f. Assuming the Earth as an ideal sphere, determine the percentage volume of the core relative to the total volume of the earth. Note: Radius of the Earth is 6371 km, and radius of the core is 3481km.

Q: A rock sample which originally contained 400 grams of radioactive isotope X now contains 25 grams of…

A: Half-life is given by:Hence disintegration constant (k) is given by:

Q: Your Fairy Godmother (FGM) is a straight-A Astrophysics major at Hogwarts with a mischievous sense…

A:

Q: Calculate the surface wave magnitude MS for an earthquake with IMM of VII, in an area that can be…

A: To calculate the surface magnitude MS for an earthquake withIMM of VII formula is given below,

Q: What percentage of Earth's volume is the metallic core?   Note: The volume of a sphere is  4 3πr3.…

A: Given: The radius of the earth is 6.38×103 km. The radius of the earth's core is 3.51×103 km.

Q: Layers of the Earth : Part-Whole Comparisons Name: Directions: use the data table for the average…

A: Given : Crust = 30 Kilometers Mantle = 2,891 Kilometers Outer Core = 2,259 Kilometers Inner Core =…

Q: The Earth's mid-ocean ridges create about 1.029 cm of new crust over their 1943 km length every…

A: New crust created every year by mid ocean ridges (d) = 1.029 cm Using conversion factor : 1 km =…

Q: You are on an oceanographic research expedition that began in San Juan, Puerto Rico on September 14.…

A: Total distance,

Q: If the Richter scale is altered so that it compares energy released instead of intensity, the…

A: (a) Given: The definition of scale is M2-M1=LOG31E2E1. Introduction: The Richter magnitude scale was…

Q: To illustrate the tremendous pressure that exists deep underground where granite bodies are…

A:

Q: Suppose earthquake A registers two more points on the Richter scale than earthquake B. a. How are…

A: Assume the Richter scale reading of Earthquake B is denoted by MA=X The Richter scale reading of…

Q: 5. Estimate the depth of the earthquake using the seismogram below from the time separation between…

A: Hence the answer...

Q: What can you conclude about the interior of the planet based on seismographs?

A: Answer : Option 'A' is correct answer. Reason is given below:

Q: You are dating rocks by their proportions of parent isotope potassium-40(half life 1.25 billion…

A:

Q: Earth's mass ia 6x10^24 kg and its radius is 6.4x10^6 m. What is the average mass density of Earth?…

A:

Q: On July 13, 1986, the strongest earthquake known to strike San Diego County registered 5.4 on the…

A: The energy released during an earthquake is given by the relation logE=4.4+1.5M M represents the…

Q: What is the approximate radius of the earth? a) 650 km b) 6500km c) 65000km d) 650000km e) none…

A: The radius of the earth is the distance between the center to the surface. It is used in many…

Q: epth is D= 3700 m. (pc=2700 kg/m3, po=3000 kg/m3, pm=3300 kg/m3 pw=1000 kg/m3) What is the thickness…

A: Given as, D= 3700 m and h= 5 km.

Q: K Use the earthquake magnitude scale to answer the following question. Compare the energy of a…

A:

Q: Use the Richter scale r=log 1/i0 to find the intensity of the following earthquakes (let i0=1) a.…

A: Given : Richter scale reads as follows : r = logIIowhere I is the intesity of the earth quake Let us…

Q: If a 5.0 mm thick piece of plastic sheeting is being placed around a ball to represent 50 percent of…

A: We know that 5 mm lan used to represent 5.6 kilometers of the atmosphere's thickness and we can use…

Q: Layers of the Earth : Part-Whole Comparisons Name: Directions: use the data table for the average…

A: Given data: The thickness of outer core is t1=2259 kilometers. The thickness of inner core is…

Q: (d). Determine the number of reflections, N, if the refractive index of the optical fiber is 1.602,…

A: Given: nf=1.602, nm=1.33, θi=30°, D=100×10-6m, L=1m (d) As the light enters the optical fiber, it…

Q: The magnitude M of an earthquake is given. a. Find the earthquake intensity I in terms of the…

A: Given value--- magnitude of earthquake = 7.3 . We have to find--- a. Find the earthquake…

Q: Approximately how much mass (in kg) is in the liquid outer core? Region Percent Mass Temperature…

A:

Q: Select the correct answer. Which statement supports the giant impact theory for the formation of the…

A: The theory which explains the formation of moon in our solar system is called the giant impact…

Q: An earthquake occurs 6,875 km from a seismograph. The P-waves arrive 11.6 minutes later. How fast is…

A:

Q: -5 cm. A -10 µC is located at y = +5 cm. 1. A +30 uC charge is located at y - Determine if there is…

A:

Q: Earth has a mass of 5.98  1024 kg and a diameter of 7930 miles. What is the average density of our…

A: Given data: Mass (m) = 5.98×1024 kg Diameter (d) = 7930 miles Required: The density (ρ) in g/cm3

Q: earthquake intensity measured by I = Io x 10^m, Io is reference intensity and M is magnitude. An…

A: Given I = Io ×10m

Q: Calculate the temperature, hydrostatic pressure, lithostatic pressure, and the effective pressure…

A: Given: Surface temperature Ts=600. Temperature gradient is ∆T=1.450F100 ft. Depth of the layer…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.