Newton's first law of motion. An object in motion tends to stay in motion. Since there is no friction in space to slow it down it just keeps going
Plate tectonics and the earth is separated into many pieces which move around and create earthquakes and volcanoes
Answer:
497.6 N
Explanation:
From the question,
The net force on the skydiver = weight of the skydiver- the resistive force of air
F' = W-F...................... Equation 1
Where W = weight of the skydiver, F = resistive force of air.
But,
W = mg................ Equation 2
Where m = mass of the skydiver, g = acceleration due to gravity.
Substitute equation 2 into equation 1
F' = mg-F............ Equation 3
Given: m = 87 kg, F = 355 N, g = 9.8 m/s²
Substitute these values into equation 3
F' = 87(9.8)-355
F' = 852.6-355
F' = 487.6 N
A. 409 Hz
The fundamental frequency of a string is given by:
where
L is the length of the wire
T is the tension in the wire
m is the mass of the wire
For the piano wire in this problem,
L = 0.400 m
T = 1070 N
m = 4.00 g = 0.004 kg
So the fundamental frequency is
B. 24
For this part, we need to analyze the different harmonics of the piano wire. The nth-harmonic of a string is given by
where 
is the fundamental frequency.
Here in this case
A person is capable to hear frequencies up to
So the highest harmonics that can be heard by a human can be found as follows:
neutralization reactions occur when you combine two extremely reactive substances together for the purpose of rendering them inactive, or neutral.
