Answer:
U = 2,195 10⁵ J
Explanation:
The potential energy is
U = m g and
in this case each person has a mass of 75 kg and the elevator has a mass of 500 kg, the total mass is
m_total = m_elevator + 4 m_person
m_total = 500 + 4 75
m_toal = 800 kg
let's calculate
U = 800 9.8 28
U = 2,195 10⁵ J
Answer:
emission line or absorption line
Explanation:
A spectral line is uniform bands of bright and dark fringes. visible spectrum are just due to string spectral line which is unique for a different element.
when there is the transmission of an electron from one energy to another ( higher to lower energy level), there is the emission of photons that lead to emission-line on the spectrum while on the other side, the absorption line is formed when electron moves to the next level by absorbing electron.
Answer:
4.12 m/s^2
Explanation:
unbalanced force means the presence of resultant force (net force)
f = 28N
m = 6.8kg
a = ?
? = 28/6.8
= 4.1176...
approximately = 4.12 m/s^2
Answer:
The expression for the period of the pendulum is
T=2π√l/g
Explanation
Kindly find attached document for the analysis of the pendulum and the derivation for the period
What is a simple harmonic motion?
Simple harmonic motion is defined as the to and fro motion of an object or a particle whose acceleration is directly proportional to its displacement from a fixed point and is always directed towards that point.