Determine the Schwartzschild radius of a black hole equal to the mass of the entire Milky Way galaxy (1.1 X 1011 times the mass of the Sun).

Answers

Answer 1

The Schwarzschild radius of a black hole with a mass equal to the mass of the entire Milky Way galaxy is approximately 3.22 × 10^19 meters.

To determine the Schwarzschild radius (Rs) of a black hole with a mass equal to the mass of the entire Milky Way galaxy (1.1 × 10^11 times the mass of the Sun), we can use the formula:

Rs = (2 * G * M) / c^2,

where:

Rs is the Schwarzschild radius,G is the gravitational constant (6.67 × 10^-11 N m^2/kg^2),M is the mass of the black hole, andc is the speed of light (3.00 × 10^8 m/s).

Let's calculate the Schwarzschild radius using the given mass:

M = 1.1 × 10^11 times the mass of the Sun = 1.1 × 10^11 * (1.99 × 10^30 kg).

Rs = (2 * 6.67 × 10^-11 N m^2/kg^2 * 1.1 × 10^11 * (1.99 × 10^30 kg)) / (3.00 × 10^8 m/s)^2.

Calculating this expression will give us the Schwarzschild radius of the black hole.

Rs ≈ 3.22 × 10^19 meters.

Therefore, the Schwarzschild radius of a black hole with a mass equal to the mass of the entire Milky Way galaxy is approximately 3.22 × 10^19 meters.

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Related Questions

3. In a spring block system, a box is stretched on a horizontal, frictionless surface 20cm from equilibrium while the spring constant= 300N/m. The block is released at 0s. What is the KE (J) of the system when velocity of block is 1/3 of max value. Answer in J and in the hundredth place.Spring mass is small and bock mass unknown.

Answers

The kinetic energy at one-third of the maximum velocity is KE = (1/9)(6 J) = 0.67 J, rounded to the hundredth place.

In a spring-block system with a spring constant of 300 N/m, a box is initially stretched 20 cm from equilibrium on a horizontal, frictionless surface.

The box is released at t = 0 s. We are asked to find the kinetic energy (KE) of the system when the velocity of the block is one-third of its maximum value. The answer will be provided in joules (J) rounded to the hundredth place.

The potential energy stored in a spring-block system is given by the equation PE = (1/2)kx², where k is the spring constant and x is the displacement from equilibrium. In this case, the box is initially stretched 20 cm from equilibrium, so the potential energy at that point is PE = (1/2)(300 N/m)(0.20 m)² = 6 J.

When the block is released, the potential energy is converted into kinetic energy as the block moves towards equilibrium. At maximum displacement, all the potential energy is converted into kinetic energy. Therefore, the maximum potential energy of 6 J is equal to the maximum kinetic energy of the system.

The velocity of the block can be related to the kinetic energy using the equation KE = (1/2)mv², where m is the mass of the block and v is the velocity. Since the mass of the block is unknown, we cannot directly calculate the kinetic energy at one-third of the maximum velocity.

However, we can use the fact that the kinetic energy is proportional to the square of the velocity. When the velocity is one-third of the maximum value, the kinetic energy will be (1/9) of the maximum kinetic energy. Therefore, the kinetic energy at one-third of the maximum velocity is KE = (1/9)(6 J) = 0.67 J, rounded to the hundredth place.

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An RLC series circuit has a 1.00 kΩ resistor, a 130 mH
inductor, and a 25.0 nF capacitor.
(a)
Find the circuit's impedance (in Ω) at 490 Hz.
Ω
(b)
Find the circuit's impedance (in Ω) at 7.50 k

Answers

An RLC series circuit has a 1.00 kΩ resistor, a 130 mH inductor, and a 25.0 nF capacitor.(a)The circuit's impedance at 490 Hz is approximately 1013.53 Ω.(b)The circuit's impedance at 7.50 kHz is approximately 6137.02 Ω.

(a) To find the circuit's impedance at 490 Hz, we can use the formula:

Z = √(R^2 + (XL - XC)^2)

where Z is the impedance, R is the resistance, XL is the inductive reactance, and XC is the capacitive reactance.

Given:

R = 1.00 kΩ = 1000 Ω

L = 130 mH = 0.130 H

C = 25.0 nF = 25.0 × 10^(-9) F

f = 490 Hz

First, we need to calculate the inductive reactance (XL) and capacitive reactance (XC):

XL = 2πfL

= 2π × 490 × 0.130

≈ 402.12 Ω

XC = 1 / (2πfC)

= 1 / (2π × 490 × 25.0 × 10^(-9))

≈ 129.01 Ω

Now we can calculate the impedance:

Z = √(R^2 + (XL - XC)^2)

= √((1000)^2 + (402.12 - 129.01)^2)

≈ √(1000000 + 27325.92)

≈ √1027325.92

≈ 1013.53 Ω

Therefore, the circuit's impedance at 490 Hz is approximately 1013.53 Ω.

(b) To find the circuit's impedance at 7.50 kHz, we can use the same formula as before:

Z = √(R^2 + (XL - XC)^2)

Given:

f = 7.50 kHz = 7500 Hz

First, we need to calculate the inductive reactance (XL) and capacitive reactance (XC) at this frequency:

XL = 2πfL

= 2π × 7500 × 0.130

≈ 6069.08 Ω

XC = 1 / (2πfC)

= 1 / (2π × 7500 × 25.0 × 10^(-9))

≈ 212.13 Ω

Now we can calculate the impedance:

Z = √(R^2 + (XL - XC)^2)

= √((1000)^2 + (6069.08 - 212.13)^2)

≈ √(1000000 + 36622867.96)

≈ √37622867.96

≈ 6137.02 Ω

Therefore, the circuit's impedance at 7.50 kHz is approximately 6137.02 Ω.

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In the case of a time-varying force (ie. not constant), the
A© is the area under the force vs. time curve.
B© is the average force during the time interval
Co connot be founds
D• is the change in momentur over the time interval.

Answers

In the case of a time-varying force (ie. not constant), is the change in momentum over the time interval. The correct option is D.

The assertion that "A is the area under the force vs. time curve" is false. The impulse, not the work, is represented by the area under the force vs. time curve.

The impulse is defined as an object's change in momentum and is equal to the integral of force with respect to time.

The statement "B is the average force during the time interval" is false. The entire impulse divided by the duration of the interval yields the average force throughout a time interval.

The assertion "C cannot be found" is false. Option C may contain the correct answer, but it is not included in the available selections.

Thus, the correct option is D.

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A diatomic ideal gas occupies 4.0 L and pressure of 100kPa. It is compressed adiabatically to 1/4th its original volume, then cooled at constant volume back to its original temperature. Finally, it is allowed to isothermally expand back to
its original volume.
A. Draw a PV diagram B. Find the Heat, Work, and Change in Energy for each process (Fill in Table). Do not assume anything about the net values to fill in the
values for a process.
C. What is net heat and work done?

Answers

A)Draw a PV diagram

PV diagram is drawn by considering its constituent processes i.e. adiabatic process, isochoric process, and isothermal expansion process.

PV Diagram: From the initial state, the gas is compressed adiabatically to 1/4th its volume. This is a curve process and occurs without heat exchange. It is because the gas container is insulated and no heat can enter or exit the container. The second process is cooling at a constant volume. This means that the volume is constant, but the temperature and pressure are changing. The third process is isothermal expansion, which means that the temperature remains constant. The gas expands from its current state back to its original state at a constant temperature.

B) Find the Heat, Work, and Change in Energy for each process

Heat for Adiabatic Compression, Cooling at constant volume, Isothermal Expansion will be 0, -9600J, 9600J respectively. work will be -7200J, 0J, 7200J respectively. Change in Energy will be -7200J, -9600J, 2400J.

The Heat, Work and Change in Energy are shown in the table below:

Process Heat Work Change in Energy

Adiabatic Compression 0 -7200 J -7200 J

Cooling at constant volume -9600 J 0 -9600 J

Isothermal Expansion 9600 J 7200 J 2400 J

Net Work Done = Work Done in Adiabatic Compression + Work Done in Isothermal Expansion= 7200 J + (-7200 J) = 0

Net Heat = Heat Absorbed during Cooling at Constant Volume + Heat Released during Isothermal Expansion= -9600 J + 9600 J = 0

C) What is net heat and work done?

The net heat and work done are both zero.

Net Work Done = Work Done in Adiabatic Compression + Work Done in Isothermal Expansion = 0

Net Heat = Heat Absorbed during Cooling at Constant Volume + Heat Released during Isothermal Expansion = 0

Therefore, the net heat and work done are both zero.

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