I can think of two of them:
-- carbon monoxide
-- black soot
Answer:
75k
Explanation:
You can see solution in the picture
Answer:
6.8×10^6 m
Explanation:
f = velocity of light/ wavelength
440= 3×10^8 / wavelength
so
wavelength = 3×10^7/ 44
= 6.8×10^6 m
Answer:
This question is not complete but the completed question is below
Which statement is not correct for lamps connected in parallel?
A They can be switched on and off separately.
B They will remain bright if another lamp is connected in parallel.
C They share the supply voltage equally between them.
D They still operate if one lamp is removed.
The correct option is A
Explanation:
Lamps connected in series have the same voltage running across each lamp in the connection and will thus have the same brightness if any lamp is added or removed. This property also means they can only be switched on and off by a single switch, hence option A is not correct about lamps connected in parallel.
Answer
given,
diameter of planet = 1.8 x 10⁷ m
radius of planet = 0.9 x 10⁷ m
time period = 22.3 hours
the planet orbits 2.2 x 10¹¹ m period of 402 earth days.
acceleration= 12.2 m/s²
we know
![g = \dfrac{GM_{p}}{r^2}](https://tex.z-dn.net/?f=g%20%3D%20%5Cdfrac%7BGM_%7Bp%7D%7D%7Br%5E2%7D)
![M_{p} = \dfrac{gr^2}{G}](https://tex.z-dn.net/?f=M_%7Bp%7D%20%3D%20%5Cdfrac%7Bgr%5E2%7D%7BG%7D)
![M_{p} = \dfrac{12.2 \times (0.9 \times 10^7)^2}{6.67 \times 10^{-11}}](https://tex.z-dn.net/?f=M_%7Bp%7D%20%3D%20%5Cdfrac%7B12.2%20%5Ctimes%20%280.9%20%5Ctimes%2010%5E7%29%5E2%7D%7B6.67%20%5Ctimes%2010%5E%7B-11%7D%7D)
M_p = 1.48 x 10²⁵ Kg
b) Formula to calculate the mass of star
![M_{s} = \dfrac{4\pi^2}{GT_s^2}(R^3)](https://tex.z-dn.net/?f=M_%7Bs%7D%20%3D%20%5Cdfrac%7B4%5Cpi%5E2%7D%7BGT_s%5E2%7D%28R%5E3%29)
![M_{s} = \dfrac{4\pi^2}{6.67 \times 10^{-11} \times (402 \times 86400)^2}((2.2 \times 10^{11})^3)](https://tex.z-dn.net/?f=M_%7Bs%7D%20%3D%20%5Cdfrac%7B4%5Cpi%5E2%7D%7B6.67%20%5Ctimes%2010%5E%7B-11%7D%20%5Ctimes%20%28402%20%5Ctimes%2086400%29%5E2%7D%28%282.2%20%5Ctimes%2010%5E%7B11%7D%29%5E3%29)
M_s = 5.22 x 10³³ Kg