A) energy only. The pulse cant be transferred into mass.
The highest point of the wheel is the position of the wheel when its potential energy is greatest.
<h3>At what position of the wheel potential energy is greatest?</h3>
The position of the wheel when its potential energy is greatest when it is at the highest point because potential energy depends on the height of an object. If the object is at more height then it has more potential energy and vice versa.
So we can conclude that the highest point of the wheel is the position of the wheel when its potential energy is greatest.
Learn more about energy here: brainly.com/question/13881533
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It would have twice as much potential energy.
Answer: Natural selection is taking place.
Explanation:
As you can see, the lighter colored mice are more visible than their surroundings, so the hawk picks them off one by one. the brown mice on the other hand are less visible, blending in with their surroundings, so they are successful, and pass on the genes that allow them to survive better.
- anonymous