If the speed of sonu is 60 km per hour, then what is the distance traveled by him in 90 seconds ?

Answer:

First of all the Sun rays fall on the Solar Collector, which is consisted a black absorbing surface (absorber) that absorbs solar radiation, and transfers the heat energy to water flowing through it. After this, heated water is collected in a tank, insulated to prevent heat loss.

DISADVANTAGES

Maintenance is one disadvantage, although most systems don’t require a high degree of care. However, scaling occurs when there are minerals suspended in domestic water, which build up as calcium deposits in the system. Adding water softeners or mild acidic substances such as vinegar can avoid scaling. It only must be done every three to five years, but this can vary depending on the water quality.

Corrosion is another concern. In open loop hydronic solar systems, oxygen can rust any iron or steel part. The plumbing components are more resistant if they’re made of copper, brass, bronze, stainless steel, plastic or rubber. Storage tanks should be lined with glass or plastic to resist corrosion as well.

Also, active systems can overheat if the size of the storage tank isn’t appropriate for the collector. The general rule is that for each square foot of collector, there should be 1.5 gallons of storage. With that in mind, such a disadvantage can be avoided.

ADVANTAGES

Advantages of Solar Water Heaters

The advantages go beyond cost savings and the availability of power, which are also realized with solar electric systems. Here are a few unique perks of home solar water heating products that may convince you to upgrade your home.

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Answer:

The poem begins with the description of a beautiful bird, which is called a bird of paradise by the speaker “A giant bird- / of-paradise / has climbed the bar.” Then, the speaker describes the destructive moment, which has destroyed everything in a place that looks like paradise.

Answer:

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Answer:

Oak is a discontinued programming language created by James Gosling in 1989, initially for Sun Microsystems' set-top box project. The language later evolved to become Java. The name Oak was used by Gosling after an oak tree that stood outside his office

Explanation:

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Answer:

Oak

Oak is a discontinued programming language created by James Gosling in 1989, initially for Sun Microsystems' set-top box project. The language later evolved to become Java. The name Oak was used by Gosling after an oak tree that stood outside his office.

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Answer:

Machine will get 63 rackets and profit is 1260

craft man will get 36 rackets and profit is 360