Answer:
Light source
Explanation:
The Sun is a light source because it releases energy from inside itself. The Moon isn't a light source. It doesn't produce energy inside itself, and instead just reflects light from the Sun.
Answer:
b
Explanation:
a Gravity pulls the rock toward the center of Earth.
b The forces between you and the rock are balanced.
c The force of your push is greater than the opposing force.
d There is no friction to help you move the object.
The correct answer would be that <u>the forces between you and the rock are balanced.</u>
<em>In order to get the rock rolling, both the frictional force between the rock and the surface on which it stands as well as the gravitational force acting on its mass must be exceeded. If the applied force balances these forces or falls short, the rock will not move.</em>
The correct option is b.
Answer:
Explanation:
A scenario in which an authoritarian leadership would be beneficial is in law enforcement in emergency cases (that has to do with public safety or national security) without the bureaucratic bottlenecks of the legislature and judiciary. For example, the recent coronavirus pandemic, authoritarian leaderships would find it easier to enforce the laws on wearing of masks and also prevent producers of personal protective equipment (PPE) from unreasonably inflating prices of there PPEs.
As explained above, it would work well because there will be no legislative bottleneck that will start a hearing at the expense of public safety neither will there be a court that will stall the process at the same expense.
The risks here is that businesses (in this case that of producing PPEs) may find it difficult to survive since the "tone" of the pricing of PPEs will now be determined by government. It may even hinder healthy business competition. It may also lead to production of substandard PPEs in order to generate enough profit (since the main aim of any business is to generate profit).
Explanation:
Loudness of sound is a measure of response of sound to our ear. Loudness of sound is not simply the energy reaching the human ear, but it also tells about the sensitivity of human ear detecting this energy. Loudness of sound is measured in decibel (dB). As energy reaching the ear depends on square of amplitude, loudness of sound depends on various factors namely,
(i) Amplitude of sound waves
(ii) Sensitivity of ear
(iii) Distance from the source of the sound and the listener.
