1.Light-collecting area
2.Angular resolution
Answer:
7800kg/m³
Explanation:
Density of iron in CGS unit is 7.8 g/cm3. Its density is SI is
Given the density of iron = 7.8 g/cm3.
The SI units must be in kg/m³
7.8g = 7.8/1000 kg
7.8g = 0.0078kg
1cm³ = 0.000001m³
7.8g/cm³
= 0.0078/0.000001 kg/m³
= 7800kg/m³
Hence the density in SI unit is 7800kg/m³
The answer would be 2.63. Your welcome. This has been changed to the correct answer.
C is a non-metal and so is O. So the answer is CO
Answer:
The magnitude of angular acceleration is
.
Explanation:
Given that,
Initial angular velocity, ![\omega_i=3500\ rev/min=366.5\ rad/s](https://tex.z-dn.net/?f=%5Comega_i%3D3500%5C%20rev%2Fmin%3D366.5%5C%20rad%2Fs)
When it switched off, it comes o rest, ![\omega_f=0](https://tex.z-dn.net/?f=%5Comega_f%3D0)
Number of revolution, ![\theta=46=289.02\ rad](https://tex.z-dn.net/?f=%5Ctheta%3D46%3D289.02%5C%20rad)
We need to find the magnitude of angular acceleration. It can be calculated using third equation of rotational kinematics as :
So, the magnitude of angular acceleration is
. Hence, this is the required solution.