Brittle branches on robinia

Brittle branches on robinia
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Typically, plastic becomes brittle with age. So how come vinyl records are still playable after all these years?

Description : Typically, plastic becomes brittle with age. So how come vinyl records are still playable after all these years?

Last Answer : Records are made out the same material your plumbing pipes are with some special additives. PVC itself is made to last a very long time. Did you know that the first cylinders Edison ... historically and presently. https://cen.acs.org/articles/94/i24/Groovy-chemistry-materials-science-behind.html

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Description : What are some great hair masks to treat dry,brittle blonde hair?

Last Answer : answer:If nothing else, it would make a tasty omelette. I’m not sure that the olive (oil) and the honey will mix particularly well.

Does semi-modern auto glass get brittle as it ages?

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Description : Why did the green "leaves on my mini lemon cypress plant become very brittle despite weekly watering?

Last Answer : almost sounds like it burning up in too much sun. Mayb call the florist.

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evergreens brittle after dog urinated on them

Description : evergreens brittle after dog urinated on them

Last Answer : Your dog had no effect on them. Your question is alittle vague-- what plant, where, symptoms, growing details. ???

why is my maiden hair fern turning brown and becoming brittle

Description : why is my maiden hair fern turning brown and becoming brittle

Last Answer : Check to make sure it is getting enough water. it likes lots of water. Is it planted in partial or full shade. It should be.

What is so brittle that even to name it breaks it? -Riddles

Description : What is so brittle that even to name it breaks it? -Riddles

Last Answer : Silence.

What is brittle diabetes?

Description : What is brittle diabetes?

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What do you mean by a brittle substance? Give any two examples.

Description : What do you mean by a brittle substance? Give any two examples.

Last Answer : What do you mean by a brittle substance? Give any two examples.

What is hard and brittle iron that is formed into a particular shape by pouring the liquid metal into a mold?

Description : What is hard and brittle iron that is formed into a particular shape by pouring the liquid metal into a mold?

Last Answer : I think it would be cast

Is a brittle star a fish?

Description : Is a brittle star a fish?

Last Answer : Starfish are not fish - they are echinoderms with externalskeletons.

Why are ionic solids hard and brittle?

Description : Why are ionic solids hard and brittle?

Last Answer : Ionic solids are brittle and hard as they are bonded with electrostatic bonds.

Why are ionic solids hard and brittle?

Description : Why are ionic solids hard and brittle?

Last Answer : Ionic solids are brittle and hard as they are bonded with electrostatic bonds.

'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property

Description : 'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property

Last Answer : (3) has higher elasticity Explanation: A shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Steel is an alloy made by combining iron and other elements, the most common of these being carbon.

The main purpose of an electric space heater installed in a large AC generator is to _____________. A. keep the lube oil warm for quick starting B. prevent moisture from condensing in the windings when the machine is shutdown C. prevent the windings from becoming brittle D. prevent acidic pitting of the slip rings

Description : The main purpose of an electric space heater installed in a large AC generator is to _____________. A. keep the lube oil warm for quick starting B. prevent moisture from condensing in the ... is shutdown C. prevent the windings from becoming brittle D. prevent acidic pitting of the slip rings

Last Answer : Answer: B

The main purpose of an electric space heater installed in a large AC generator is to _____________. A. prevent the windings from becoming brittle B. prevent moisture from condensing in the windings during shutdown C. prevent acidic pitting of the slip rings D. keep the lube oil warm for quick starting

Description : The main purpose of an electric space heater installed in a large AC generator is to _____________. A. prevent the windings from becoming brittle B. prevent moisture from condensing in the windings during ... C. prevent acidic pitting of the slip rings D. keep the lube oil warm for quick starting

Last Answer : Answer: B

Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?

Description : Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?

Last Answer : For ductile materials, theories of failure used are maximum shear stress theory, and maximum energy of distortion theory; while for brittle materials, theory of maximum principal stress, and maximum strain are used.

List at least two factors that promote transition from ductile to brittle fracture.

Description : List at least two factors that promote transition from ductile to brittle fracture.

Last Answer : Manner of loading, and the rate of loading promote transition from ductile to brittle frac¬ture. A machine member may have ductile failure under static loading but may fail in brittle fashion when the ... testing speed but if load is applied at a high velocity then failure may be brittle.

Thermosetting resins/polymers as compared to thermoplastic ones are (A) Soluble in all organic solvents (B) More brittle (C) Formed by addition polymerisation only (D) Easily reshaped & reused

Description : Thermosetting resins/polymers as compared to thermoplastic ones are (A) Soluble in all organic solvents (B) More brittle (C) Formed by addition polymerisation only (D) Easily reshaped & reused

Last Answer : (B) More brittle

Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Description : Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Last Answer : (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Thermoplastic resins usually(A) Remain hard as long as they are hot(B) Cannot be reclaimed from waste(C) Permanent setting resins(D) Less brittle than thermosetting resins

Description : Thermoplastic resins usually (A) Remain hard as long as they are hot (B) Cannot be reclaimed from waste (C) Permanent setting resins (D) Less brittle than thermosetting resins

Last Answer : (D) Less brittle than thermosetting resins

Polystyrene is a __________ plastic at room temperature. (A) Ductile (B) Brittle (C) Malleable (D) None of these

Description : Polystyrene is a __________ plastic at room temperature. (A) Ductile (B) Brittle (C) Malleable (D) None of these

Last Answer : (B) Brittle

White cast iron is not (A) Malleable(B) Whitish in color(C) Brittle(D) Strong and hard

Description : White cast iron is not (A) Malleable (B) Whitish in color (C) Brittle (D) Strong and hard

Last Answer : (A) Malleable

Zinc is highly __________ at room temperature. (A) Ductile (B) Resistant to atmospheric corrosion (C) Malleable (D) Brittle

Description : Zinc is highly __________ at room temperature. (A) Ductile (B) Resistant to atmospheric corrosion (C) Malleable (D) Brittle

Last Answer : (B) Resistant to atmospheric corrosion

A material capable of undergoing large permanent deformation, when subjected to compression is termed as (A) Malleable (B) Ductile (C) Brittle (D) None of these

Description : A material capable of undergoing large permanent deformation, when subjected to compression is termed as (A) Malleable (B) Ductile (C) Brittle (D) None of these

Last Answer : (A) Malleable

Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Description : Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Last Answer : (D) Soft

The metals occuring at the lower most position in the electromotive series (A) Do not resist corrosion (B) Resist corrosion very strongly (C) Are very brittle (D) Are heat insulators

Description : The metals occuring at the lower most position in the electromotive series (A) Do not resist corrosion (B) Resist corrosion very strongly (C) Are very brittle (D) Are heat insulators

Last Answer : (B) Resist corrosion very strongly

Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Description : Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Last Answer : (D) Soft

Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable

Description : Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable

Last Answer : (A) Brittle

Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing. (A) Oxygen (B) Arsenic (C) Antimony (D) Bismuth

Description : Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing. (A) Oxygen (B) Arsenic (C) Antimony (D) Bismuth

Last Answer : (D) Bismuth

. A material capable of undergoing large permanent deformation, when subjected to tension is termed as (A) Friable (B) Ductile (C) Brittle (D) None of these

Description : . A material capable of undergoing large permanent deformation, when subjected to tension is termed as (A) Friable (B) Ductile (C) Brittle (D) None of these

Last Answer : (B) Ductile

Duriron is (A) Acid resistant, brittle and very hard (B) High silicon iron (C) Prone to breakage due to thermal expansion because of its very high co￾efficient of thermal expansion (D) All (A), (B) and (C)

Description : Duriron is (A) Acid resistant, brittle and very hard (B) High silicon iron (C) Prone to breakage due to thermal expansion because of its very high co￾efficient of thermal expansion (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Very high sulphur in pig iron makes (A) Its casting unsound (B) Its hard and machinable (C) Its brittle and malleable (D) All (A), (B) & (C)

Description : Very high sulphur in pig iron makes (A) Its casting unsound (B) Its hard and machinable (C) Its brittle and malleable (D) All (A), (B) & (C)

Last Answer : (A) Its casting unsound

White cast iron as compared to grey cast iron is (A) More durable (B) Very brittle (C) Very hard (D) All (A), (B) & (C)

Description : White cast iron as compared to grey cast iron is (A) More durable (B) Very brittle (C) Very hard (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Pick out the wrong statement (A) Hardening makes the steel more brittle (B) High alloy steels contain more than 50% alloying element (C) 18/8 stainless steel is a magnetic steel (D) Both (B) and (C)

Description : Pick out the wrong statement (A) Hardening makes the steel more brittle (B) High alloy steels contain more than 50% alloying element (C) 18/8 stainless steel is a magnetic steel (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Presence of nitrogen in steel (A) Makes it brittle (B) Increases its strength (C) Increases its hardness (D) Is desirable

Description : Presence of nitrogen in steel (A) Makes it brittle (B) Increases its strength (C) Increases its hardness (D) Is desirable

Last Answer : (A) Makes it brittle

Cast iron is (A) Used for making shock resisting parts (B) Manufactured in cupola and is brittle (C) Having compressive strength more than its tensile strength(D) All (A), (B) & (C)

Description : Cast iron is (A) Used for making shock resisting parts (B) Manufactured in cupola and is brittle (C) Having compressive strength more than its tensile strength (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)