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(a) the Sun, (b) (a) What is the gravitational potential energy of an interstellar cloud, with...
An constant density interstellar cloud with a radius of 2215 AU consists of an ideal gas of pure ...
An constant density interstellar cloud with a radius of 2215 AU consists of an ideal gas of pure 12C I. The object’s kinetic energy is 12.3% of the absolute value of its potential energy. What is the radius of the cloud when it reaches equilibrium (assume zero energy loss)
8. 5pt Suppose you gathered a ball of interstellar gas that was equal to the size...
8. 5pt Suppose you gathered a ball of interstellar gas that was equal to the size of the Earth (a radius of about 6400 km). If this gas has a density of 3.8 hydrogen atoms per cm3, typical of the interstellar medium, what would its total mass be? The volume of a sphere is (For comparison, a bowling ball has a mass of about 5 kg) 9. [5pt] At the average density of of a star-forming molecular cloud, about 880...
Stars form from the gravitational collapse of clouds of interstellar ("between the stars") gas. To simplify...
Stars form from the gravitational collapse of clouds of interstellar ("between the stars") gas. To simplify the situation, assume that a single star forms from a uniform, spherical cloud of gas of mass 2.0 x 1030 kg and radius 1.0 x 1013 m. 2. Before it begins to collapse, the cloud is rotating with a period of 1.4 million years. What is the angular speed of the cloud? (2.26 × 10-14 rev/s) The cloud eventually collapses to form a star...
Only A and B please :) The equation mgy for gravitational potential energy is valid only...
Only A and B please :)
The equation mgy for gravitational potential energy is valid only for objects near the surface of a planet. Consider two very large objects of mass m_1 and m_2, such as stars or planets, whose centers are separated by the large distance r. These two large objects exert gravitational forces on each other. The gravitational potential energy is U = -Gm_1 m_2/r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant. (a) Sketch...
Which is an example of changing gravitational potential energy into kinetic(motion)energy? A.eating food and releasing the...
Which is an example of changing gravitational potential energy into kinetic(motion)energy? A.eating food and releasing the energy B.riding a bicycle C.falling off a ladder D.a gas cloud in space contracting due to gravity and heating up E.C and D
Estimate the lifetime of sun whether your source was: a) Potential gravitational b)Energy of nuclear fusion...
Estimate the lifetime of sun whether your source was: a) Potential gravitational b)Energy of nuclear fusion of hidrogen and helium on PP cicle c)Calculate the minimal mass of a star with lifetime equal to universe's age, or 13.7 billions of years
19.5 Electric Potential Energy: Potential Difference The temperature near the center of the Sun is thought...
19.5 Electric Potential Energy: Potential Difference The temperature near the center of the Sun is thought to be 15 million degrees Celsius (1.5x107°c). Through what voltage must a singly charged ion be accelerated to have the same energy as the average kinetic energy of ions at this temperature? Submit Answer Tries o/10
A satellite of mass m is in a circular orbit of radius R2 around a spherical planet of radius R1 made of a material with density ρ. ( R2 is measured from the center of the planet, not its surface.) Use G for the universal gravitational constant.
A satellite of mass m is in a circular orbit of radius R2 around a spherical planet of radius R1 made of a material with density ρ. ( R2 is measured from the center of the planet, not its surface.) Use G for the universal gravitational constant.A) Find the kinetic energy of this satellite, KExpress the satellite's kinetic energy in terms of G, m, π, R1, R2, and ρ.B) Find U, the gravitational potential energy of the satellite. Take the gravitational potential...
The figure is a graph of the gravitational potential energy and kinetic energy of a 70...
The figure is a graph of the gravitational potential energy and
kinetic energy of a 70 g yo-yo as it moves up and down on its
string. The acceleration of gravity is 9.81 m/s2 .
a) By what amount does the mechanical energy of the yo-yo change
after 6.0 s? Answer in units of J.
b) What is the speed of the yo-yo after 4.5 s? Answer in units of
m/s.
c) What is the maximum height of the yo-yo?...
The temperature of the surface of the Sun is 5500°C.
The temperature of the surface of the Sun is 5500°C.Part (a) What is the average kinetic energy, in joules, of hydrogen atoms on the surface of the Sun?Part (b) What is the average kinetic energy, in Joules, of helium atoms in a region of the solar corona where the temperature is 6.00 x 105 K?
8. 5pt Suppose you gathered a ball of interstellar gas that was equal to the size of the Earth (a radius of about 6400 km). If this gas has a density of 3.8 hydrogen atoms per cm3, typical of the interstellar medium, what would its total mass be? The volume of a sphere is (For comparison, a bowling ball has a mass of about 5 kg) 9. [5pt] At the average density of of a star-forming molecular cloud, about 880...
Stars form from the gravitational collapse of clouds of interstellar ("between the stars") gas. To simplify the situation, assume that a single star forms from a uniform, spherical cloud of gas of mass 2.0 x 1030 kg and radius 1.0 x 1013 m. 2. Before it begins to collapse, the cloud is rotating with a period of 1.4 million years. What is the angular speed of the cloud? (2.26 × 10-14 rev/s) The cloud eventually collapses to form a star...
Only A and B please :)
The equation mgy for gravitational potential energy is valid only for objects near the surface of a planet. Consider two very large objects of mass m_1 and m_2, such as stars or planets, whose centers are separated by the large distance r. These two large objects exert gravitational forces on each other. The gravitational potential energy is U = -Gm_1 m_2/r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant. (a) Sketch...
19.5 Electric Potential Energy: Potential Difference The temperature near the center of the Sun is thought to be 15 million degrees Celsius (1.5x107°c). Through what voltage must a singly charged ion be accelerated to have the same energy as the average kinetic energy of ions at this temperature? Submit Answer Tries o/10
The figure is a graph of the gravitational potential energy and
kinetic energy of a 70 g yo-yo as it moves up and down on its
string. The acceleration of gravity is 9.81 m/s2 .
a) By what amount does the mechanical energy of the yo-yo change
after 6.0 s? Answer in units of J.
b) What is the speed of the yo-yo after 4.5 s? Answer in units of
m/s.
c) What is the maximum height of the yo-yo?...
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