Answer:
21.28 kg
Explanation:
Density of iron = 7890 kg/m³ =
Mass of iron = 8.7 kg=
Volume of gold = Volume of iron = v
Density = Mass / Volume
Density of gold = 19300 kg/m³=
Mass of iron =
Mass of gold needed to make the new model is 21.28 kg
An observation can basically be described as analyzing something closely and/or taking notice of something.
Answer:
Explanation:
The relationship of intensity:
Intensity: 
radius: 
Power is unknown
Now we can apply the formula
It helps applying force in any direction. Pulley systems rely on the relationship between the load and the effort. It also increase the lifting distance. Useful for getting the drive action to happen in awkward places. The bigger the mechanical advantage the lesser amount of force is needed to be exerted.
Dry air adjacent to the cloud is entrained air is drier than the air within a cloud. The evaporation occurs in the cloud which cools the air. The cooling of air increases its density and creates a downdraft.
<h3>How clouds are formed?</h3>
A cloud can be described as a mass of ice crystals or water drops suspended in the atmosphere. Clouds can be formed when the water condenses in the atmosphere. The sky possesses some quantity of water vapours and it is invisible to us.
Clouds can be formed when an area of air gets cooler until the water vapour there condenses to liquid form. At this point, the air gets saturated with water vapours.
A cloud can never be perfectly adiabatic. Therefore, after mixing the environmental air with the clouds, its boundaries will not stay well defined and this process is called entrainment.
Learn more about cloud formation, here:
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