How did Robert fulton built his own lead pencils and rockets?

How did Robert fulton built his own lead pencils and rockets?
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The metal used for making air crafts and rockets is – (1) Lead (2) Aluminium (3) Nickel (4) Copper

Description : The metal used for making air crafts and rockets is – (1) Lead (2) Aluminium (3) Nickel (4) Copper

Last Answer : (3) Nickel Explanation: Nickel-based super alloys are an unusual class of metallic materials with an exceptional combination of high temperature strength, toughness, and resistance to degradation in ... These materials are widely used in aircraft and power-generation turbines, rocket engines, etc.

The metal used for making aircrafts and rockets is (1) Lead (2) Aluminium (3) Nickel (4) Copper

Description : The metal used for making aircrafts and rockets is (1) Lead (2) Aluminium (3) Nickel (4) Copper

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Why were pencils ever made with lead if it is bad for us?

Description : Why were pencils ever made with lead if it is bad for us?

Last Answer : A long time ago, people didn´t know that lead was bad for us. Sothey used what they found because it worked. Then it made peoplesick. So now we use graphite.

Are lead pencils poisonous?

Description : Are lead pencils poisonous?

Last Answer : Despite the word lead, there is no lead metal in a lead pencil. Graphite is used, which is a minimally-toxiccarbon based substance.

Lead pencils are made of?

Description : Lead pencils are made of?

Last Answer : Graphite - an allotrope of carbon

The element used in lead pencils is-----? A. Zinc B. Lead C. Carbon (Answer) D. Tin

Description : The element used in lead pencils is-----? A. Zinc B. Lead C. Carbon (Answer) D. Tin

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Percentage of lead in lead pencils is (1) 0 (2) 31-66 (3) 40 (4) 80

Description : Percentage of lead in lead pencils is (1) 0 (2) 31-66 (3) 40 (4) 80

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Which one of the following is an example of a customer in an organizational market ? 1. a homemaker who buys detergent 2. a consumer who hires a solicitor 3. a shop owner who buys pencils fo ruse in his shop 4. a plant manager who buys petrol for her personal car 5. none of these

Description : Which one of the following is an example of a customer in an organizational market ? 1. a homemaker who buys detergent 2. a consumer who hires a solicitor 3. a shop owner who buys pencils fo ruse in his shop 4. a plant manager who buys petrol for her personal car 5. none of these

Last Answer : a plant manager who buys petrol for her personal car

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Description : Which one of the following is an example of a customer in an organisational market? A)a homemaker who buys detergent B)a consumer who hires a solicitor C)a shop owner who buys pencils for use in his shop D)a plant manager who buys petrol for her personal car

Last Answer : D)a plant manager who buys petrol for her personal car

First Computer mouse was built by_______ A. Douglas Engelbart B. William English C. Robert Zawacki D. Von Neumann

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Why did Robert E Lee lead the Confederate Army into Maryland in the Battle of Antietam?

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If humans were the size of hamsters would our rockets for space travel be much smaller?

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Bottle Rockets, Fireworks or Firecrackers?

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Used as fuel in rockets and jets ?

Description : Used as fuel in rockets and jets ?

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Why don't NASA's Rockets burn up while falling back through earths atmosphere?

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Last Answer : The rockets have heat cells on the rocket

Why are space shuttles preferred over rockets?

Description : Why are space shuttles preferred over rockets?

Last Answer : Space shuttles are rockets, however they were intended to be mostly reusable while other rockets are totally disposable.However the space shuttle is no longer being used: the design is considered ... and deteriorating faster than expected, and they were no longer considered safe to continue flying.

How heavy are rockets?

Description : How heavy are rockets?

Last Answer : What is the answer ?

What are of the jobs rockets do now?

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Where is the training center for the Houston Rockets team?

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Why were Homer's acts in building rockets In the movie October Sky a rebellion?

Description : Why were Homer's acts in building rockets In the movie October Sky a rebellion?

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WHICH terms refers to the efficiency of a rockets engine?

Description : WHICH terms refers to the efficiency of a rockets engine?

Last Answer : Specific impulse

Do model rockets come with glue also?

Description : Do model rockets come with glue also?

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Are model rockets safe for children?

Description : Are model rockets safe for children?

Last Answer : Yes, I would say based on my research, model rockets are safe for children. The site, http://en.wikipedia.org/wiki/Model_rocket, quotes, "Model rocketry is a safe and widespread hobby."

(4) Liquid Hydrogen + Liquid Oxygen Explanation: LOX and liquid hydrogen, used in the Space Shuttle orbiter, the Centaur upper stage of the Atlas V, Saturn V upper stages, the newer Delta IV rocket, the H-IIA rocket, and most stages of the European Ariane rockets. Liquid fueled rocicets have higher specific impulse than solid rockets and are capable of being throttled, shut down, and restarted. Only the combustion chamber of a liquid fueled rocket needs to withstand high combustion pressures and temperatures and they can be regeneratively cooled by the liquid propellant.

Description : (4) Liquid Hydrogen + Liquid Oxygen Explanation: LOX and liquid hydrogen, used in the Space Shuttle orbiter, the Centaur upper stage of the Atlas V, Saturn V upper stages, the ... to withstand high combustion pressures and temperatures and they can be regeneratively cooled by the liquid propellant.

Last Answer : The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation

Plants get their light from the …………………… . (a) rockets (b) asteroids (c) stars (d) sun

Description : Plants get their light from the …………………… . (a) rockets (b) asteroids (c) stars (d) sun

Last Answer : (c) stars

The heavenly bodies that do not twinkle are called ………………. . (a) planets (b) stars (c) rockets

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For what purpose are rockets used in space travel?

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Last Answer : 1. Very powerful rockets are used to send a spacecraft into space. 2. A tremendous quantity of fuel is burnt in rockets so that spacecraft weighing thousands of tons may be launched into space.

Why rockets using liquid hydrogen have higher specific impulse compared to liquid hydrocarbon ?

Description : Why rockets using liquid hydrogen have higher specific impulse compared to liquid hydrocarbon ?

Last Answer : Liquid hydrogen has higher burning velocity.

What are rockets?

Description : What are rockets?

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Which of the engine is used for fighter bombers?  a. Turbojet  b. Pulsejet  c. Rockets  d. Ramjet

Description : Which of the engine is used for fighter bombers?  a. Turbojet  b. Pulsejet  c. Rockets  d. Ramjet

Last Answer : Turbojet

The fuel used in rockets is:

Description : The fuel used in rockets is:

Last Answer : Liquid oxygen, nitrogen tetroxide, and hydrogen peroxide

How To Make Popsicle Rockets

Description : How To Make Popsicle Rockets

Last Answer : Ingredients: -Red juice (red raspberry, cherry, cranberry) -Blue juice (blue Kool Aid, Gatorade, blue raspberry) -White juice (lemonade, coconut juice drink) -Red string licorice for fuse -3 oz ... or 3-inch string of licorice into each popsicle. Freeze until hard. Peel off paper cups to serve.

Which of the following could be used as fuel in propellant or rockets ? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

Description : Which of the following could be used as fuel in propellant or rockets ? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

Last Answer : Liquid Hydrogen + Liquid Oxygen

Pencils versus pens? When was the last time you used a pencil? Could you even find one?

Description : Pencils versus pens? When was the last time you used a pencil? Could you even find one?

Last Answer : I use both. Pencils are more practical for taking notes, because I can erase it if I make some mistakes in writing. I have only two pens, and use only one of them on occasion. I have several wooden pencils, used for drawing, though I don’t draw that often.

Do you have a recommendation for a brand of colored pencils?

Description : Do you have a recommendation for a brand of colored pencils?

Last Answer : go to Blick This is a Faber-Castell Polychromos Pencil Set about $100.00 There cheaper ones and there are more expensive.

Do you still use pencils or are you an ink person?

Description : Do you still use pencils or are you an ink person?

Last Answer : answer:Moleskin and pen. I can write way faster than I can peck on a screen. And my notebook doesn’t crash.

What is your favourite free online tutorial about sketching using pencils?

Description : What is your favourite free online tutorial about sketching using pencils?

Last Answer : I’m not sure if this qualifies, but my friend Sean does hand lettering and has a book and some online tutorials. He starts in pencil, then adds ink – so that’s why I’m unsure if it will meet your criteria. www.SeanWes.com/learn

Sharpen your pencils, wordsmiths, it's time for another round of ask-public phrases.

Description : Sharpen your pencils, wordsmiths, it's time for another round of ask-public phrases.

Last Answer : answer:Category: Internet Love “I would totally delete my online profile for you baby”

Why are number 2 pencils the standard for a lot of test?

Description : Why are number 2 pencils the standard for a lot of test?

Last Answer : One day someone had to make a decision, and they made a shitty decision… ;)

Where do pencils go for vacation? -Riddles

Description : Where do pencils go for vacation? -Riddles

Last Answer : Pencil-vania XD.

A boy presses a side of a blue pencil to a side of a yellow pencil, holding both pencils vertically. One inch of the pressed side of the blue pencil, measuring from its lower end, is smeared with paint. The yellow pencil is held steady while the boy slides the blue pencil down 1 inch, continueing to press it against the yellow one. He returns the blue pencil to its former position, then again it slides down 1 inch. He continues until he has lowered the blue pencil 5 times and raised it 5 times- 10 moves in all.Supposed that during this time the paint neither dries nor diminishes in quantity. How many inches of each pencil will be sneared with paint after the tenth move? -Riddles

Description : A boy presses a side of a blue pencil to a side of a yellow pencil, holding both pencils vertically. One inch of the pressed side of the blue pencil, measuring from its lower end, is smeared ... in quantity. How many inches of each pencil will be sneared with paint after the tenth move? -Riddles

Last Answer : At the start, 1inch of the yellow pencil gets smeared with wet paint. As the blue pencil is moved downward, a second inch of the blue pencils smears a second inch of the yellow pencil. Each pair ... of moves will smear 5 inches. This together with the initial inch, makes 6 inches for each pencil.

Average cost of 10 pens is rupees 200 & average cost of 10 pencils is 100 rupees find the average cost of the all pens and pencils​ -Maths 9th

Description : Average cost of 10 pens is rupees 200 & average cost of 10 pencils is 100 rupees find the average cost of the all pens and pencils​ -Maths 9th

Last Answer : 10 pens of average cost = 200 => 10×200 = 2000 rupees 10 pencils average cost = 100 rupees => 10×100=1000 Pens + Pencils = 20 Total average 2000+1000 = 3000 Rupees 150 is average for average cost of each pen and pencil ✏

Let cost of a pen and a pencil be “x” and “y” respectively. A girl pays ₹16 for 2 pens and 3 pencils. Write the given data in the form of a linear equation in two variables. Also represent it graphically. -Maths 9th

Description : Let cost of a pen and a pencil be “x” and “y” respectively. A girl pays ₹16 for 2 pens and 3 pencils. Write the given data in the form of a linear equation in two variables. Also represent it graphically. -Maths 9th

Last Answer : Solution :-

The total cost of purchasing two pens and three pencils is rs. 42. Express the statement as a linear equation in two variables. -Maths 9th

Description : The total cost of purchasing two pens and three pencils is rs. 42. Express the statement as a linear equation in two variables. -Maths 9th

Last Answer : answer:

Which of the following is used in pencils? A.Graphite B.Silicon C.Charcoal D.Phosphorous -Science

Description : Which of the following is used in pencils? A.Graphite B.Silicon C.Charcoal D.Phosphorous -Science

Last Answer : answer is A. Graphite