Because of moisture-laden walls, climatic circumstances, Paints of lower grade the lowest portion of a house's walls near the floor seem cheap and start to peel off a few years after completion.
<h3 /><h3>How can one minimize that risk?</h3>
we can minimize this risk by
- Avoid getting water on the painted surfaces.
- Control the surrounding surfaces' condensation and humidity.
- Before painting, give the surfaces a thorough cleaning.
- Only paint freshly cleaned surfaces.
- Defend against heat and sunshine on the covered surfaces.
- Pick the appropriate primer and paint.
- Use effective painting techniques.
- Away from the coated surfaces, keep corrosive materials.
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To find the mass and volume of irregularly shaped object. One can use the balance to find the weight, and to find the volume of the object water should be poured in the beaker and note the level of water.
Answer:
Part a)

Part b)

Part c)

Explanation:
Part a)
As we know that there is no external torque on the system of two twins
so here we will use



Part b)
Since angular momentum is conserved here as there is no external torque
so we will have



Part c)
Work done by both of them = change in kinetic energy
so we have




Answer:
speed up
Explanation:
it's sound, not electromagnetic