Answer:
C. 10⁻³ rads
Explanation:
Here, we shall use Rayleigh's Criterion to find out the angular resolution of Cat's eye during day light. Rayleigh's Criterion is written as follows:
θ = λ/a
where,
θ = angular resolution of Cat's eye = ?
λ = wavelength = 500 nm = 5 x 10⁻⁷ m
a = slit width of eye = 0.5 mm = 5 x 10⁻⁴ m
Therefore,
θ = (5 x 10⁻⁷ m/5 x 10⁻⁴ m)
Therefore,
θ = 0.001
θ = Sin⁻¹(0.001)
θ = 0.001 rad = 1 x 10⁻³ rad
Hence, the correct answer is:
<u>C. 10⁻³ rads</u>
Answer:
A rift valley is forming.
Explanation:
A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault.
A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface.
The arrows show the movement of the tectonic plates.
Hope this helps.
-Gumina
Answer:
just search it up you'll get ur answer
Answer:
A) ![Q_a=74256\ J](https://tex.z-dn.net/?f=Q_a%3D74256%5C%20J)
B) ![Q=93562560\ J](https://tex.z-dn.net/?f=Q%3D93562560%5C%20J)
Explanation:
Given:
- temperature of air,
![T_a=-19+273=254\ K](https://tex.z-dn.net/?f=T_a%3D-19%2B273%3D254%5C%20K)
- temperature of lungs,
![T_l=37+273=310\ K](https://tex.z-dn.net/?f=T_l%3D37%2B273%3D310%5C%20K)
- specific Heat exchanged from the lungs ,
![c_l=0.47\ J.kg^{-1}.K^{-1}](https://tex.z-dn.net/?f=c_l%3D0.47%5C%20J.kg%5E%7B-1%7D.K%5E%7B-1%7D)
- specific heat of air,
![c_a=1020\ J.kg^{-1}.K^{-1}](https://tex.z-dn.net/?f=c_a%3D1020%5C%20J.kg%5E%7B-1%7D.K%5E%7B-1%7D)
- mass of 1 L air,
![m'=1.3\ kg](https://tex.z-dn.net/?f=m%27%3D1.3%5C%20kg)
- breath rate,
![b=21\ breath.min^{-1}](https://tex.z-dn.net/?f=b%3D21%5C%20breath.min%5E%7B-1%7D)
A)
Now,
amount of heat needed to warm the air of lungs to the body temperature:
![Q_a=m'.c_a.\Delta T](https://tex.z-dn.net/?f=Q_a%3Dm%27.c_a.%5CDelta%20T)
![Q_a=1.3\times1020\times (310-254)](https://tex.z-dn.net/?f=Q_a%3D1.3%5Ctimes1020%5Ctimes%20%28310-254%29)
![Q_a=74256\ J](https://tex.z-dn.net/?f=Q_a%3D74256%5C%20J)
B)
Amount of heat lost per hour:
<u>No. of breaths per hour:</u>
![B=b.60](https://tex.z-dn.net/?f=B%3Db.60)
![B=21\times 60](https://tex.z-dn.net/?f=B%3D21%5Ctimes%2060)
![B=1260](https://tex.z-dn.net/?f=B%3D1260)
<u>Now the total loss of energy in 1 hr.:</u>
![Q=Q_a.B](https://tex.z-dn.net/?f=Q%3DQ_a.B)
![Q=74256\times 1260](https://tex.z-dn.net/?f=Q%3D74256%5Ctimes%201260)
![Q=93562560\ J](https://tex.z-dn.net/?f=Q%3D93562560%5C%20J)