1-ft3 of air is contained in a spring-loaded piston-cylinder device. The spring constant is 6lbf/in, and the piston diameter is 12 in. When no force is exerted by the spring on the piston, the state of the air is 250 psia and 450◦F. This device is now cooled until the volume is one-third its original size. Determine the change in the specific internal energy and enthalpy of the air.

Q: 16) The Precambrian has fewer fossils preserved in the fossil record than later eras. Explain why…

A: Precambrian eon have age range 4500-541ma.  Origin of life started from about 4 ba years ago, those…

Q: How do  IPs or the indigneous people view the forest as an ecosystem service?

A: Indigenous People - IPs  These people are being referred to a specific ethnic groups.  These people…

Q: What processes or geologic structures occur along each type of plate boundaries (convergent,…

A:

Q: Where do you expect deep earthquakes? A. below the Ring of Fire B. below the mid-Atlantic ridge C.…

A: The Ring of Fire is the circum-Pacific belt, where the Pacific oceanic plate is subducting below the…

Q: Explain why surface temperature inversions often form overnight.

A: Temperature inversion refers to the rise in temperature with altitude in the troposphere, the lowest…

Q: 5. Under which of the following conditions would you expect the strongest inversion (largest…

A: Ans. The decision of inversion is largely taken by the lapse rate which is defined as the rate of…

Q: 1. a) The spectra of intensity of infrared radiation measured from orbit above the Sahara Desert and…

A: The intensity of radiation depends upon the emission and the absorption of the spectra. Since we are…

Q: There is evidence to suggest that Earth experienced two "Snowball" events in that past. When was the…

A: Answer :  "Snowball" or icy event on the Earth in the past each one lasting for millions of years.…

Q: explain how rocks on the seafloor record magnetic reversals over time?

A: Magnetic reversal means that the change in the direction of Earth's magnetic field over time from…

Q: What would "etc" be?

A: Snowball Earth theory, in geography and climatology, a clarification previously proposed by American…

Q: 17) Pollen grains are sperm-carrying reproductive bodies of seed plants, such as angiosperms…

A: Pollen and Pollen Grains: Pollen: It can be defined as the formed of  coarse that consist of…

Q: Could a meteorite colliding with Earth cause the climate to change?

A: In the event that the asteroid influences an expanse of land, notwithstanding an immense shock wave,…

Q: How many people could be displaced by the end of the century?

A: 700 million people approximately could be displaced by the end of 2050.

Q: List the 8 stages of Real Estate Development

A: Introduction Real estate development means development of a land for living purpose by the…

Q: three regions of the electromagnetic spectrum are present in the troposphere and stratosphere?

A: The three regions of the electromagnetic spectrum are present in the troposphere and stratosphere…

Q: what the 180 deg phase change implied and i don't see it mentioned here in the solution. Does this…

A: Solution

Q: If  the Earth experieced an increase in albedo  from 3% to 8%, how much incoming shortwave radiation…

A: In this question we have been given a condition that when albedo is increased from 3% to 8% then how…

Q: Determine the equivalent Modified Mercalli Scale

A: Significant harm to structures that were built improperly. Some walls might give way.

Q: Discuss how to quantify an earthquake.

A: Sudden release of stored energy in the form of seismic waves, from the blocks of earth crust is…

Q: Based on the map in Figure 13.18 , where in the United States is precipitation most acidic?

A: The precipitation is called more acidic if the pH value is less than 4.5. From the graph given, it…

Q: Write an Essay (3 pages max) about geological history of the Rusternburg Layered Suite of the…

A: The Bushveld Complex was emplaced at 2·06 Ga into sedimentary host rocks of the Transvaal…

Q: What is a super-Earth?   An exoplanet the size of Earth which appears to be habitable.         An…

A: An exoplanet with a radious between 1.4 - 2.8 times Earth radious.  Super Earth is the term is…

Q: 8a) This is a stromatolite fossil. Based on the eon you identified when stromatolites firs appeared,…

A: The details answer is given in the step 2.

Q: What might be the purpose of the facial sutures of trilobites (colored red in the diagram below)?

A: Ans. Introduction The trilobites have facial suture which is there for some purpose since we all…

Q: How does solar output change as sunspot numbers change?

A: Huge magnetic storms called sunspots penetrate the sun's interior far from its surface. The powerful…

Q: Describe two ways in which wind influences air quality.

A: The National Weather Service gives model forecast guidance twice daily for ozone, dust, and fine…

Q: Determine what Modified Mercalli Intensity Scale is describe below: 25. Felt by person at rest. 26.…

A: 25. Scale 2 weak 26. Scale 4 light

Q: do you need to know an air parcel’s temperature or its specific humidity to determine its dew point…

A:

Q: Define a "sustainable" rate of soil loss. Describe how you might determine whether a given farm was…

A: Answer: Using water, wind, ice, or gravity to separate, transport, and deposit soil or rock is known…

Q: What controls the diurnal (daily) timing between air temperature and insolation? What term that…

A: *Equilibrium is typically reached between 3-5 p.m., but this can vary depending on a number of…

Q: How are temperatures in the lower atmosphere likely to change as greenhouse gas levels continue to…

A: Some gases known as greenhouse gases in the Earth’s atmosphere absorbs infrared radiation emitted…

Q: the star betelgeuse has coordinates RA= 05h 55m and dec=+07° 24'. you observe betelgeuse rising on…

A: Hour angle = local sidereal time- right acsension of the star itself Sidereal time is =5:55 Apparent…

Q: Where do planets form?   In the interstellar medium.         In the stellar winds from stars.…

A: In this question we need to explain the place (medium) where planets are formed.

Q: a. ) The figure below uses contours to show f= temperature as it varies with x = west to east and y=…

A: SOLUTION

Q: The function v (x, y) satisfies the Laplace's equation in rectangular coordinates (x, y) and for…

A:

Q: Chordata: Vertebrata: Lampreys: Heterostraci: Osteostraci: Gnathostomata: Placodermi:…

A:

Q: Opening of kaliwa dam along Sierra Madre

A: The Kaliwa Low Dam, proposed by the Philippine Government in 2012, was one of several bulk water…

Q: The "Ring of Fire" is an arc of volcanoes on land. It is created by: Group of answer choices A)…

A: Ring of Fire:  It is referred to as a Cir-Cum Pracific Belt.  Ring of fire is characterized by the…

Q: Why are air masses usually warmer and more humid in summer than in winter

A: Air masses are large volumes of air in the atmosphere having generally the same temperature,…

Q: Echinodermata: Crinoidea: Blastoidea: Asteroidea: Ophiuroidea: Echinoidea: MYA 4600 4000 2500 540…

A: I have attached the solution in the next step

Q: Differentiate Big Bang’s Radiation Era and Matter Era b. What are the early cosmological ideas…

A:

Q: I D B

A: In the given geological cross-section, several beds are present. Here, we can see that there are…

Q: How did these people/societies adapt and adjust the environment to improve their survival and…

A: Answer:  There were various ways by which hunter fisher gatherers adapt and adjust the environment…

Q: The course Geographical Techniques is significant in the field of research in both the social…

A: Ans. Introduction The techniques are useful in research in social sciences which are related to…

Q: A geologic feature is discovered that contains multiple rock layers. Rock layer A has sharp turns.…

A: Answer) A geologic feature is discovered that contains multiple rock layers. Rock layer A has sharp…

Q: If extraterrestrials are out there, why haven't we found them?"

A: We need to explain that if extraterrestrials exists then why we have not found them until now.

Q: 2. A long and narrow gravel aquifer is present below a floodplain, as illustrated in the figure…

A:

Q: Early Mesoamerica: Sustainability of the Early Mesoamericans was this society sustainable? why or…

A: Early Mesoamerican societies were most probably froaging socities that means subsidence lifestyle of…

Q: Which of the following is not an example of green infrastructure? Urban tree canopy Permeable…

A: Streets and parking lots is not an example of green infrastructure.

Q: The record for the largest hailstone in the United States was set on July 23, 2010, in Vivian, South…

A: Diameter= 8 inches= 200mm = 20cm = 0.2m k = 20 seconds V= k2d