Answer: hello some of your values are wrongly written hence I will resolve your question using the right values
answer:
stiffness = 1.09 * 10^-6 N/m
Explanation:
Given data:
Length ( l ) = 16 m
radius of wire ( r ) = 3.5 m
mass ( m ) = 5kg
<u>Distance stretched ( Δl ) = 4 * 10^-3 m </u> ( right value )
<u>average bond length ( between atoms ) = 2.3 * 10^-10 m </u>( right value)
first step : calculate the area
area ( A ) = πr^2 = π * ( 3.5)^2 = 38.48 m^2
γ = MgL / A Δl
= [ (5 * 9.81 * 16 ) / ( 38.48 * (4.3*10^-3) ) ]
= 784.8 / 0.165 = 4756.36 N/m^2
hence : stiffness = γ * bond length
= 4756.36 * 2.3 * 10^-10 = 1.09 * 10^-6 N/m
Divide the distance by the speed:
(18 m) / (42 m/s) = 3/7 s ≈ 0.43 s
The image is at 2.5 m behind the mirror (virtual image)
Explanation:
We can solve the problem by using the mirror equation:
where
f is the focal length of the mirror
is the distance between the object and the mirror
is the distance between the image and the mirror
For a plane mirror, the focal length is infinite:
And in this problem, the distance of the object from the mirror is
Substituting and solving for , we find the location of the image:
And the negative sign means that the image is located behind the mirror, so it is virtual.
Learn more about reflection and refraction:
brainly.com/question/3183125
brainly.com/question/12370040
#LearnwithBrainly
Answer:
Give me what kind of example you need please so I can help you. Put it in the comments.
Explanation:
I believe the answer is the core.
