Answer:
All of the colors of the visible light spectrum can expose the film
Explanation:
energy can be calculated with the following formula;
E=\frac{hc}{λ}
where h is planck constant = 6.62 * 10^{-34}
c is speed of light = 3* 10^{8}
λ is wavelength
visible light comprises of the ROYGBIV colors, which are red, orange yellow, green, blue, indigo and violet. For any of these colors to affect the film their energy must be greater than the minimum energy required to expose the film. However, violet with the smallest wavelength has the highest energy. we would calculate the energy of red color in the visible spectrum to see if it surpasses this minimum energy.
highest possible wavelength(red color) = 750*10^{-9}m
E(red light)=\frac{6.62*10^{-34} *3*10^{8} }{750 * 10^{-9} }
E= 2.646 * 10^{-19} J
≈ 2.65 * 10^{-19} J
this energy is for the highest wavelength exhibited by red color. for lower wavelengths of red color in the spectrum the film will be exposed and also this indicates that other colors in the spectrum will excite the film as they have very much lower wavelengths
Answer:
Water is condensing due to the difference in temperature between the inside and outside of your terrarium. If your cold house is cooling the temperature of the glass, when warm terrarium air hits the cold surface it reaches its dew point and condenses
Answer: Gravity
Explanation:A projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.
The mass number is the total number of protons and neutrons within an atom and since we know that the unknown element has 6 neutrons, we can simply subtract the number of neutrons from the mass number to get the number of protons.
17 - 6 = 11
There are 11 protons in this unknown element.
Extra:
The number of protons (+) and electrons (-) are equal in a neutral atom so since you know that there are 11 protons you also know that there are 11 electrons. On the periodic table, the element with 11 electrons is Na or Sodium.
Hope this helps! :)
