The answer to the first one is sublimation.
Answer:
1.F: About 6*10^14 Hz
2.E: About 4*10^ -19 J
Explanation:
Frequency: We knew that the speed of a wave is its wavelength(λ)* frequency(f, in Hz). By the wave-particle duality we know we can calculate the frequency of light in the same way. So, c=495nm *f, f=c/495nm=> (299,792,458 m/s) / (4.95*10^-7 m)
=6.05*10^14 /s
Energy: The energy photon contains can be calculate by this formula-- E=hf
f is the frequency and h is Planck's constant which is about 6.62 ×10^-34 *m^2*kg/s (after dimensional analysis ) =6.62*10^ -34 J*s.
So, the energy of a blue photon is (6.05*10^14)*(6.62*10^-34)=40.051*10^-20= 4.051*10^-19 J
Answer:
A physical matter
Explanation:
A kind of matter with uniform physical properties
Answer:
The magnitude of minimum potential difference is 1800 V
Explanation:
Given:
Electric field 
Gap between electrodes 
m
For finding the minimum potential difference,
V
Therefore, the magnitude of minimum potential difference is 1800 V
The voltage released because the charges in the current dropped electric potential energy; this energy loss occured due to the resistance of the metal strips.
<u>Explanation:</u>
- Current flows from huge voltage (high potential) to base voltage (low potential).
- So the end of the strip wherever the current goes at a higher voltage than the end of the strip where the current leaves.
- The voltage released because the charges in the current dropped electric potential energy; this energy loss occured due to the resistance of the metal strips.
- The electric potential energy converted into thermal energy, heating the strips.
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