The temperature of the CMB today is T=2.725 K. Calculate the temperature of the CMB at redshift z=2000. Choose the option below that most closely matches your answer. Select one: O a. 9759 K O b. 3412 K Ос. 5453 K. O d. 5450K O e. 2000K

The temperature of the CMB today is T=2.725 K. Calculate the temperature of the CMB at redshift z=2000. Choose the option below that most closely matches your answer. Select one: O a. 9759 K O b. 3412 K Ос. 5453 K. O d. 5450K O e. 2000K

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter34: Frontiers Of Physics

Section: Chapter Questions

Problem 8PE: (a) Calculate The approximate age of the universe from the average value of the Hubble constant, To...

See similar textbooks

Related questions

Q: A space probe of mass 86 kg is moving with an initial speed of 10 m/s in the outer space. A constant…

A: Given that, Mass(m)= 86 kg Initial speed (v)= 10 m/s Fnet = <42,28,19>N So, Fnet= 42i + 28j +…

Q: An iron anchor of density 7880.00 kg/m³ appears 198 N lighter in wate than in air. (a) What is the…

A: The anchor is completely submerged in water of density ρw. Density=7880kg/m³ Force=198N

Q: Two blocks of masses m, and m, approach each other on a horizontal table with the same constant…

Q: What are the main differences between the incoming radiation from the sun and the outgoing radiation…

A: Electromagnetic radiation Electromagnetic radiation can be defined as a form of energy that is…

Q: (a) What is the momentum in kg · m/s of a garbage truck that is 1.20 x 104 kg and is moving at 30.0…

Q: The meter tape is used to measure projectile's time of flight. Select one: O True O False

Q: After a fall, a 110 kg rock climber finds himself dangling from the end of a rope that had been 15 m…

Q: A potter's wheel of radius 14cm starts from rest and rotates with a constant angular acceleration…

A: Given data: Radius (r) = 14 cm = 0.14 m Initial angular velocity (ωi) = 0 rad/s Time (t) = 25 s…

Q: 2. From her bedroom window, a girl drops a water-filled balloon to the ground, 6.0m below. If the…

Q: A man whirls a 0.30-kg plece of lead attached to the end of a string of length 0.460 m in a circular…

Q: can jump straight up to a height of 0.440 m, what is its initial speed as it leaves the ground? (b)…

A: Givenh=0.440 m

Q: Find the momentum A car that has a mass of 1500 kg and a velocity of 17-0 m/s ?

A: Given data: Mass (m) = 1500 kg Velocity (v) = 17.0 m/s Required: Momentum (P)

Q: A solid copper cube has an edge length of 89.6 cm. How much stress must be applied to the cube to…

Q: Find the momentum A car that has a mass of 1500 kg and a velocity of 17-0 m/s ?

A: Mass of the car is (m)= 1500 kg Velocity of the car (v)= 17 m/s

Q: Suppose that, for the graph shown below, each division on the time scale represents 2.00 10-3 s and…

Q: A cylindrical tank with a large diameter is filled with water to a depth D = 0.350 m. A hole of…

Q: Another long, straight current-carrying wire has a circular loop with a 13.44-mm radius. If the…

Q: A magnifying glass is formed from a single double-convex (converging) lens with a focal length of f…

Q: The amount of work done due to carrying a q=+4μCq=+4μC charge from point AA to point BB is equal to…

A: Given The charge is given as q=+4 μC=+4×10-6 C Work done is W=100 μJ=100×10-6 J We have to find…

Q: catapult is placed 100 feet from the castle wall, which is 35 feet high. The soldier wants the…

A: GivenA catapult is placed 100 feet from the castle wall, Height of wall, H=35 ftInitial velocity of…

Q: What is the angle between vectors A and B if A = 2i + 2j - k and B = 5i -3j + 2k? a. 84° b. 57° c.…

Q: A tank of water has been outdoors in cold weather, and a slab of ice 4.8 cm thick has formed on its…

Q: ) A force of 12.0N is applied to a 32.5g wooden block resting against pring causing it to compress…

A: Given Mass m = 32.5 g = 32.5 × 10-3 kg Compression x = 13 cm = 0.13 m

Q: A 5300-pF capacitor is charged to 85 V and then quickly connected to an inductor with 75-mH…

Q: A cylindrical tank has a tight-fitting piston that allows the volume of the tank to be changed. The…

A: Given : V1 = 0.110 m3 P1 = 0.355 atm V2 = 0.390 m3

Q: The power output of a speaker is 9.0 Watts and emits in all directions. At what distance will the…

Q: After a fall, a 110 kg rock climber finds himself dangling from the end of a rope that had been 15 m…

Q: Consider a 55kg box being pushed with a 200N horizontal force acros The box accelerates at 2m/sec.…

A: Givenm=55 kgF=200 Nd=10 ma=2 m/s2

Q: Considering the figure attached, which instance has the highest centripetal acceleration?

A: We know that centripetal acceleration = v2r, where v is velocity and r is radius. For A =…

Q: Two charged particles: Q1= -25.75 uC and Q2= +15.55 uC are separated by a distance r = 27.0 cm. What…

A: Given data: Two charged particles Q1 = -25.75 μC Q2 = +15.55 μC Distance (r) = 27.0 cm = 0.270 m…

Q: wo point charges of +2.0 µC and – 1.0 µC are 10 cm apart. The electrical force between them is?…

Q: A wire has a current of 40 A flowing south. Another wire parallel to the first has a current of 25 A…

Q: A golf lesson last from 10 a.m. to 11:15 a.m. and includes a 15-minute break with equal lengths of…

A: Golf lesson time = 10:00 a.m to 11:15 a.m Break time =15 minute

Q: Problem Solving... A torsion test shows that the shear modulus of an aluminum specimen is 4.60 x…

Q: (a) Calculate the angular momentum of Earth that arises from its spinning motion on its axis,…

A: We have to apply angular momentum concept here

Q: A 12,000 lb truck with a speed of 50 mph is heading due east has a head-on collision with a 4000 lb…

Q: :A positive point charge is moving to the left. What would be the direction of the magnetic field…

Q: Calculate the resistance of a carbon rod when at 60°C if its resistance at 0°C is 0.0180.

A: Resistance at temperature T is given by:- R = R0 [1+α (Tf -Ti)] Here, R = Resistance at final…

Q: Refer to the given circuit. C1 = 5 µF %3D C3 = 8 µF C2 = 4 µF C, = 6 µF C5 = 4 µF DURACELL VT = 12 V…

Q: a maximum torque of 9.0 Nm. The loop has 50 Find the current through a loop needed to create Q4)…

A: Given, Torque=9Nm Area=50m² Magnetic field=0.800T

Q: Suppose that, for the graph shown below, each division on the time scale represents 2.00 10-3 s and…

Q: when a current-carrying wire loop is a magnetic field, it tends to turn so as to bring the plane of…

Q: Just post the picture where you did that work, Please! Can you please draw a body diagram and show…

Q: The motion of a body is described by the equation 3.45 sin (0.120?t) where t is in s and y is in m.…

Q: I need help with this 2 part question.

Q: Express the masses of proton and neutron to five significant figures. Express the mass of electron…

Q: Iwo stars in a binary system orbit around their center of mass. The centers of the two stars are…

Q: 2. Milk is poured into a glass of height 140 mm and inside diameter 66 mm. If the initial velocity…

Q: ight of an 80 kg objec

A: We know that the weight of an object is given as W = mg ----------------eq1 where m is the mass g…

Q: A Christmas light hangs on a series of strings as shown in the figure 1. The tension on string a ,…

Question

The temperature of the CMB today is
T=2.725 K. Calculate the temperature of
the CMB at redshift z=2000. Choose the
option below that most closely matches
your answer.
Select one:
O a. 9759 K
O b. 3412 K
Ос.
5453 K.
O d. 5450K
Ое. 2000 К

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

The average lifetime of a pi meson in its own frame of reference (i.e., the proper lifetime) is 2.6 x10-8 s. If the meson moves with a speed of 0.93c, what is its mean lifetime (s) as measured by an observer on Earth? What is the average distance (m) it travels before decaying, as measured by an observer on Earth? What distance (m) would it travel if time dilation did not occur?
The average particle energy needed to observe unification of forces is estimated to be 1019 GeV . (a) What is the rest mass in kilograms of a particle that has a rest massof 1019 GeV/c2 ? (b) How many times the mass of a hydrogen atom is this?
The mass of a theoretical particle that may be associated with the unification of the electroweak and strong forces is 1014 GeV/c2 .(a) How many proton masses is this?(b) How many electron masses is this? (This indicates how extremely relativistic the accelerator would have to be in order to make the particle, and how large the relativistic quantity γ would have to be.)
Certain spiral galaxy is 9.7 Mpc away from us. How fast in km/s is this galaxy moving away from us?
One possible decay mode of the neutral kaon is K0→π0+π0. The rest energiesof the K0andπ0are 498 MeV and 135 MeV, respectively. If the kaon is initially atrest when it decays, (a) How much energy is released in the decay? (b) What are themomentum and relative directions of the two neutral pions (π0)?
The average particle energy needed to observe unification of forces is estimated to be 1019 GeV . (a) What is the rest mass in kilograms of a particle that has a rest mass of 1019 GeV/c2 ? (b) How many times the mass of a hydrogen atom is this?
What is a rest-frame spectrum of a typical BCG?
Suppose a distant quasar has a redshift of 6. At what fraction of the speed of light is the quasar moving away? z = Δλ/λ = v/c
(a) Calculate The approximate age of the universe from the average value of the Hubble constant, To do this, calculate the time it would take to travel 1 Mly at a constant expansion rate of 20 km/s. (b) If deceleration is taken into account, would the actual age of the universe be greater or less than that found here? Explain.
In the Check Your Learning section of Example 27.1, you were told that several lines of hydrogen absorption in the visible spectrum have rest wavelengths of 410 nm, 434 nm, 486 nm, and 656 nm. In a spectrum of a distant galaxy, these same lines are observed to have wavelengths of 492 nm, 521 nm, 583 nm, and 787 nm, respectively. The example demonstrated that z=0.20 for the 410 nm line. Show that you will obtain the same redshift regardless of which absorption line you measure.
How can the lifetime of a particle indicate that its decay is caused by the strong nuclear force? How can a change in strangeness imply which force is responsible for a reaction? What does a change in quark ?avor imply about the force that is responsible?
(a) What is the approximate speed relative to us of a galaxy near the edge of the known universe, some 10 Gly away? (b) What traction of the speed of light is this? Note that we have observed galaxies moving away from us at greater than 0.9c.