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3 years ago

Metals such as aluminum can be formed into thin sheets because they are

Physics

2 answers:

Korvikt [17]3 years ago

8 0

Answer:

They are malleable.

Explanation:

Malleability is the property of metals that causes them to be able to be formed into thin sheets without breaking.

All metals are malleable.

The reason why metals are malleable is because the atoms in the metals have a stable structure and hence, when beaten, the atoms can move freely among each other and maintain their structure.

neonofarm [45]3 years ago

5 0

Answer:

Metals such as aluminum can be formed into thin sheets because they are Malleable

Explanation:

A malleability is the property of a material that describes its ability to be deformed under pressure or compressive stress such that it can be moved about spread out without breaking (analogy dough in bread making). As such a malleable metal can be made into flat thin sheets by applying compressive stress such as hammering.

In the process, malleable metals such as gold can be flattened into a metal leaf, such as gold leaf

Malleability is primarily present in metals as nonmetals are likely to be brken when subjected to compressive stresses

Aluminium, gold and silver are highly malleable, while zinc is malleable between the temperatures of 100 °C and 200 °C.

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A 49.6-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.584 and 0.399,

NISA [10]

Answer:

(a) Force must be grater than 283.87 N

(B) Force will be equal to 193.945 N

Explanation:

We have given mass of the crate m = 49.6 kg

Acceleration due to gravity $g=9.8m/sec^2$

Coefficient of static friction $\mu _s=0.584$

Coefficient of kinetic friction $\mu _k=0.399$

(a) Static friction force is given by $F_S=\mu _smg=0.584\times 49.6\times 9.8=283.8707N$

So to just start the crate moving we have to apply more force than 283.87 N

(B) This force will be equal to kinetic friction force

We know that kinetic friction force is given by $F_k=\mu _kmg=0.399\times 49.6\times 9.8=193.945N$

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3 years ago

A (blank) is a point on a standing wave that appears to be stationary

Vikentia [17]

Hi! Your answer would be "node"

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3 years ago

A 70.0 kg person climbs stairs, gaining 3.90 meters in height. Find the work done (in J) to accomplish this task.

Veronika [31]

Answer:

Work done, W = 2675.4 J

Given:

mass, m = 70.0 kg

height, H = 3.90 m

Solution:

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Work done, W = mgH

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Oksana_A [137]

Answer:

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3 years ago