Answer:
15000 m/s
Explanation:
You just need to multiply the wavelength with the frequency.
Answer:
W = M g = 150 kg * 9.81 m/s^2 = 1470 N
You were only given 3 significant figures in the question.
Answer:
Light waves are electromagnetic waves while sound waves are mechanical waves. :)
Answer:
statements <em><u>2, 3, 4, and 7</u></em> are true
Explanation:
Answer:
The force is 
Explanation:
The diagram for this question is shown on the first uploaded image
From the question we are told that
The weight of the gate is 
The vertical component of F is 
From the diagram , taking moment about the pivot we have

Where
is the weight of the gate evaluated as

=> 
=> 
=> 