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Is PSI equal to PSIA? Since a total vacuum is both 0PSI and 0PSIA. What is the difference between the two units?

Don't Use Chat GPT Will Upvote And Give Handwritten Solution Please

a) b) Assume that the solar receiver has cooled to 600 K at some point during the night. What is the value of its overall emissivity when it is at this new temperature? (Assume the original coating is still on the receiver)   c) At this instance in time during the night (when Gs =0 and the solar receiver has cooled to 600 K), what is the rate of change of the temperature of the receiver with respect to time (dTr/dt ) in K/s if the amount of electricity being produced by the receiver does not change.

What is the angle of incidence of the radio wave signal as it moves from air to glass (relative permittivity of glass is 7.8), if the angle of refraction is 8.2° ?(Use 2 decimal places for the final answer) a) Calculate the EIRP in dBm b) Calculate the power density (µW/m^2) at distance of 10km.

The distance from the sun to Earth is 1.496x10^8 km. How long does it take light to travel from the sun to Earth?

12.Which surfaces in the top view does line K of the front view represent ? ______________ 13.Which surface in the top view does line M in the front view represent ? ______________ 14.Which line in the side view represents the same surface represented by line M of the front view ? ______________________ 15.What kind, or type of line, is line M ? _______________ 16.Which front view line does line X in the side view represent ? ________________

Simple one

77. Asketch of a manufactured part is given below the drawing. Sketch the planes of a datum reference frame in all of the views of the manufactured part. Label each of the datum planes that make up the datum reference frame and note the number of points of contact required with the feature surface. Complete the sketch based on a feature control frame that references datum feature A primary, B secondary, and C tertiary. 스028시 HB Drawing Manufactured part

Please refer to Figure 2. This time, the incident ray is coming in from water (n=1.33) rather than air. And this time, theta = 39.9 degrees, y = 55.2 cm and h = 1.76 cm. What is x now?     61.5 cm     33.1 cm     47.3 cm     23.7 cm

The speed of sound in air is 340 m/s, and the speed of light is 3.0 X 108 m/s. What frequency oflight has the same wavelength as a 200.0 Hz sound wave?

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Directions Part 1: Due Thursday at 9pm. Answer the questions below. Dark energy density parameter ₁ 2.5 2.0 1.5 1.0 0.5 0.0 -0.5 -1.0 Gray area: No Big Bang (density of matter could never have been infinite) 0.0 K Expansion is speeding up Expansion is slowing down This model, for which m=1.00, and A=0.00, has been ruled out by observations. Universe expands forever Universe recollapses M Universe is closed Universe is open 0.5 1.0 1.5 2.0 Matter density parameter m 2.5 a. Which areas (H, I, J, K, L, or M) are the accelerating universes? (As opposed to the expansion staying steady or decelerating.) b. Which area (H, I, J, K, L, or M) represents a flat universe with a matter density parameter of 1.0? c. Which area (H, I, J, K, L, or M) represents a universe containing 76% Dark Energy? d. Which area (H, I, J, K, L, or M) represents the universe that Supernova Type la, galaxy cluster, and CMB data results indicate we are in? e. Which area (H, I, J, K, L, or M) represents the universe that…

The velocity of light in space is approximately186,000 mi/s. The velocity of light in units of kilometersper hour is?

Suppose NASA sent a robotic craft to explore the deep oceans of Jupiter’s moon, Europa (assume the ocean water has an index of refraction 1.34) . In an attempt to be discrete, NASA applies a coating to the submarine-like craft, to make it indetectable to any creatures in the ocean who can see light with a wavelength of 1200nm. The coating material has anindex of refraction of 1.25.a) Draw a clear physics diagram of the problem.b) Technology only allows for coatings to be 1 micrometer or thicker. What is the thinnest coating that can be applied to the craft to make it invisible at 1200nm.

Need help with the attached question, please help with all parts of the question.

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.]

What kind of material would you expect to show an x-ray diffraction profile like the one shown below? 130K 120K 110K 100K- 90K- 80K- 70K- 60K- 50K- 40K- 30K- 20K 10K Intensity (counts) 20⁰ O a. A material containing iron O b. A crystalline solid O c. O d. A single crystal solid A liquid A mixed amorphous and crystalline solid O e. O f. An amorphous solid A grain boundary is an example of a A vacancy is an example of a An interstitial is an example of a A dislocation is a perfect crystal 1-dimensional (line) defect 3-dimensional (volume) defect 0-dimensional (point) defect 2-dimensional (plane) defect Angle (degrees 20