Asked by Julie
                The temperature of the cosmic background radiation is measured to be 2.7 K. What is the wavelength of the peak in the spectral distribution at this temperature?
What frequency corresponds to this wavelength?
            
            
        What frequency corresponds to this wavelength?
Answers
                    Answered by
            Anonymous
            
    A 112 g hockey puck glides across a frictionless ice surface with no horizontal forces acting on it. If the puck's velocity is 22.5 m/s to the right at t = 0 s, what will the puck's horizontal velocity be at t = 225 ms? Round your answer to the nearest 0.1 m/s.
    
                    Answered by
            kt
            
    25 m/s to the right
    
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