If what your trying to ask is what does it mean its calcium
Repeat the experiment
Explanation:
To increase the validity of the results obtained from the single experiment, the students should be encouraged to repeat the experiments more number of times as much as possible.
In an experiment, scientist always try to limit errors by making precise and accurate observation. A single observation does not really represent a precise and accurate finding. When an experiment is repeated as often as possible, the reliability of the conclusion drawn from the hypothesis testing will improve and the results can be accepted to be valid.
A single observation/experiment is not valid enough.
Learn more:
Experiments brainly.com/question/5096428
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Answer:
All the planets have nearly circular orbit except the Pluto
Explanation:
Planets closer to the Sun move around their orbits at a very high speed than planets farther from the Sun.
All the planets except Pluto, orbit the Sun in nearly the same plane.
All the planets have nearly circular orbits except Pluto because of it's distance from the sun which is over 5,000,000,000km
Answer:
[negative sign denotes that it is moving away]
Explanation:
Actual wavelength of hydrogen spectral lines, 
Apparent wavelength of hydrogen spectral lines from a star, 
<u>So, shift in wavelength</u>:
Using Doppler's shift:
[negative sign denotes that it is moving away]
Answer:
W = 32.03316 N
Explanation:
given,
Amplitude, A = 34.7998 cm = 0.347998 m
spring constant, k = 13.5666 N/m
maximum speed, v = 70.8966 cm/s = 0.708966 m/s
acceleration due to gravity, g = 9.8 m/s²
weight of the banana = ?
using maximum speed formula
squaring both side
m = 3.26868 Kg
weight
W = mg
W= 3.26868 x 9.8
W = 32.03316 N
hence, weight of Banana is equal to W = 32.03316 N
