In the fall of 2002, scientists at Los Alamos National Laboratory determined that the critical mass of neptunium-237 is about 60 kg. The critical mass of a fissionable material is the minimum amount that must be brought together to start a nuclear chain reaction. Neptunium-237 has a density of 19.5 g/cm3. What would be the radius of a sphere of this material that has a critical mass?

Q: Calculate the density of a metal cylinder whose mass is 75.0 g if its geometric volume is 25.00 cm3.…

A: Given: The mass of the metal is 75 g. The volume of the metal is 25 cm3.

Q: A 1938 nickel has a diameter of 21.21 mm, a thickness of 1.95 mm, and weighs 0.04905 N. What is its…

A: We know, density=MassVolume

Q: If the radius of a CD-ROM is 6 cm, what is the average area taken up by each bit if the total number…

A: The radius of a CD ROM is, The total area of a CD ROM can be given as, The total number of nits…

Q: A balloon, in the shape of a right circular cylinder, is being inflated in such a way that the…

A: The increase in radius increases the area of the caps and the area of the side wall. The increase in…

Q: One cubic centimeter (10 cm3) of water has a mass of 1.0 x 10-3 kg. (a) Determine the mass of 1.0 m3…

A: Given that:For Volume V=1 cm3 or 10-6 m3, mass of water  m=1.0×10-3 kgBiological substances are 98%…

Q: The diameter of the spherical particle is (1.900x10^O) fm, and the mass is (2.51x10^-27) kg.…

A: Formula of density is as follow; ρ=mV…

Q: fine grains of beach sand are assumed to be spheres of radius a. 45.7 μm. These grains are made of…

A: Given data: The diameter of each grain is, The density of the silicon dioxide grain is, Formula…

Q: The diameter of a cylindrical pipe is found to be 4.8 cm with an error of ± 0.5 mm. What is the…

A: Diameter of cylinder(D) =4.8cm Error in diameter (dD) = ±0·5mm

Q: The area of a small rectangle is 418 mm-. Express this area in the S.I. unit. O a. 0.000418 square…

A:

Q: The density of a 12kg cube of Gold is 19,300 kg /m3. What would be the density of a 8 kg cube of…

A: Required : Density of 12 kg of Gold.

Q: What quantity defines the difference between the internal diameter and the external diameter of a…

A: Answer: The thickness of the mug defines the difference between the internal diameter and the…

Q: A closed rectangular container with a square base is to have a volume of 2000 in. The material for…

A: Given: Volume of the container, V = 2000 in3 Cost of material for top and bottom, Ctb = $4 /in2 Cost…

Q: 1.55 * An Earthlike Planet. In January 2006 astronomers reported the discovery of a planet…

A: Given : m = 5.5 mE = 5.5(5.97 x 1024) = 3.28 x 1025 kg ρ = 1.76 g/cm3 = 1760 kg/m3

Q: USING LENGTH MEASUREMENTS MADE WITH A CENTIMETER RULER U.S. MINT MEASURED USING…

A: The dimensions of Dime, Penny and Quarter are given as follows  : Dime : mass = 2.268 grams diameter…

Q: 2. The density of pure solid copper is 8.93 grams per milliliter. What volume does 7 kilograms of…

A:

Q: The density of a rectangular block of copper metal that weighs 1896 g is 17 g/ cm3 .The dimensions…

A: Given density of the copper block is ρ= 17 g/cm3 weight of the copper block is W = 1896 g so the…

Q: An irregular metallic solid has a mass of 35 g. If its length is 10 cm, its width 8 cm, and its…

A: Density is defined as ratio of mass by volume.  d=mV Here, d is density, m is mass and V is volume.…

Q: The Earth has a mass of 5.98*1024kg and an average radius of 6.37*10 m. What is the density of the…

A:

Q: A storage bin has the shape of a cylinder with a conical top. What is the volume of the storage bin…

A: Given Data: The radius of a bin is, r=5.4 ft The height of a cylindrical portion is, h=9.8 ft The…

Q: Treat a cell in a human as a sphere with a radius of 1.0

A: Given, the radius of a cell assuming it to be spherical, r=1 micrometre  We need to estimate the…

Q: 9. Grains of California beach sand are approximately spheres with a radius of, on average, 50 µm.…

A: 9. Let the given grain’s radius be denoted by R and let the given cube’s side length be denoted by…

Q: A large chunk of metal has a mass of 544.3 kg, and its volume is measured to be 0.0480 m3. a. Find…

A: Given data: Mass of metal (m) = 544.3 kg Volume of metal (v) =0.0480 m3 Need to calculate the…

Q: The density of a rectangular block of copper metal that weighs 1896 g is 17 g/ cm3 .The dimensions…

A:

Q: What mass of a material with density r is required to make a hollow spherical shell having inner…

A:

Q: Find the order of magnitude of the following physical quantities. (a) The mass of Earth's…

A: For order of magnitude put decimal after first digit andthen notice the factor of (10)   mass of…

Q: The density of gold is 19.32 g/cm^3. What is this value in kilograms per cubic meter? Required to…

A: Density of gold= 19.32 g/cm3 Volume= 1 m3

Q: The radius of sphere 2 is triple the radius of sphere 1. What is the ratio of the areas, A2/A1?

A: Let us use subscript 1 for smaller sphere and subscript 2 for largersphere .Then , according to…

Q: One cubic centimeter (1.0 cm3) of water has a mass of 1.0 ✕ 10−3 kg. (a) Determine the mass of 1 m3…

A: V=1cm3 = 1*10-6m3, m=1*10-3kg ρ=m/v = 1*10-3 / 1*10-6 = 1*103 Kg/m3 -i) (a) Now v=1m3 Mass(m)= ρ*v…

Q: A pyramid has a height of 488 ft and its base covers an area of 10.0 acres. The volume of a pyramid…

A: A) Volume of pyramid: V = 13(area of base ×height)V = 13(10 acrea)(43560 ft21 acre)(488 ft)V = 70.85…

Q: The thickness of the numbered pages of a textbook is measured to be 3.75 cm. If the last page of the…

A: thickness  of 860 pages = 3.75 cm   let thickness of one page be t    total thickness = = thickness…

Q: density of a rod of length 4 m is given by p(x) = 8 + 2x measured in kilograms per meter, where x is…

A: Linear density = mass/ total length = m/L

Q: Copper can be drawn into thin wires. How many meters of 34- gauge wire (diameter=6.30x10-3 in) can…

A:

Q: 1. The following students measure the density of a piece of lead three times. The density of lead is…

A: density of lead (d) = 11.34 g/cm3

Q: You have been given a small rock sample to identify based on its density. Suppose that you use the…

A:

Q: A silver sphere with a radius of 5.8 cm weighs the same as a certain aluminum cube. How long are the…

A: radius of silver sphere (r) = 5.8 cm density of silver (d1) =10.49 gcm3density of aluminum  (d2)=…

Q: 3. A right circular cylinder having a radius of 2.0 cm and a height 5.0 cm is cut from a copper cube…

A:

Q: Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and…

A:

Q: alculate the mass of a solid gold rectangular bar that has dimensions lwh = 5.65 cm ✕ 10.5 cm ✕ 27.5…

A: mass = volume x density  volume = 5.65 cm ✕ 10.5 cm ✕ 27.5 cm. =1631.4375 x 10-6 m3 Density  = 19.3…

Q: One cm3 of gold is 19.32 g. What is the density (ratio of mass to volume) of gold in kg per m3 ?  I…

A: Given that, One cm3 of gold is 19.32 g. The density (ratio of mass to volume) of gold in kgm3 is…

Q: What is the mass of a solid gold rectangular bar that has dimensions l x w x h = 5.60 cm ✕ 12.0 cm ✕…

A:

Q: A relationship such as 1 in.=2.54 cm is a(n) derived unit. equivalence statement. base unit.…

A: Solution:  Given: 1 in = 2.54 cm  The above given relationship is in terms of derived unit. What is…

Q: (a) Compute the mass of the earth from knowledge of the earth-moon distance (3.84 * 10^8 m) and of…

A: Given,distance between earth-moon centre, R = 3.84 ×108 mlunar period, T = 27.3 daysaverage radius…

Q: A rectangular box with mass 16.5 g is said to have dimensions of 2.8 cm x 1.7 cm * 0.4 cm .…

A: Given data:  A rectangular box  Mass (m) = 16.5 g Length (l) = 2.8 cm Width (W) = 1.7 cm Depth (d) =…

Q: An expression for buoyant force is FB = ρgV, where FB has dimensions [MLT−2], ρ (density) has…

A: Given: The buoyancy force is given as. FB = ρgV The FB has dimensions [MLT−2], ρ (density) has…

Q: A typical oil molecule has an effective diameter of 0.25 nm. If 25 L (1 L is the same as 1000 cm3)…

A:

Q: The ________ of substance is the number of times it is denser than water a) mass b) specific gravity…

A: According to the guidelines, only one question will be answered. Please submit the other parts…

Q: Grains of fine California beach sand are approximately spheres with an average radius of 50 m and…

A:

Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.