What is current temperature and peak wavelength

Reference no: EM133618

Question1

In a “Rotor-ride” at a carnival, people rotate in a vertical cylindrically walled “room.” If the room radius was 5.5 m, and the rotation frequency 0.50 revolutions per second when the floor drops out, what minimum coefficient of static friction keeps the people from slipping down? People on this ride said they were “pressed against the wall.” Is there actually an outward force pressing them against the wall? If so, what is its source? If not, what is the proper description of their situation (besides nausea)?

Question2

What is current temperature and peak wavelength of the cosmic microwave background (CMB)? Knowing that peak wavelength scales as the inverse of (1+z) where z is the redshift, even as the temperature scales as (1 + z), compute the peak wavelength and temperature at matter-radiation decoupling (z ' 1000).Will most of CMB photons, at the time of decoupling, have enough energy to ionize hydrogen atoms? So does it make sense to you that scientists say that the Universe "recombine" at this redshift (that means electrons "attach" to protons to form neutral hydrogen)?

Reference no: EM133618

Questions Cloud

Compute the average intensity : Compute the average intensity

Csr is growing in the tourism sector : public sector be engrossed in tourism, economic impacts of tourism, geography and socioeconomic structures have exposed contrasting impacts on some economies, Socio-cultural impacts of tourism are hard to assess, but are often more significant that o..

The incident electron loses energy : The incident electron loses energy The incident electron emits an x-ray.

How rapidly atom are assembled in this protein synthesis : How rapidly atom are assembled in this protein synthesis

What is current temperature and peak wavelength : What is current temperature and peak wavelength What is the proper description of their situation

Distinguish between the terms vision and mission : Distinguish between the terms Vision and Mission Briefly describe Porter's Generic Strategies

Direction of the surface winds : Direction of the surface winds What is the expected composition

The change in the kinetic energy of the system : The change in the kinetic energy of the system

What portion of jet power lost to producing sound : What portion of jet power lost to producing sound Powdered steel is placed in a container

User Account

All Pages