Answer:
1.59 x 10⁻²⁵ J.
Explanation:
- The energy of a photon is calculated Planck - Einstein's equation:
E = h ν
, where
E is the energy of the photon,
h is Planck's constant <em>(h = 6.626 x 10
⁻³⁴ J.s)</em>
ν is the frequency of the photon
-
There is a relation between the frequency (ν
) and wave length (λ).
λ.ν = c,
where c is the speed of light in vacuum (c = 3
.0 x 10
⁸ m/s).
λ = 125 cm = 1.25 m.
<em>Now, E = h.c/λ.</em>
∴ E = h.c/λ = (6.626 x 10
⁻³⁴ J.s) (3
.0 x 10
⁸ m/s) / (1.25 m) = 1.59 x 10⁻²⁵ J.
The Answer would be C. Without plants in the ecosystem, it could not feed. Plants are mainly the only producers that feed 3rd level consumers which feed 2nd level consumers which feed 1st level consumers.
Explanation:
<em>Phys</em><em>ical</em><em> </em><em>Change </em><em>is</em><em> </em><em>a</em><em> </em><em>type </em><em>of </em><em>change </em><em>where</em><em> </em><em>by</em><em> </em><em>no</em><em> </em><em>new</em><em> </em><em>chemical </em><em>substance</em><em> </em><em>is</em><em> </em><em>formed</em><em>.</em><em> </em><em>Physical</em><em> </em><em>changes</em><em> </em><em>are </em><em>reversible</em><em>.</em><em> </em><em>whilst</em><em> </em><em>Chemical</em><em> </em><em>change </em><em>is</em><em> </em><em>a</em><em> </em><em>change </em><em>where </em><em>new</em><em> </em><em>chem</em><em>i</em><em>c</em><em>a</em><em>l</em><em> </em><em>substance</em><em> </em><em>is</em><em> </em><em>always</em><em> </em><em>formed.</em><em> </em><em>Chemical</em><em> </em><em>changes </em><em>are</em><em> </em><em>usually</em><em> </em><em>irreversible</em><em>.</em>
<em>Examples </em><em>of </em><em>Physical</em><em> </em><em>Change</em><em> </em><em>include</em><em>;</em>
<em>Melting</em><em> </em><em>of</em><em> </em><em>Ice</em>
<em>Melting</em><em> </em><em>of </em><em>Candle</em>
<em>Grinding </em><em>of </em><em>chalk</em>
<em>Magnetization </em><em>of</em><em> </em><em>Iron</em>
<em>Examples</em><em> </em><em>of</em><em> </em><em> </em><em>Chemical</em><em> </em><em>Change</em><em> </em><em>includes</em><em>;</em>
<em>Cooking</em><em> </em><em>of </em><em>food</em>
<em>Rusting </em><em>of </em><em>Iron</em>
<em>Burning</em><em> </em><em>of </em><em>Charcoal</em>
Answer:
There are many effects of radiation to the human body. (if you watch the 100, you'll see what happens)
Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as
1. weakness
a/ fatigue,
b/ fainting,
c/ confusion.
2.Bleeding from the nose,
a/ mouth,
b/ gums,
c/ rectum
3. Bruising,
a/ skin burns,
b/ open sores on the skin,
c/ sloughing of skin.
4. Dehydration.
5. Diarrhea, bloody stool.
6. Fever.
7. Hair loss.
8. Inflammation of ex
Answer:
False. In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.
Explanation:
Hope this helps! :)
