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sashaice [31]
2 years ago
15

_____ bodies help in reducing friction

Physics
2 answers:
Tju [1.3M]2 years ago
8 0

Explanation:

Friction can be reduced by

Polishing the rough surface.

Oiling or lubricating with graphite or grease the moving parts of a machine

Providing all bearings or wheels between the moving parts of a machine or vehicles reduce friction and allow smooth movement as rolling friction is less than sliding friction.

amm18122 years ago
6 0
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Complete the following sentence.
notka56 [123]

Could it be "Scientific research"?

5 0
3 years ago
___ is produced when grains of quartz in sandstone are welded together when the rock is subjected to high temperatures.
Galina-37 [17]
Quartzite is produced when grains of quartz in sandstone are welded together when the rock is subjected to high temperatures.  Quartzite<span> or Quarzit is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone. </span><span>It is formed when a quartz-rich sandstone is altered by the heat, pressure, </span>
3 0
3 years ago
which of the following statements best explains how consumers determine growth in technological areas
Mrac [35]
If these were the missing choices:

a)      Consumers fill out questionnaires concerning their need for new products.

b)      Consumers vote for politicians who decide which kind of research to support

c)       Consumers decide what to buy and what not to buy

d)      Consumers influence the decisions of private foundations by deciding where to donate money.


My answer would be: c)       <span>Consumers decide what to buy and what not to buy</span>

Every growth is based on the demand of the people. If a good or service is needed then its demand will increase. If a good or service is not needed then its demand will decrease until such time that said good or service will be eliminated. 

6 0
3 years ago
Because CMB radiation was _____ throughout the universe, scientists can only relate the source to the big bang.
erma4kov [3.2K]

Answer: 1 The correct answer is that CMB radiation was spread uniformly throughout the whole universe.This was related to big band theory because this theory predicts that the universe was a very hot place and as it cooled down it should have been filled with laterally the remnant heat over from the Big Bang called as cosmic microwave background.

Answer: 2 CMB radiation was discovered accidentally when Penzias and Wilson were performing some experiment and they noticed a ' hum' noise that was constantly detected by the antenna even after removing all the disturbing sources.

Then it was realized that it is cosmic microwave background radiation.

6 0
2 years ago
With energy, changes in the physical world are possible. These can be a change in speed, a change in direction, a change from co
laiz [17]
True because energy can change its speed because of temperature and also its direction
3 0
3 years ago
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