Answer:1.55 times 
Explanation:
Given
First wavelength
Second wavelength
According wien's diplacement law

where 
T=Temperature
Let  be the temperatures corresponding to
 be the temperatures corresponding to  respectively.
 respectively.



Thus object with  is 1.55 times hotter than object with wavelength
 is 1.55 times hotter than object with wavelength 
 
        
             
        
        
        
Answer:
 speed of each marble after collision will be 1.728 m/sec
Explanation:
We have given mass of the marble 
Velocity of marble 
Its collides with other marble of mass 25 gram 
So mass of other marble 
Second marble is at so 
We have to find the velocity of second marble 
From momentum conservation we know that 
 , here v is common velocity of both marble after collision
, here v is common velocity of both marble after collision 
So 
v = 1.428 m /sec
So speed of each marble after collision will be 1.728 m/sec
 
        
             
        
        
        
Answer:
If gravity on Earth is increased, this gravitational tugging would have influenced the moon's rotation rate. If it was spinning more than once per orbit, Earth would pull at a slight angle against the moon's direction of rotation, slowing its spin. If the moon was spinning less than once per orbit, Earth would have pulled the other way, speeding its rotation.
 
        
             
        
        
        
Start with what the paragraph is about and put it basically in your own words
        
                    
             
        
        
        
Answer:
The combining of light nuclei is called nuclear fusion.