<span>The energy removed from a 450 g block of ice can only be done with a few options: a colder freezing facility, liquid nitrogen, or stopping the energy at all and adding dry ice for a brief period. The 450 g block should loose heat energy faster in a thermostat set at -20 degrees just to maintain the ice formation.</span>
Answer:
187.37 m
Explanation:
The wavelength of an electromagnetic wave is given by:

where
c is the speed of light
f is the frequency
We see that the wavelength is inversely proportional to the frequency: this means that the shortest am wavelength will occur at the highest am frequency, which is

And substituting also the speed of light

We find the wavelength:

Answer:
The angular separation equals 
Explanation:
We have according to Snell's law


Using this equation for both the colors separately we have

Similarly for violet light we have

Thus the angular separation becomes

The strength of the gravitational force between two objects depends on two<span> factors, mass and distance. the </span>force<span> of </span>gravity<span> the masses exert on each other. If one of the masses is doubled, the </span>force<span> of </span>gravity between<span> the </span>objects<span> is doubled. thats what i got..</span>