The standard kilogram (Fig. 1.la) is a platinum-iridium cylinder 39.0 mm in height and 39.0 mm in diameter. What is the density of the material?
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- Look up the measurement of the approximate thickness of a human hair. Convert the measurement to an SI unit (if it isn’t already).Measure the outside diameter of a flagpole or a street-light pole by first wrapping a piece of string around the object to determine its circumference. Why do you think the flagpole or the streetlight pole is designed to be thicker at the bottom near the ground than at the top? Explain your answer.PLEASE SHOW SOLUION STEP BY STEP WITH UNITS. PLEASE ANSWER IT IN 30 MINS. TOPIC: THERMODYNAMICS - PROCESSES OF GASES
- Using a lens with unknown magnification, the ocular reticle measures 0.7 mm in length. What is the length of an individual ocular unit for this lens, in μm? Show your calculation.Nickel (Ni) has the Face-Centered Cubic (FCC) crystal structure. The edge length is a = 0.3536 nm. What is the linear density in atoms/nm along direction [100]? Select one: O a. 3.00 b. 2.282 c. 5.66 O d. 7.48 O e. 4.00Gold has the Face-Centered Cubic (FCC) crystal structure. The edge length is a = 0.408 nm. What is the linear density in atoms/nm along direction [110]? Select one: a. 3.125 b. 5.66 c. 7.48 d. 4.00 e. 3.47
- Express the density, in SI units (kg/m3), of a specimenof material that has a specific weight of 0.284lb/ in.3.Find the total mass of the triangular region shown below. All lengths are in centimeters, and the density of the region is 8(1) = 3+z grams/cm?. %3D mass = (include units) ************When the Sun becomes a red giant, it's luminosity will be 2000 times its current value. The solar flux at Earth will also increase by a factor of 2000. Neglecting the greenhouse effect, the surface temperature of the earth is determined by thermal equilibrium: the flux of radiation absorbed equals the flux of radiation emitted. This means the Earth's surface flux must also increase by a factor of 2000. If the current average surface temperature is 58 degrees F. what will the average surface temperature be when the Sun is a red giant. [Hint: use the Stefan-Boltzman's law in the form of a ratio, and remember that the temperature there is in Kelvins.]
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