Let's say that the number density of galaxies in the universe is, on average, 3 × 10–68 galaxies/m3. If astronomers could observe all galaxies out to a distance of 1010 light-years, how many galaxies would they find? (Note that there are 1016 meters in 1 light-year.)

Let's say that the number density of galaxies in the universe is, on average, 3 × 10–68 galaxies/m3. If astronomers could observe all galaxies out to a distance of 1010 light-years, how many galaxies would they find? (Note that there are 1016 meters in 1 light-year.)

Related questions

Q: Residential building codes typically require the use of 12-gauge copper wire (diameter 0.205 cm) for...

A: (a) Rate of energy production in copper wire

Q: Refer to the picture:

Q: b) Suppose the Sun's main energy source was due to gravitational collapse and assume that the Sun ha...

A: Basic Details The gravitational potential energy is the energy possessed due to position that is equ...

Q: Is the following statement true or false? For a nonzero force applied on a rod, its torque can be ze...

Q: A model rocket is constructed with a motor that can provide a total impulse of 21.0 N.s. The mass of...

Q: please answer asap! thanks

Q: Problem 1: This problem concerns a collection of N identical harmonic oscillators (perhaps an Einste...

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for...

Q: An isotropic point source emits light at wavelength 500 nm with the power of 200 W. a)Suppose that t...

Q: If the nuclear fusion reaction of converting 4 H → He occurs at an efficiency of 0.7%, and that mass...

Q: A stone is thrown upward at an angle of 53° above the horizontal. Its maximum height above the relea...

Q: In this question you have setup standing waves on mismatched string and compare the amplitudes of wa...

A: The point (P) in the diagram below is at a phase 3π/4 away from the origin O’.

Q: Consider the Schrodinger equation for a one-dimensional linear harmonic oscillator: -(hbar2/2m) * d2...

Q: A dance hall is built without pillars and with a horizontal ceiling 7.5 m above the floor. A mirror ...

Q: 2-part physics question

Q: Problem 26 The voltage along an aron is as shown at some instant of time. The aron radius is 10 um; ...

A: a) The required longitudinal current in the axon as a function of position for the left side,

Q: Part C When you hold a spherical concave mirror with a 48.2-cm radius of curvature 19.4 cm in front ...

A: The radius of curvature of the mirror is 48.2cm and the object distance is 19.4cm. the focal lenth o...

Q: A 75-kg block of ice at -13°C is placed in an oven set to a temperature of 105°C. The ice eventually...

Q: An electron at point A in the figure (Figure 1) has a speed v0 of 1.60×106 m/s . a) Find the magnit...

A: From the Lorentz force law, the force on an electron is calculated as, Since, the electron follows ...

Q: When an atom emits a photon in a transition from a state of energy E1 to a state of energy E2, the p...

A: Again, from conservation of momentum, The expression for the recoil energy of the atom is,

Q: Two light bulbs are 1.20 m apart. From what distance can these light bulbs be marginally resolved by...

Q: For this problem, I know the answer is C but I do not know how to get there. Seeing the steps and eq...

Q: The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red...

Q: A glass optical fiber having an index of reflection nglass = 1.45 is submerged in a liquid with inde...

Q: Compute the vector potential A for z > 0 in the Coulomb gauge corresponding to the current J = K8(z)...

A: The coulomb gauge condition is given as, According to this, the divergence of vector field is 0. Th...

Q: On the planet Arrakis, a male ornithoid sings at a frequency of 1180 Hz. When flying toward her mate...

Q: A converging lens with a focal length of 40 cm and a diverging lens with a focal length of -56 cm ar...

Q: when spinning a ice skater abducts her arms to slow her spinning. From a mechanics point of view, wh...

A: When the ice skater abducting her arms the distance between her axis of rotation and some of her mas...

Q: The mass of the Earth is 5.98 × 10^24 kg. A 9.29 kg bowling ball initially at rest is dropped from a...

Q: When a 24.0-W resistor is connected across a 12.0-V battery, a current of 460 mA flows. What is the ...

Q: Problem 1: In the figure below, Q1 and Q2 are both a negative point charges, both of comparable magn...

Q: Problem 2: A loop of radius a on the xy plane carries a nonuniform charge density pi(ø) = po cos ø, ...

Q: A voltmeter connected across the terminals of a tungsten-filament light bulb measures 117 V when an ...

Q: A hoop and a cylinder of equal mass and radius roll down an inclined plane. Which one accelerates fa...

Q: A typical person begins to lose consciousness if subjected to accelerations greater than about 5g (4...

Q: A high voltage transmission line of diameter 2 cm and length 180 km carries a steady current of 1000...

A: Basic Details The current flowing in a conductors depends on free charge density, the charge of the ...

Q: Consider the following electric fields: a) E(z,t)= î sin(@t + kz)+ ŷ cos(@t + kz) b) E(z,t)= Re[(1+ ...

A: The direction of wave propagation is towards the negative z axis. Let Ex0 and Ey0 represent the in...

Q: Suppose that the steel gas tank in your car is completely filled when the temperature is 11.6 °C. Ho...

A: Basic Details The volume of the gas in the tank increases with the increase in the temperature as th...

Q: For this problem, I know the answer is E but I do not know how to get there. Seeing the steps and eq...

Q: Problem 6: If a double-slit is illuminated at normal incidence by coherent (laser) light it produces...

Q: I already know the answer to this practice problem, and it is shown is the image. I do not know how ...

A: Basic Details The angle form the center line at which the blue light appears depends on the diffrac...

Q: please help asap!

Q: A radar for tracking aircraft broadcasts a 12 GHz microwave beam from a 2.0-m-diameter circular rada...

A: (a) Write the expression for wavelength of the electromagnetic wave. The radar antenna is acts as a...

Q: physics question

Q: a) Calculate the distance between the final image and 22-cmcm-focal-length lens. b) Calculate the im...

Q: Determine the x-coordinate of the centroid of the shaded area by integration.

Q: please ONLY redo #6

A: Let the mass of the protons be denoted by m each. From the Newton’s universal law of gravitation, th...

Q: I want to measure the kinetic energy of a ball travelling down a feild. If the mass of the ball is ...

Q: As a result of his observations, Ole Roemer concluded that eclipses of Io by Jupiter were delayed by...

Q: Finally estimate the lifetime of an M0 spectral type star if the total mass of the star is M = 0.51M...

Q: QUESTION 4 A wire (mass = 50 g, length = 40 cm) is suspended horizontally by two vertical wires whic...

A: 4. The expression for the tension is,

Question

Let's say that the number density of galaxies in the universe is, on average, 3 × 10^–68 galaxies/m³. If astronomers could observe all galaxies out to a distance of 10¹⁰ light-years, how many galaxies would they find? (Note that there are 10¹⁶ meters in 1 light-year.)

Expert Solution