I'm assuming it was to keep the data consistent? The further you are from a heat source the less heat will get to you as the temperature tries to reach equilibrium and the waves start to spread out, so you should keep everything the same distance to get consistent results. I don't have any information so this is just my assumption
Answer:60 rev/min
Explanation:
Given
angular speed of first shaft
Moment of inertia of second shaft is seven times times the rotational speed of the first i.e. If I is the moment of inertia of first wheel so moment of inertia of second is 7 I
As there is no external torque therefore angular momentum is conserved
Answer:
15.13 m/s
Explanation:
The wave speed of the stretched rope can be calculated using the following formula
where is the tension on the rope and is the density of the rope per unit length
Answer & Explanation:
We can model the amount of substance remaining, S, after time, t, with the equation
, where
A is the quantity at time t = 0.
Divide both sides by A and multiply by 100 to obtain % remaining after t minutes.
100xS/A = 100x0.5^(-t/3)