So what we can do is apply the<span> Hooke's law wich states that
F = -kx ( P.S the -ve sign means opposite in direction )
Also we will need to determine the spring's constant with the formula:
k = F / x
Where F = the force ( = 20 N )
x = the displacement of the end of the spring from it's position ( = 0.20 m )
k = the spring's constant ( = unknown )
So this would be: k = 20 / 0.20 = 100 N/m
The period of oscillation of 4 kg : T = 2 * pi * square root m / k
T = 2 * pi * square root 4 / 100
T = 1.256 seconds
Hope it helps</span>
1. Magnets attract iron and other ferromagnetic materials such as neodymium and cobalt.
2. Magnets attract or repel other magnets.
3. In addition one part of a magnet will always point north when allowed to swing freely.
Mass and velocity I think
Answer:
The person's ear canal length is 2.91 cm.
Explanation:
Given that,
Frequency = 3000 Hz
Temperature = 30°C
We need to calculate the speed
Using equation of sound wave with temperature
[texs]v(t)=331+0.6\times T[/tex]
Put the value of T
We need to calculate the length
Using formula of closed organ pipe
Where, L = length
v = velocity
f = frequency
Put the value into the formula
Hence, The person's ear canal length is 2.91 cm.
Atoms and elements are pure substances.
