A lead pencil consists of a cylinder ofwood with a solid cylinder of graphite filled into it.The diameter of the pencil is 7 mm, the diameter of the graphite is 1 mm and the length of the pencil is 10 cm. Calculate the weight of the whole pencil,If the speci fic gravity of the wood is 0.7 gm/cm and that of the graphite is 2.1 gm/em?.

Q: A solid cylinder has a radius of 4 cm and a height of 10 cm. The cylinder is made from wood and has…

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Q: If 27 J of work are needed to stretch a spring from 13 cm to 19 cm and 45 J are needed to stretch it…

A: Given: Work done to stretch spring from 13cm to 19cm = 27J Work doen to stretch spring from 19cm to…

Q: A paint manufacturer desires a cylindrical steel drum to hold 50gal. of roof paint. For convenience…

A: A paint manufacturer desires a cylindrical steel drum to hold 50gal. of roof paint. For convenience…

Q: If the work required to stretch a spring 3 ft beyond its natural length is 6 ft-lb, how much work…

A: In this question, we find the work done by stretching the string 18 in beyond its natural length. By…

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Q: Cocoa butter, which is solid at room temperature and melts at 34°C, has a specific gravity of 0.86.…

A: Given, Cocoa butter, which is solid at room temperature and melts at 34°C has a specific gravity of…

Q: A force of 2 N will stretch a rubber band 2 cm (0.02 m). Assuming that Hooke’s Law applies, how far…

A: Given:

Q: 4. A force of 1200 lb compresses a spring from its natural length of 18 in. to a length of 16 in.…

A: We have to find work done to compress the spring from its natural length (L=18).

Q: A wood log is approximately cylindrical with the dimensions of diameter of 1.5 feet and a height of…

A: Given that, A wood log is approximately cylindrical with the dimensions of a diameter of 1.5 feet…

Q: If the work required to stretch a spring 1 ft beyond its natural length is 12 ft-lb, how much work…

A: Given work required to stretch by 1ft is 12ft -lb

Q: (b) What average pressure (in Pa) from her weight is exerted on the horizontal surface if her two…

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Q: A tank contains 60 kg of salt and 1000 L of wa solution is mixed and drains from the tank at

A: Given: A tank contains 60 kg of salt and 1000 kg of water.

Q: For a tube having E 2 x 105 N/mm2 and u = 0.3 the hoop stress at the inner surface is twice the…

A: We have to find the thickness.

Q: 3. A lead pipe 3 cm thick has inner diameter of 4 cm. Find  number of cubic centimeters of lead in a…

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Q: a Escherichia coli cells are about 2.85 µm long and 0.705 µm in diameter. i) How many E. coli cells…

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Q: A toy shop is manufacturing hollow plastic spheres. The outside diameter of the sphere is 6 inches…

A:

Q: If the WORK required to stretch a spring 1 ft beyond its natural length is in ft-lb is needed to…

A: Introduction: The formula of work done from point a to b is given by, W=∫abkxdx Where is constant.

Q: 3 Approximate the volume of a golf ball using differentials if the diameter of its rubber-like core…

A: Given that the diameter of a golf ball's rubber-like core is 32 inches and  its ionomer resin cover…

Q: A 60-m-long, 9.4-mm-diameter rope hangs freely from a ledge. The density of the rope is 55 g>m.…

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Q: F. Determine the specific gravity of the substance having a volume of 9.85 ft x 13.12 ft x 59 ft if…

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Q: A balloon 30.7 m in radius is to be filled with helium. How many m3 of helium are needed to fill it?

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Q: If two equal charges, each of 1 C, were separated in air by a distance of I km, what would between…

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Q: A vertical right circular cylindrical tank measures 28 ft high and 16 ft in diameter. It is full of…

A: work =force × displacement  in integral formW=∫Fdx

Q: A rectangular tank has length 4 m, width 12 m and height 3.5 m i) If the tank is filled with water…

A:

Q: A toy shop is manufacturing hollow plastic spheres. The outside diameter of the sphere is 6 inches…

A: We can find the weight as below

Q: A solid rectangular box has a length of 6 cm, width of 4 cm and a height of 5 cm. What is the…

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Q: A conical tank with a height twice its diameter can hold water up to 1000 gal. A 2”-radius hole was…

A: Given: A conical tank with a height twice its diameter can hold water up to 1000 gal. A 2”-radius…

Q: If the mass of an unknown substance is 5.3 g and the volume is 2 cm. what would the density be?

A:

Q: A company manufactures cylindrical paint cans with open tops with a volume of 35,000 cubic…

A: Given: Volume=35,000 cubic centimeters.To find: radius  cm? height  cm?

Q: If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work…

A: Given that the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb.

Q: If the work required to stretch a spring 3 ft beyond its natural length is 12 ft-lb, how much work…

A: Solution: the objective is to find the work needed to stretch it 9 in beyond its natural length

Q: Determine the mass of a hemispherical copper container whose external and internal radii are 12 cm…

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Q: 2. Find an expression for the amount of work required to lift a thin 10 ft by 10 ft slab whose…

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Q: A copper wire 4 mm in diameter is evenly wound about a cylinder whose length is 24 cm and diameter…

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Q: 4. A vertical right circular cylindrical tank measures 24 ft high and is 8 ft in diameter. It is…

A: Given:The height of the right circular cylindrical tank is 24 ft and diameter is 8 ft. It is full of…

Q: A toy shop is manufacturing hollow plastic spheres. The outside diameter of the sphere is 6 inches…

A:

Q: A uniform cable hanging over the edge of tall building is 20 ft long and weighs 60 lb. How much work…

A:

Q: Consider a 20-foot chain that weighs 3 pounds per foot hanging from a winch 20 feet above ground…

A: Find the work done by the winch in winding up one-third of the chain

Q: ZSM-5, a catalyst material, has a surface area of 425 m³/g. What is the surface area of this…

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Q: IF 6 J of work is needed to stretch a spring from 10 cm to 12 cm and another 10 J is needed to…

A: According to the guideline we should be able to do only first question at a time because both…

Q: a. About how accurately must the interior diameter of a 10-m-high cylindrical storage tank be…

A: a.Calculate the radius of the tank can be given as,

Q: A cylinder has a base radius of 6ft and a height of 18ft. What is its volume in cubic ft, to the…

A: Given thatBase radius  r = 6 ft.height            h = 18 ft.volume of the cylinder is given byV =…

Q: There is an order to infuse normal saline at 25 drops per minute and a tubing set that says there…

A: Given, Flow rate = 25 drops/min Drop Factor = 15 drops/ml Volume = 1 liter              = 1000 ml

Q: 4. A block of lead has dimensions of 4.5 cm by 5.2 cm by 6.0 cm. The block has Calculate the density…

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Q: 2. A 20-foot chain with density 4 lb/ft hangs off the roof of a building. How much work is required…

A: Given a 20 foot chain with density 4 lb/ft hangs off the roof of a building.

Q: A hollow iron pipe is 1 cm long and its external diameter 2 * 8 cm. If the thickness of the pipe is…

A: R = external radius = 8 cm r = internal radius = 7 cm now, volume of iron = pi(R2-r2)*h      =…

Q: If the work required to stretch a spring 3 ft beyond its natural length is 12 ft-lb, how much work…

A:

Q: Two containers designed to hold water are side by side, both in the shape of a cylinder. Container A…

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Q: 9. Find the work done by lifting a 20 ft rope that weighs 3 lbs per foot to the top of a cliff if…

A: