0.49 N
On a spring scale that measures force, a reading shows the
force of an object to be about half way between 0 N and 1 N. 0. 49 Newton is
the most accurate measurement for the force.
If we cluster the number values of 0 N to 1 N
It would be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0
N.
These numbers indicate the micro intervals of 0-1. It cannot
be the other given because the other values are either higher or lower which
exceeds the 0-1 scale. Observe.
Answer:
The spectrum of a star can be used to determine its composition by observing the spectrum lines that gains by the diffraction pattern of different light wavelengths and the Fraunhofer lines observed through spectroscope.
Explanation:
As far as we all have seen the attractive rainbow colours in the moist daylight, we know the seven colours that are visible to our eyes. what we see is actually the spectrum of the white light emitted by the light sources or we can say the Sun which is a star.
With the invention of spectroscopy, it gets feasible for us to evaluate the different spectrum displayed by the prism and diffraction grating. The light emitted from the source or stars as we can say in this discussion, are spread into its constituent visual wavelengths that is known as the Spectrum. This method is known as spectroscopy.
With the help of spectrometer, astronomers can easily observe the wavelengths, their properties and eventually judge the elements through which the lights is emitted.
For example, in case of Sun, it is composed of Hydrogen (87%), Helium (10%), and other elements (3%). With the estimation of the strength of various spectral lines, it gets possible to find various elements and their amount with which they are composed such as the Sun is mostly made of the Hydrogen and helium gas.
in this way, we can easily observe the elements according to the spectral pattern studied through spectrometer and compare them with the elements in the periodic table. Hence, we can determine the composition of stars.
Answer:
![v_{net} = 4\sqrt3 mph](https://tex.z-dn.net/?f=v_%7Bnet%7D%20%3D%204%5Csqrt3%20mph)
Explanation:
Since we know that the displacement of the boat in the direction of flow of the river must be zero
so we have to at such an angle with shore so that the component of velocity of boat along the direction of flow must be equal and opposite to the flow velocity of the water
so we will have
![v cos\theta + v_r = 0](https://tex.z-dn.net/?f=v%20cos%5Ctheta%20%2B%20v_r%20%3D%200)
![8 mph cos\theta + 4 mph = 0](https://tex.z-dn.net/?f=8%20mph%20cos%5Ctheta%20%2B%204%20mph%20%3D%200)
![cos\theta = -\frac{4 mph}{8 mph}](https://tex.z-dn.net/?f=cos%5Ctheta%20%3D%20-%5Cfrac%7B4%20mph%7D%7B8%20mph%7D)
![cos\theta = -0.5](https://tex.z-dn.net/?f=cos%5Ctheta%20%3D%20-0.5)
![\theta = 120 ^o](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20120%20%5Eo)
Now the resultant velocity of the boat is in perpendicular to the flow of water
so we will have
![v_{net} = v sin\theta](https://tex.z-dn.net/?f=v_%7Bnet%7D%20%3D%20v%20sin%5Ctheta)
![v_{net} = 8 sin60](https://tex.z-dn.net/?f=v_%7Bnet%7D%20%3D%208%20sin60)
![v_{net} = 4\sqrt3 mph](https://tex.z-dn.net/?f=v_%7Bnet%7D%20%3D%204%5Csqrt3%20mph)
Photosynthesis is the name given to the set of chemical reactions performed by plants to convert energy from the sun into chemical energy in the form of sugar. Specifically, plants use energy from sunlight to react carbon dioxide and water to produce sugar (glucose) and oxygen. Many reactions occur, but the overall chemical reaction for photosynthesis is:
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
So it would be C, I hope this helped! :)