Answer:
b)
Explanation:
Rotational inertia of the sphere: 
Rotational inertia of hollow sphere: 
Rotational inertia of flat disk: 
The largest value is 2/3 mr², therefore, hollow sphere's inertia is largest.
Answer:
Average speed = 1.2 m/s
Average velocity = 0.4 m/s
Explanation:
Average speed = total distance/total time
Average speed = (40 + 20)/(40 + 10)
Average speed = 60/50
Average speed = 1.2 m/s
Average velocity = displacement/time
Now, she ran 40 m south and ran 20 m back north which is in the direction of where she began the journey.
Thus;
Displacement = 40 - 20 = 20 m
Average velocity = 20/50 = 0.4 m/s
Answer:
If you mean dew not few, than the cause of dew is condensation.
Explanation:
At night, the air temperature gets lower, causing the water in its vapor state in the air to turn to the liquid state.The water will gather on most solid surfaces, especially grass and other plants. The dew came from the water in the air.
Answer:
0.1 L
Explanation:
From the question given above, we obtained the following data:
Initial volume (V₁) = 0.05 L
Initial Pressure (P₁) = 207 KPa
Final pressure (P₂) = 101 KPa
Final volume (V₂) =?
We can obtain the new volume (i.e the final volume) of the gas by using the Boyle's law equation as illustrated below:
P₁V₁ = P₂V₂
207 × 0.05 = 101 × V₂
10.35 = 101 × V₂
Divide both side by 101
V₂ = 10.35 / 101
V₂ = 0.1 L
Thus, the new volume of the gas is 0.1 L
