Let s = rate of rotation
<span>Let r = radius of earth = 6,400km </span>
<span>Then solving (s^2) r = g will give the desired rate, from which length of day is inferred. </span>
<span>People would not be thrown off. They would simply move eastward in a straight line while the curved surface of earth fell away from beneath them.</span>
Calculate its average speed in meters per second
Answer:
5.77 m/s
Explanation:
Speed= Distance/Time
Distance= 40+ half of 40= 40+20= 60 m
Time= 8.8+1.6=10.4 s
Average speed= 60/10.4=5.769230769 m/s
Approximately, the average speed is 5.77 m/s
The water in a reservoir behind a hydropower dam is another example of potential energy. The stored energy in the reservoir is converted into kinetic energy (motion) as the water flows down a large pipe called a penstock and spins a turbine.
Physical property
Dissolve
Explanation:
A physical property of salt is that it will dissolve in water.
A salt is an ionic compound consisting of positive ions such as metallic, ammonium and complex ions and negative ions such as acid radicals and complex ions.
The physical property of substance tells us everything about a substance when no change is occurring to its constituents.
- Solubility is an example of physical property of matter.
- Generally, like substances will dissolve one another.
- Salt is an ionic compound, and like water, it is polar.
- Water molecules will aggregate round each salt particle and hydrate them into solution.
Learn more:
Physical property brainly.com/question/10972073
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