# absorber thickness

783 results

**Chemistry**

The density of aluminum is . A square piece of aluminum foil, 20.02 on a side is found to weigh 2.573 .What is the thickness of the foil, in millimeters?

**Chemistry**

a sheet of metal is 97.4 mm wide and 59.4 mm long. if it weighs 9.788g and the density of the metal is 7.23g/cm^3, what is the thickness of the sheet(in mm) ?

**science**

a piece of styrofoam has a density of 30kg/m3 and a mass of 3.6kg. if the piece of styrofoam has a lenght of 1.2m and a width of 1.0 what is its thickness

**Math**

Brad is building shelves for his mom. Each shelf will be 1/2 inch think with a 1/8 inch veneer glued on top. What is the total thickness of the shelf 5/8?

**Engineering**

Can someone please help me with this problem? In order to reduce the material cost, an engineer decides to use a hybrid beam instead of an all-carbon fiber beam. Both beams have the same overall dimensions with rectangular cross-sections. The hybrid beam contains carbon fibers...

**calculus**

Find the dimensions of the largest open-top storage bin with a square base and vertical sides that can be made from 108ft^2 of sheet steel. (Neglect the thickness of the steel and assume that there is no waste)

**Physics**

A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign.

**Physics**

A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign.

**Physics**

A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign.

**physics**

A narrow beam of light passes through a plate of glass with thickness 1.4 cm and a refractive index 1.55. The beam enters from air at an angle 23.5 . The goal is to calculate the deviation d of the ray as indicated in the figure.

**Pre-Calc**

A slice 1 unit thickness is removed from one see of a cube. Use the rational zeroes theorem and synthetic division to find the original dimensions of the cube, if the remaining volume is 48 cm^3 v= x^3 v=x*x*x x=(x-1)*x*x 48=(x-1)*x*x

**Maths**

How many silver coins, 2cm in diameter and of thickness 2 mm, must be melted to form a showpiece in the form of a frustum of a cone having height 9 cm and radii of the outer circular ends as 5cm and 3cm?

**science**

from sea level, the biosphere goes up about 9 km and down about 19 km. what is the thickness of the biosphere in meters?

**Chemistry**

A package of aluminum foil covers 75.0 ft^2 and weighs 12 oz. Aluminum has a density of 2.70 g/mL. What is the thickness of the foil in millimeters? (1 in = 2.54 cm, 1 oz = 28.4 g, 1 mL = 1 cm^3)

**Chemistry**

A square of aluminum foil measuring 3.20 inches on each side weighs 275 mg. The density of aluminum is 2.70 g/cm3. Find the thickness (in micrometers) of the foil.

**math**

Find the weight of led pipe is 3.5 m long if the external diameter of pipe is 2.4 cm and the thickness of led is 2mm and 1cm cube of the leg width is 4g

**victoria Ci**

We find an electric field of magnitude E = 1.2 x 107 V/m across a particular nerve membrane. The potential difference between the interior and exterior surface of the membrane is 65 mV. The thickness of the membrane is closest to

**Physics**

A puddle of water (n = 1.33) is covered with a very thin layer of light oil (n = 1.20). What is the minimum thickness the oil in the region that does not reflect light with a wavelength of 550 nm?

**Physics**

suppose that the angle of incidence is 1 = 37.1°, the thickness of the pane is 4.17 mm, and the refractive index of the pane is n2 = 1.50. Find the amount (in mm) by which the emergent ray is displaced relative to the incident ray.

**physics**

A wire of uniform thickness with a resistance of 27 ohm is cut into three equal pieces and are joint in parallel.find the resistance of the parallel combination.

**physics**

a thin square homogeneous plate, AB=BC=CD=DA=2 m density 78 kn/m2 and thickness 10mm is suspended. A and B is fixed. if support a breaks suddenly calculate (1)instaneneous accelration of D,(2) instataneous angular acceleration op plate and (3) instateneous reaction at B.

**Statistics**

A study has shown that the thickness of sheet steel follows an approximately uniform distribution from 20 to 50mm. What is the probability that a sheet of steel chosen at random will be between 20 and 30mm?

**physics 1**

Antarctica is roughly semicircular, with a radius of 2000km. The average thickness of its ice cover is 3000m. How many cubic cm of ice does Antarctica contain? (Ignore the curvature of Earth).

**tools**

What is the major difference between a high-speed and a high-torque drill? A. Chuck type B. Line cord gage C. Output speed D. Brush thickness

**math**

the external dimensions of a closed box are 8cm by 5cm by 4cm. given that the thickness of the wood of which it is made is 0.5cm, find the volume of the wood used to make it.

**calculus**

An oil can is to have a volume 1000in^3 and is to be shaped like a sylinder with a flat bottom but capped by a hemisphere. Neglect the thickness of the material of the can and find the dimensions that will minimize the total amount of material needed to construct it.

**Chemistry**

An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What other wavelengths would ...

**Maths**

How many silver coins ,2cm in diameter and of thickness 2mm,must be melted to form a showpiece in the form of frustum of a cone having height 9cm and radii of outer circular ends as5cm 3cm

**PHYSICS**

As you eat ur way through a bag of cookies, you observe each cookie is a circular disk of diamter 8.50+ or - 0.02 cm and thickness 0.050+ or - 0.005cm. Find the avg volume of a cookie and the uncertainty in the volume.

**Math**

A cylindrical tube is open at both ends.the internal diameter tube 10.4cm and its length is 25cm. If the thickness of the tube 8mm everywhere,find the total surface of area of the tube.

**Physics**

A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. A current I = 0.1 A is sent through the wire. What is the magnetic field on the axis of the solenoid?

**physics**

Suppose a bimetallic strip is constructed of copper and steel strips of thickness 1.33 mm and length 23.5 mm, and the temperature of the strip is reduced by 4.50 K. If the strip is 23.5 mm long, how far is the maximum deviation of the strip from the straight orientation?

**physics**

A glass window pane has an area of 3.50 m2 and a thickness of 0.600 cm. If the temperature difference between its surfaces is 27.0°C, what is the rate of energy transfer by conduction through the window? I tried using the formula P=ka[(th-Tc)/l] my answer was thirteen but ...

**Statistics**

Native American pot shards discovered i a hpoi villiageare approximately normally distributed with a mean of 5.1 millimeters and a standard deviationof 0.9mm what is the probability that the thickness is (a)less than 3.0mm (b) more than 7.0 and (c) between 3.omm and 7.0mm

**Statistics**

Native American pot shards discovered in a hopi villiage are approximately normally distributed with a mean of 5.1 millimeters and a standard deviationof 0.9mm what is the probability that the thickness is (a)less than 3.0mm (b) more than 7.0 and (c) between 3.omm and 7.0mm

**Physics**

The temperature difference in and outside an electric oven is 150oC glass fitted on the door has thickness and area of 0.2cm and 300cm2 respectively. if thermal conductivity of glass is 0.84Js-1m-1K-1 then how much heat will be lost in one minute?

**physics**

At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^-3m, and the area is 0.016 m^2. The temperature at the outside surface of the cup is 35 degree C. The latent heat of fusion for ice is 3.35*10^5 J/kg. What mass of ice ...

**Engineering/ Algebra**

A balsa wood glider wing has the following properties during flight: Thickness = 0.3175 cm I = 0.0733 cm^4 Moment = 4.2 N-cm Find the bending stress in the wing. Express your answer in N/m^2. Is the answer 9.09 N/m^2 or 18.19 N/m^2

**physics**

In the figure below, suppose that the angle of incidence is θ1 = 29.7°, the thickness of the glass pane is 5.46 mm, and the refractive index of the glass is n2 = 1.52. Find the amount (in mm) by which the emergent ray is displaced relative to the incident ray.

**PHYSICS**

Bricks have a thickness of 12 cm, if an external wall of the house measures 10 mx 15m, calculate the rate of heat exchange through this wall if the inside temperature is 200C and the outside temperature is 50C.

**math**

find the weight of lead pipe 3.5 m long the ext . diameter of the pipe is 2.4 cm and thickness of the pipe is 2 mm given 1 cm of lead weighs 10g

**Math**

A rectangle sheet of aluminum foilis 50 centimeters long and 20 centimeters wide, and weighs 5.4 grams. 6ind the thickness of the aluminum foil in centimeters.

**Physics**

A ray of light is incident on a material with reflective indeed n=1.46. if the material has thickness w=2.6mm; how many times does the light take to pass through the material?

**math**

Jeremy collected nickels for one week. he is making stacks of his nickels to determine how many he has. the thickness of one nickel is 1/16 inch. how tall is a stack of 16 nickels

**Physics**

A 50 g bullet travelling with an initial velocity of 400 m/s penetrates into a wall with an average force of 4*10^4 N.It goes out of the wall with a velocity of 50 m/s. What is the thickness of the wall

**maths**

The inner dimensions of wooden box are 2m, 1.2m, 0.75m. the thickness of wood is 2.5cm.find the cost of wood if the cost of wood of 1cubic metre is rs.5400

**Physics**

5. The surface of a glass plate (index of refraction n3 = 1.50) is coated with a transparent thin film (index of refraction n2 = 1.25). A beam of monochromatic light of wavelength 6.0 X 10^-7 meter traveling in air (index of refraction n1 = 1.00) is incident normally on ...

**Maths**

A Swiss Roll cake is 21cm long. When I cut it onto slices if I reduce the thickness of each slice by 1/4cm. Taking x as the number of thicker slices, write down an equation in x and solve. I just don't undertsand how to form the question.

**Physics**

Suppose the height of the ramp is h1= 0.3 m, and the foot of the ramp is horizontal, and is h2= 1.00 m above the floor. What will be the horizontal distance traveled by the following four objects before they hit the floor? Assume that R= 12.7 mm in each case; assume that the ...

**Biology**

Skin color is the result of: A. the quality of melanin in the skin B. the number of macrophages C. the amount of fat in the epidermis D. stratum basale and the thickness of those cell. Cant really find any of those answers. Thanks for helping!

**PHYSICS**

Imagine a soap film (air-soapy water-air) of 1 l,m thickness, and refractive index of 1.5 with white light normal to the film. Which wavelengths in the optical range (400 nm to 700 nm) will appear brightest?

**chemistry**

For corrosion resistance, a steel bolt is plated with nickel from a solution of nickel(II)sulfate. If 0.250 g of nickel produces a plating of the required thickness and a current of 0.540 A is used, predict how long in minutes the process will take

**Calculus**

The strength of a beam with rectangular corss-section is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical log of diameter d= 3 ft

**Calculus**

The strength of a beam with rectangular corss-section is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical log of diameter d= 3 ft

**Geometry**

If the top of the paint container is made of plastic, how much plastic is used to make the top? Assume the thickness of the plastic is negligable. Round to the nearest square inch.

**physics**

in an oil drop experiment the radius of the oil patch was found to be 10cm and the volume of the oil used was 1.1*10^-5 cm^3. calculate; 1) the diameter of the film 2) the thickness of the patch 3) the size of the molecule

**Calculus**

A cylindrical metal can is made to hold 500ml of soup. Determine the dimensions of the can that will minimize the amount of metal required(assume that the top and sides of the can are made from metal of the same thickness

**Calculus**

Ice is forming in a pond at a rate given by dy/dx=ksqrt(t), where y is the thickness of the ice in cm at time t measured in hours since the ice started forming, and k is a positive constant. Find y as a function of t.

**Chemistry**

An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What other wavelengths would ...

**math**

A cylindrical ring of thickness 3.5mm.Each ring has internal diameter 14 mm and external diameter 16 mm.Taking pie=3.14 calculate the volume of maetla in single link chain,writing your answer correc to 3 significant figs.

**Math word problem**

A carpenter wants to put four shelves on an 8-foot wall so that the five spaces created decrease by 6 inches as we move up the wall. If the thickness of each shelf is 3/4 inch, how far will the bottom shelf be from the floor?

**Mechanics of Materials**

the propane gas tank has an inner diameter of 1500mm and wall thickness of 15mm. If the wall is pressurized to 2MPa, determine the absolute maximum shear stress in the wall of tank.

**civil engineering**

the propane gas tank has an inner diameter of 1500mm and wall thickness of 15mm. If the wall is pressurized to 2MPa, determine the absolute maximum shear stress in the wall of tank.

**Heat Transfer**

A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24 W/m¨¬C?

**Heat Transfer**

A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24 W/m¨¬C?

**Mathematics**

A cylindrical tube, open at both ends, is made of metal. The internal diameter of the tube is 10.4cm and its height is 25 cm. If thickness of the metal is 8mm everywhere, calculatd the volume of metal in the cylinder

**Engineering/Algebra**

A balsa wood glider wing has the following properties during flight: Thickness= 0.3175 cm I= 0.0733 cm^4 Moment= 4.2 N-cm Find the bending stress in the wing. Express your answer in N/m^2. Is the answer either 9.096 N/m^2 or 18.192 N/m^2

**Physics**

A bullet travelling at a velocity of 10metres per second hits a plank of thickness 10g. calculate the velocity of the bullet if it has to pass through 10 such planks. Please let me know the concept which I have to take to solve this problem.

**social studies**

Despite temperatures of more than 5,000º F, Earth's inner core is solid because of _____________________. a layer of ice just above it. the fact that Earth rotates so quickly. a thickness of over 1,000 miles. great pressure from the layers around it.

**physics**

Find the thickness of a aluminum matal in between glass. if a light of 550nm is shined onto glass which makes 31 black lines . with black lines on the edges.

**Maths IX**

The mass of a solid sphere of metal 5cm in diameter is 6.25 kg. Find the mass of a spherical shell of same metal, the external diameter being 10cm and thickness 1 cm.

**MATH**

In metric units what is the thickness of a dime, the width of a little finger, and the length of one big step? http://www.google.com/search?as_q=&hl=en&num=10&btnG=Google+Search&as_epq=thickness+of+a+dime&as_oq=&as_eq=&lr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&...

**science (chem)**

In general when instructions are to let a solution cool to room temp would it be incorrect to put the bottle containing the solution into a cold water bath so it could cool faster? Would it affect the solution in an adverse way? or does it depend on what you are cooling? ...

**physics**

A woman finds the front windshield of her car covered with ice at -12.6°C. The ice has a thickness of 4.80 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How much heat is required to melt the ice?

**Chemistry**

A sheet of aluminum foil has a total area of 1.000 ft squared and a mass of 3.636 grams. What is the thickness of the foil in millimeters? (Density of Aluminum is 2.699 grams/cm cubed.)

**Chemistry**

Please help: A silicon wafer has a thickness of 0.084cm, a diameter of 10.16 cm, and a mass of 15.87 g. what is the density of silicon based on these measurement? I know that D=mass/volume. Is this equation right: 15.87g/(0.084cm*10.16cm)? thank you for your help.

**Math**

The frame for a shipping crate is to be constructed from 24feet of 2x2 lumber. If the crate is to have square ends of side x feet, express the outer volume v of the crate as a function of x (disregard the thickness of he lumber). Well, I know that v=lwh, but I don't know what ...

**Chemistry**

A sheet of aluminum (Al) foil has a total area of 2.119 ft2 and a mass of 2.714 g. What is the thickness of the foil in millimeters? (Density of Al = 2.699 g/cm3? I got 5.108*10^-4 cm but that is wrong. (2.714g)/(2.699g/cm^3)/(2.119ft^2) * 1ft/30.48cm = 5.108*10^-4 cm

**Physics**

The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane. The thickness of the membrane is 0.000000008 m. What is the magnitude of the ...

**physics**

A thin layer of liquid methylene iodide (n=1.756) is sandwiched between two flat parallel plates of glass (n=1.50). What must be the thickness of the liquid layer if normally incident light with in air is to be strongly reflected?((2m+1),85.4nm)

**physics**

A Styrofoam box has a surface area of 0.75 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 24°C. If it takes 7.6 h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.

**physics**

A Styrofoam box has a surface area of 0.78 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 24°C. If it takes 7.6 h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.

**math**

the frame for a shipping crate is to be constructed from 24 feet of 2 by 2 lumber. if the crate is to have square ends of side x feet, express the outer volume V as a function of x (disregard the thickness of the lumber)

**7th grade Math/Science**

Can you help me with this science question: from sea level, the biosphere goes up about 9km and down about 19km. What is the thickness of the biosphere in meters? (there wasn't a formula in the workbook). Thanks

**Math**

1. Using a metric micrometer caliper to measure the thickness of a plate, we found that graduation line 4 is visible on the sleeve, one additional 0.5 mm is visible in the sleeve, line 4 on the thimble coincides with the reading line on the sleeve. What is the measured ...

**calculus**

an open topped cylingrical pot is to have a volume of 125 cm^3. determine the minimal possible amount of material used in making this pot.( neglect the thickness of the material as well as possible waste)

**physics**

a cell membrane is 70 angstrom (A)unit thick if angstrom unit is o.1nm what is the membrane thickness in a. meter b. micrometers

**physic**

if a tape is wound around a cylinder at a rate of 1 rad/s for a half hour, if each rotation deposits one layer of tape and if the final difference between inner ad outer radii of the winding in one cm, what is the thickness of the tape?

**Physics HELP**

A student has six textbooks, each with a thickness of 4.0 cm and a weight of 30 N. What is the minimum work the student would have to do to place all the books in a single vertical stack, starting with all the books on the surface of the table?

**physics**

A student has six textbooks, each with a thickness of 3.6 cm and a weight of 38 N. What is the minimum work the student would have to do to place all the books in a single vertical stack, starting with all the books on the surface of the table?

**physics**

A student has six textbooks, each with a thickness of 3.6 cm and a weight of 38 N. What is the minimum work the student would have to do to place all the books in a single vertical stack, starting with all the books on the surface of the table?

**Physics**

A capacitor consisting of two parallel plates of area A = 4.6 m2 and spacing d = 0.150 m is filled with two parallel slabs of dielectric material of equal thickness and with dielectric constants 1 = 2.20 and 2 = 5.50, respectively. What is the total capacitance?

**Physics**

A student has six textbooks, each with a thickness of 4.8 cm and a weight of 26 N. What is the minimum work the student would have to do to place all the books in a single vertical stack, starting with all the books on the surface of the table?

**physics**

a rotating disc of mass 'm', radius 'r', thickness 'D' can rotate in vacuum with constant angular velocity 'w' . now the disc is placed in water of density 'p', find the time in which its angular velocity becomes half.

**Math**

Jeremy collected nickels for 1 week. He is making stacks of his nickels to determine how many he has. The thickness of 1 nickel is 1/16 inches. -How tall is a stack of 16 nickels? -What is the combined height of 3 nickels, 2 nickels, and 1 nickel?

**math**

Jeremy collected nickels for one week. He is making stacks of his nickels to determine how many he has. The thickness of one nickel is 1/4 in. How tall is a stack of 4 nickels? 3 nickels, 2 nickels?

**sound**

In a stringed musical instrument, the sound frequency of a particular string can be increased by A. lengthening the string. B. tightening the string. C. increasing the string's thickness. D. loosening the string.

**Physics**

Which kind of pot would be better to use on a halogen cooktop? A. A shiny stainless steel pot B. A black cast iron pot C. It's equally OK to use either as long as you adjust the thickness so that the heat conduction is the same.

**Science - The Sun**

What is the true thickness of each of the sun's layers (core, radiation zone, convection zone, photosphere, chromosphere, and corona)? What is the age, composition, average density, period of rotation, distance from Earth, and source of energy from the sun?

**math**

Jeremy collected nickels for 1 week. He is making stacks of his nickels to determine how many he has. The thickness of 1 nickel is 1/16 inches. -How tall is a stack of 16 nickels? -What is the combined height of 3 nickels, 2 nickels, and 1 nickel? I NEED HELP!!!!!!!:D @(+___+)@