Region 2 of an interstellar cloud has 1.60 times the density of region 1. Assuming the...
Region 2 of an interstellar cloud has 1.60 times the density of region 1. Assuming the pressure of the two regions is equal, what is the ratio of the temperature in region 2 to that of region 1?
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Region 2 of an interstellar cloud has 1.60 times the density of
region 1. Assuming the...
Question 1: Interstellar space is not actually a perfect vacuum. Turns out there are clouds of...
Question 1: Interstellar space is not actually a perfect vacuum. Turns out there are clouds of atoms that roam these regions of space that are loosely held together by their combined gravity. Suppose there is a cloud with a number density of about 100 atoms/cm3 of neutral Hydrogen far away from any stars, bt with in the Milky Way galaxy. The temperature in this cloud is 100 KAsme each hydrogen atom is a hard sphere of radius 0.529 A (angstroms)....
3. 10 points An interstellar dust grain has a diameter of lum, and a density of...
3. 10 points An interstellar dust grain has a diameter of lum, and a density of p = 3g/cmº. Consider a spherical, completely light-absorbing grain at the Earth's orbit, (1 A.U., or 1.5 x 108km), subject to the radiation pressure from the Sun. The Sun's total radiation intensity is I = 1400W/m2 at 1 A.U. a) Calculate the force on the grain due to radiation pressure. (5 pts) b) Calculate the force due to the Sun's gravity. (4 pts) c)...
1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a...
1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas
has a density of 4.2 g/L at the same temperature and pressure, what
is the ratio of the rate of effusion of the known gas to the rate
of effusion of nitrogen?
2. The combustion reaction for octane burning in oxygen is:
2 C8H18 (l) + 25 O2(g)
→ 16 CO2(g) +18 H2O(g)
∆H = -10869 kJ .
Suppose an oxygen bomb calorimeter is loaded with oxygen...
1. A cosmic-ray proton in interstellar space has an energy of 20.0 MeV and executes a...
1. A cosmic-ray proton in interstellar space has an energy of 20.0 MeV and executes a circular orbit having a radius equal 5.80x1010 m. What is the magnetic field in that region of space? 2. The ammeter shown in figure I reads 4.00 A. Determine the values of the currents across the 32 and 7 12 also the voltage of €. 522 712 AO w +25 V Figure 1 10123
2) Silver has a density of 10.5 x 103 kg/m3 and a resistivity of 1.60 x...
2) Silver has a density of 10.5 x 103 kg/m3 and a resistivity of 1.60 x 10-8 m at room temperature. (a) On the basis of the classical free electron gas model, and assuming that each silver atom contributes one electron to the electron gas, calculate the average time between collisions of the electrons. (b) Calculate the mean free path from t and the electron's thermal velocity. (c) How does the mean free path compare to the lattice spacing?
A liquid of density 830 kg/m3 flows through a horizontal pipe that has a cross-sectional area...
A liquid of density 830 kg/m3 flows through a horizontal pipe that has a cross-sectional area of 2.50 x 10-2 m2 in region A and a cross-sectional area of 9.20 x 10-2 m2 in region B. The pressure difference between the two regions is 6.80 x 103 Pa. What are (a) the volume flow rate and (b) the mass flow rate?
A liquid of density 930 kg/m3 flows through a horizontal pipe that has a cross-sectional area...
A liquid of density 930 kg/m3 flows through a horizontal pipe that has a cross-sectional area of 2.90 x 10-2 m2 in region A and a cross-sectional area of 9.90 x 10-2 m2 in region B. The pressure difference between the two regions is 7.40 x 103 Pa. What are (a) the volume flow rate and (b) the mass flow rate?
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...
Questions: 1. What is the area of region A? 2. What is the area of region...
Questions:
1. What is the area of region A?
2. What is the area of region B?
3.What is the area of region C?
4.What is the total area in the three regions?
5. So, what is the speed v1 of the torso as the head begins to
accelerate?
KEY IDEA We can calculate the torso speed at any time by finding the area on the torso alt) graph to that time. Calculations We know that the initial torso speed...
QUESTION 3 0.5 points Save Answer If nitrogen gas has a density of 1.14 g/L, and...
QUESTION 3 0.5 points Save Answer If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a density of 5.67 g/L at the same temp and pressure, what is the ratio of the rate of effusion of the known gas to the rate of effusion of nitrogen? rate effusion unknown - 2 rate effusion N2 QUESTION 4 0.5 points Save Answer The combustion reaction for octane burning in oxygen is: 2 C8H18 (1) + 25 O2(g)...
Question 1: Interstellar space is not actually a perfect vacuum. Turns out there are clouds of atoms that roam these regions of space that are loosely held together by their combined gravity. Suppose there is a cloud with a number density of about 100 atoms/cm3 of neutral Hydrogen far away from any stars, bt with in the Milky Way galaxy. The temperature in this cloud is 100 KAsme each hydrogen atom is a hard sphere of radius 0.529 A (angstroms)....
3. 10 points An interstellar dust grain has a diameter of lum, and a density of p = 3g/cmº. Consider a spherical, completely light-absorbing grain at the Earth's orbit, (1 A.U., or 1.5 x 108km), subject to the radiation pressure from the Sun. The Sun's total radiation intensity is I = 1400W/m2 at 1 A.U. a) Calculate the force on the grain due to radiation pressure. (5 pts) b) Calculate the force due to the Sun's gravity. (4 pts) c)...
1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas
has a density of 4.2 g/L at the same temperature and pressure, what
is the ratio of the rate of effusion of the known gas to the rate
of effusion of nitrogen?
2. The combustion reaction for octane burning in oxygen is:
2 C8H18 (l) + 25 O2(g)
→ 16 CO2(g) +18 H2O(g)
∆H = -10869 kJ .
Suppose an oxygen bomb calorimeter is loaded with oxygen...
1. A cosmic-ray proton in interstellar space has an energy of 20.0 MeV and executes a circular orbit having a radius equal 5.80x1010 m. What is the magnetic field in that region of space? 2. The ammeter shown in figure I reads 4.00 A. Determine the values of the currents across the 32 and 7 12 also the voltage of €. 522 712 AO w +25 V Figure 1 10123
2) Silver has a density of 10.5 x 103 kg/m3 and a resistivity of 1.60 x 10-8 m at room temperature. (a) On the basis of the classical free electron gas model, and assuming that each silver atom contributes one electron to the electron gas, calculate the average time between collisions of the electrons. (b) Calculate the mean free path from t and the electron's thermal velocity. (c) How does the mean free path compare to the lattice spacing?
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...
Questions:
1. What is the area of region A?
2. What is the area of region B?
3.What is the area of region C?
4.What is the total area in the three regions?
5. So, what is the speed v1 of the torso as the head begins to
accelerate?
KEY IDEA We can calculate the torso speed at any time by finding the area on the torso alt) graph to that time. Calculations We know that the initial torso speed...
QUESTION 3 0.5 points Save Answer If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a density of 5.67 g/L at the same temp and pressure, what is the ratio of the rate of effusion of the known gas to the rate of effusion of nitrogen? rate effusion unknown - 2 rate effusion N2 QUESTION 4 0.5 points Save Answer The combustion reaction for octane burning in oxygen is: 2 C8H18 (1) + 25 O2(g)...
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