Here the weight is hung from the thread inside the ceiling of train
now the FBD of train is analysed
We can say


now by ratio of two equations we have

this shows that train must be in accelerating condition due to which the thread is making an angle with the vertical
now we will have
2 The train is not an inertial frame of reference.
Since train is accelerating so it must be non inertial frame
5 The train may be moving at a constant speed in a circle.
Since its moving in circle so it is in accelerating condition
8 The train must be accelerating.
Answer:
Most earthquakes and volcanoes occur because of the movement of the plates, especially as plates interact at their edges or boundaries.
Explanation:
Answer:
B. Air
Explanation:
I'm taking the exam rn ^^
Answer:
the pressure fluctuation is LONGITUDINAL
Explanation:
Sound waves are an oscillating movement of air particles, this can be analyzed in two different, but equivalent ways, as an air oscillation and with a pressure wave due to these oscillations.
The expression for the wave is
ΔP = Δo sin (kx - wt)
Therefore, the pressure variation is in the same direction as the displacement variation, consequently the pressure fluctuation is LONGITUDINAL
The heat anticipator in a thermostat control circuit in the heating mode is active when the Heating contact is closed.
The heat anticipator fine tunes the point at which the thermostat turns off the furnace burners. When the heat anticipator in a thermostat is out of adjustment, it can cause the furnace to exhibit symptoms of short cycling or to exceed or never reach the desired thermostat heat setting.