Answer:
your answer would be Sebaceous glands
Explanation:
these glands secrete oil/wax called sebum to lubricate and waterproof your skin. Hope this helps :)
Answer:
Explanation:
1.) ![Q=MC_v\delta T\\=\rho \times v \times C_v \times \delta T\\=1.2 \times 7 \times 7 \times 3 \times 720 \times (324-295)\\=3683232J](https://tex.z-dn.net/?f=Q%3DMC_v%5Cdelta%20T%5C%5C%3D%5Crho%20%5Ctimes%20v%20%5Ctimes%20C_v%20%5Ctimes%20%5Cdelta%20T%5C%5C%3D1.2%20%5Ctimes%207%20%5Ctimes%207%20%5Ctimes%203%20%5Ctimes%20720%20%5Ctimes%20%28324-295%29%5C%5C%3D3683232J)
2.) COP
![= \frac{Q_{abs}}{W}=3.88\\\\work=949286.6J](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7BQ_%7Babs%7D%7D%7BW%7D%3D3.88%5C%5C%5C%5Cwork%3D949286.6J)
3.) Rate of heat absorption
COP![\times Power\\](https://tex.z-dn.net/?f=%20%5Ctimes%20Power%5C%5C)
![=3.88\times 1010watt=3918.8watt](https://tex.z-dn.net/?f=%3D3.88%5Ctimes%201010watt%3D3918.8watt)
Therefore, cooling in minutes=![\frac{\frac{3683232}{3918.8}}{60}=15.66mins](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7B3683232%7D%7B3918.8%7D%7D%7B60%7D%3D15.66mins)
COP cannot cycle= ![\frac{295}{324-295}\\\\=10.17=\frac{Q_{abs}}{power}](https://tex.z-dn.net/?f=%5Cfrac%7B295%7D%7B324-295%7D%5C%5C%5C%5C%3D10.17%3D%5Cfrac%7BQ_%7Babs%7D%7D%7Bpower%7D)
Rate of heat absorption ![=(1010\times 10.17)watt=10271.7min](https://tex.z-dn.net/?f=%3D%281010%5Ctimes%2010.17%29watt%3D10271.7min)
cooling time in minutes with cannot cycle![=\frac{\frac{3683232}{10271.7}}{60}=5.98mins](https://tex.z-dn.net/?f=%3D%5Cfrac%7B%5Cfrac%7B3683232%7D%7B10271.7%7D%7D%7B60%7D%3D5.98mins)
Answer:
0.324×10⁻³ m/s²
Explanation:
G=Gravitational constant=6.67408×10⁻⁸ m³/kg s
m₁=m₂=Mass of the ships=42000×10³ kg
r=Distance between the ships=93 m
The ships are considered particles
From Newtons Law of Universal Gravitation
![F=G\frac {m_1m_2}{r^2}\\Here\ m_1=m_2\ hence\ m_1\times m_2=m_1^2\\\Rightarrow F=G\frac {m_1^2}{r^2}\\\Rightarrow F=\frac{6.67408\times 10^{-8}\times (42000\times 10^3)^2}{93^2}\\\Rightarrow F=13612.0674\ N\\](https://tex.z-dn.net/?f=F%3DG%5Cfrac%20%7Bm_1m_2%7D%7Br%5E2%7D%5C%5CHere%5C%20m_1%3Dm_2%5C%20hence%5C%20m_1%5Ctimes%20m_2%3Dm_1%5E2%5C%5C%5CRightarrow%20F%3DG%5Cfrac%20%7Bm_1%5E2%7D%7Br%5E2%7D%5C%5C%5CRightarrow%20F%3D%5Cfrac%7B6.67408%5Ctimes%2010%5E%7B-8%7D%5Ctimes%20%2842000%5Ctimes%2010%5E3%29%5E2%7D%7B93%5E2%7D%5C%5C%5CRightarrow%20F%3D13612.0674%5C%20N%5C%5C)
![F=ma\\\Rightarrow 13612.0674=42000\times 10^3a\\\Rightarrow a=0.324\times 10^{-3}\ m/s^2](https://tex.z-dn.net/?f=F%3Dma%5C%5C%5CRightarrow%2013612.0674%3D42000%5Ctimes%2010%5E3a%5C%5C%5CRightarrow%20a%3D0.324%5Ctimes%2010%5E%7B-3%7D%5C%20m%2Fs%5E2)
∴Acceleration of one of the liners toward the other due to their mutual gravitational attraction is 0.324×10⁻³
Answer:
they can blend in with their suroundings
Explanation:
Answer:
0.2 Hz
Explanation:
Frequency: This can be defined as the number of circles completed by a wave in one seconds. The s.i unit is hertz.
From the question,
If 4 Waves arrives on the shore every 20 seconds,
Then,
x waves will arrives on the shore in one seconds
Solving for x
x = (4×1)/20
x = 0.2 Hz
Hence the frequency of the wave is 0.2 Hz