Answer:
k = 52.2 N / m
Explanation:
For this exercise we are going to use the conservation of mechanical energy.
Starting point. When it is 30 m high
Em₀ = K + U = ½ m v² + m g h
Final point. Right when you hit the water
= K_{e} = ½ k x²
in this case the distance the bungee is stretched is 30 m
x = h
as they indicate that there are no losses, energy is conserved
Em₀ = Em_{f}
½ m v² + m g h = ½ k h²
k =
let's calculate
k =
k = 52.2 N / m
The family of electromagnetic waves ranges from the Long Radio waves to the gama rays.
All of that contain electromagnetic energy and move at the speed of light.
But what distinguish one from another is their wavelengh.
Or, if you like, its counterpart: their frequency. (as can be seen in the equation c = λ . f where c is the speed of light, λ is the wavelengh and f is the frequency).
The shorter the wavelengh (the greater the frequency) more powerful (more energy it contains) is the electromagnetic wave.
From all the different kinds of electromagnetic waves of the spectrum, the less powerful (less energetic) are the Long Radio waves (λ in metres) and the more powerful ones are the gama rays (λ in m).
:-)
Answer:
It has potential energy
PE = 15450.75 J
Explanation:
we know its potential energy because the carriage is not moving, although it can
PE = mgh
in this case, m is 75, h is 21, and g is always 9.81
plug these in: PE = (75) (21) (9.81)
your answer: PE = 15450.75 J
Answer:
C
Explanation:
velocity = displacement (m) / change of time (s)
velocity = (400 + 300) / (100 + 400)
velocity = 1.4 m/s
Answer:
by the animeals and himens getting vood
Explanation: