Answer:
Th similarities between the black hole and the neutron star is that they are formed from dead (dying) starts. But they come from different parent stars, if the parent star is 1.4 times the mass of the sun, a neutron star will be formed, but if the parent star is twice the mass of the sun a black hole is formed.
Explanation:
A black hole is defined as an area of space whereby the matter is so compacted that nothing can escape from it. This area is called <em>event horizon. </em>Black holes are formed when an enormous star dies in z supernova. They weigh at least twice the sun's mass, and their mass is directly proportional to their radii.
Neutron stars are created during supernova and maintained by a neutron called <em>degeneracy pressure.</em> Neutron star has a small radius, typically 30 km, with a very high density made up of compacted neutrons.
Answer:
The criteria that we should adopt which selecting a fuel for our future energy demands shall be:
1) The yield of the fuel should be sufficient that it yields energy amount that is sufficient in it's quantity to meet the demand.
2) It should not release harmful gases into the atmosphere that may cause global warming or ozone depletion.
3) The disposal of the waste that remains after their utilization should not be harmful to the ground or environment in general.
4)The cost of the energy produced should not be excessively high.
5) The fuel should not be locally distributed that adds to the logistics and distribution charges it should be uniformly available.
A. Physical properties are used to describe matter.
Physical characteristics include color, shape, and mass, among other descriptors. Chemical properties describe how matter changes its chemical composition. Since chemical changes cause the matter to have a different identity, the physical properties describe the type of matter.
Weather predictions can be inaccurate sometimes because weather predicting depends on how many eyes are there in the upper atmosphere. Thus, weather is always constantly moving. There are lots of measurements to be used in forecasting the weather just like measuring of temperature the timid and the humidity, air pressure, the direction wind and its speed, dryness, and rain. Also, there are planes, balloons used for weather and space station just to spread data to weather location on the ground but still there are times that forecasted weather may be often wrong although Meteorologists explain the computer-generated predictions with a comparison between dissimilar scientific models and squeeze them by relying on the flow of real-time data coming from the field.
<span>We don’t know what the weather may bring because we don’t hold it. Therefore, it just normal that everybody can be inaccurate in predicting what will be happening.</span>
