Answer:
By observing the color of lines in the spectrum.
Explanation:
There are two types of lines in the spectrum explained below:
i) Bright lines: Bright lines occurs on the spectrum when atoms emit photons. These bright lines show the emission line spectrum.
ii) Dark Lines: Dark lines occurs on the spectrum when atoms absorb photons. These black lines show the absorption line spectrum.
Hence, by observing the color of lines it is possible to identify emission line spectrum and absorption line spectrum.
Answer:
PE=0.29J
Explanation:
According to the description, there is a angle and in point swung upward of 70°
So,
Appling the equation of Potential Energy we have,
When it comes to organisms that help speed up the decay of biomes, worms
are wonderful creatures. They take almost anything that falls to the
earth and slowly erode it. Fungi is another option.
Answer: 4.17 m
Explanation: According to the law of conservation of energy, the elastic potential energy of the elastic material is used in launching the mass hence giving the body it potential energy.
Elastic potential energy = kx²/2
Potential energy = mgh
Where m = mass of object = 0.24kg
g = acceleration due to gravity = 9.8 m/s²
h = height =?
k = spring constant = 850 N/m
x = compression = 31cm = 0.13m
kx²/2 = mgh
kx² = 2× mgh
850 ×(0.31)² = 2 × 9.8 × h
h = 850 × (0.31)²/ 2 × 9.8
h = 81.685 / 19.6
h = 4.17 m