The famous Orion Nebula is which of the following? a) a planetary nebula b) a reflecton...
The famous Orion Nebula is which of the following?
a) a planetary nebula
b) a reflecton nebula
c) a dark nebula
d) an emission nebula
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The famous Orion Nebula is which of the following? a) a planetary nebula b) a reflecton...
Consider a planetary nebula with distance 1.5 kpc and angular size 12 arcsec: a. What is...
Consider a planetary nebula with distance 1.5 kpc and angular size 12 arcsec: a. What is its linear radius? b. Suppose this hot *T = 30,000 K) star emits ionizing photons at a rate of 6.92*10^47 s^(-1). Assuming a recombination coefficient α = equals 3*10^(-13) cm^3/s, estimate the density of electrons in the nebula. c. Assuming this is a spherical nebula, calculate the emission measure.
Kutner 10.8: Suppose a planetary nebula expands at a speed v, determined from Doppler shift observations....
Kutner 10.8: Suppose a planetary nebula expands at a speed v, determined from Doppler shift observations. The angular size θ is observed to be increasing at the rate d01d. In terms of these quantities, find an expression for the distance d to the planetary nebula. 1.
3. a) What is the kinetic energy in a 0.1Mstv planetary nebula, expanding at 10'km? b)...
3. a) What is the kinetic energy in a 0.1Mstv planetary nebula, expanding at 10'km? b) Compare that with the gravitational potential energy of the shell when it was at R 100 Rstv, assuming that there is a 1.0M of material left behind.
The Crab Nebula is the home of the famous pulsar described in Destination 12. Below is...
The Crab Nebula is the home of the famous pulsar described in Destination 12. Below is a table of the radius of the nebula (really, half its major axis since the nebula is not circular in appearance in the sky) and the date on which that radius was measured. This table starts in 1054 when the nebula was born during a bright supernova explosion observed that year. One of the first telescopic observations of the Crab was around 1755 by...
Fundamental Planetary Science problem 2.2 a) Calculate the minimum velocity at which a rock must leave...
Fundamental Planetary Science problem 2.2 a) Calculate the minimum velocity at which a rock must leave Mars' at- mosphere for it to be on a trajectory that intercepts tje Earth's orbit? You can take into account the speed needed to escape from the Martian gravity but not the drag within the planet's atmosphere. You may also neglect planetary rotation and assume the planets' orbits are circular and coplanar. b) At what speed does this rock impact on the upper atmosphere...
Looking for assistance on the problem. I have come to a few answers but would like...
Looking for assistance on the problem. I have come to a few answers
but would like a second opinion. Thanks!
In interstellar space there are clouds of cold gas (at about 20 K) called dark nebula because they block the light from stars behind them from reaching Earth. A typical diameter fro a dark nebula is about 20 light years and has a density of monatomic hydrogen of 50 hydrogen atoms per cubic centimeter. a.) Estimate the mean free path...
16) Which is true about planetary orbits: The orbital and escape velocity of a body are...
16) Which is true about planetary orbits: The orbital and escape velocity of a body are always equal The escape velocity is the minimum velocity required to make an object orbit in a circular motion The escape velocity is dependent on the trajectory of the object The escape velocity is independent on the trajectory of the object An object that reaches the escape velocity has negative mechanical energy a) b) c) d) e)
QUESTION 3 3. In Pavlov's famous experiment in which he conditioned a dog to salivate to...
QUESTION 3 3. In Pavlov's famous experiment in which he conditioned a dog to salivate to the sound of a metronome, the conditioned stimulus was the: a. food. b. laboratory setting. c. metronome. d. salivation.
Physical Anthropology (E1: Corrections) Which species most likely made the famous Laetoli footprints in Tanzania? a)...
Physical Anthropology (E1: Corrections) Which species most likely made the famous Laetoli footprints in Tanzania? a) Homo habilis b) Kenyanthropus platyops c) Australopithecus afarensis d) Paranthropus aethiopicus Which species had the largest post-canine teeth of any Hominin? Paranthropus boisei Homo heidelbergensis Australopithecus anamensis Three of the following four behaviors are inarguably symbolic in nature. Which one is not? a) elaborate mortuary rituals b) language c) art d) simple burial
3. The crab nebula is the remnant of a supernova first recorded in 1054 AD b Chinese astronomers....
Please
answer question 3
3. The crab nebula is the remnant of a supernova first recorded in 1054 AD b Chinese astronomers. It is approximately 2.05 x 1019 meters away. How long does it take for the light to reach us? In what year did the supernova actually occur? Note: the speed of light is 3x10 m/s (6 marks) 4. A guitar has strings lengths of 1 m. One of the strings is plucked. Draw the fundamental, second and third...
Kutner 10.8: Suppose a planetary nebula expands at a speed v, determined from Doppler shift observations. The angular size θ is observed to be increasing at the rate d01d. In terms of these quantities, find an expression for the distance d to the planetary nebula. 1.
3. a) What is the kinetic energy in a 0.1Mstv planetary nebula, expanding at 10'km? b) Compare that with the gravitational potential energy of the shell when it was at R 100 Rstv, assuming that there is a 1.0M of material left behind.
Fundamental Planetary Science problem 2.2 a) Calculate the minimum velocity at which a rock must leave Mars' at- mosphere for it to be on a trajectory that intercepts tje Earth's orbit? You can take into account the speed needed to escape from the Martian gravity but not the drag within the planet's atmosphere. You may also neglect planetary rotation and assume the planets' orbits are circular and coplanar. b) At what speed does this rock impact on the upper atmosphere...
Looking for assistance on the problem. I have come to a few answers
but would like a second opinion. Thanks!
In interstellar space there are clouds of cold gas (at about 20 K) called dark nebula because they block the light from stars behind them from reaching Earth. A typical diameter fro a dark nebula is about 20 light years and has a density of monatomic hydrogen of 50 hydrogen atoms per cubic centimeter. a.) Estimate the mean free path...
16) Which is true about planetary orbits: The orbital and escape velocity of a body are always equal The escape velocity is the minimum velocity required to make an object orbit in a circular motion The escape velocity is dependent on the trajectory of the object The escape velocity is independent on the trajectory of the object An object that reaches the escape velocity has negative mechanical energy a) b) c) d) e)
Please
answer question 3
3. The crab nebula is the remnant of a supernova first recorded in 1054 AD b Chinese astronomers. It is approximately 2.05 x 1019 meters away. How long does it take for the light to reach us? In what year did the supernova actually occur? Note: the speed of light is 3x10 m/s (6 marks) 4. A guitar has strings lengths of 1 m. One of the strings is plucked. Draw the fundamental, second and third...
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