Answer:
The length of the train in the frame of the lecture room is 40.59 m.
Explanation:
Given that,
Speed = 0.894 c
Original length = 90.6 m
We need to calculate the length of the train in the frame of the lecture room
Using formula of length contraction
Where, 
=original length
v = speed of train
Put the value into the formula
Hence, The length of the train in the frame of the lecture room is 40.59 m.
B. An ear squeeze occurs when the pressure inside the middle ear space is less than ambient (surrounding) pressure.
<h3>When external ear squeeze occurs</h3>
External ear squeeze occurs when gas trapped in the external ear canal remains at atmospheric pressure while the external water pressure increases during descent.
Thus, we can conclude that, an ear squeeze occurs when the pressure inside the middle ear space is less than ambient (surrounding) pressure.
Learn more about ear squeeze here: brainly.com/question/11430998
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i dont know the answer of your question correctly
Answer:
SI unit is an international system of measurements that are used universally in technical and scientific research to avoid the confusion with the units. Having a standard unit system is important because it helps the entire world to understand the measurements in one set of unit system.
Answer:
the answer is the explaination
Explanation:
Present beach erosion prevention methods include sand dunes, vegetation, seawalls, sandbags, and sand fences. Based on the research conducted, it is evident that new ways to prevent erosion must be obtained. Each way that is currently used has extensive negative effects on beaches and their natural tendencies.
