Answer:
<h2>3 m/s²</h2>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
![a = \frac{f}{m} \\](https://tex.z-dn.net/?f=a%20%3D%20%20%5Cfrac%7Bf%7D%7Bm%7D%20%20%5C%5C%20)
f is the force
m is the mass
From the question we have
![a = \frac{24}{8} \\](https://tex.z-dn.net/?f=a%20%3D%20%20%5Cfrac%7B24%7D%7B8%7D%20%20%5C%5C%20)
We have the final answer as
<h3>3 m/s²</h3>
Hope this helps you
Answer:
Green part of the visible spectrum.
X ray part of the electromagnetic spectrum.
Infrared part of the electromagnetic spectrum.
Explanation:
Wien's displacement law
![\lambda_{max}=\frac{b}{T}](https://tex.z-dn.net/?f=%5Clambda_%7Bmax%7D%3D%5Cfrac%7Bb%7D%7BT%7D)
Where, b = Wien's displacement constant = 2.898×10⁻³ mK
T = Temperature in kelvin
![\lambda_{max}=\frac{2.898\times 10^{-3}}{5800}\\\Rightarrow\lambda_{max}=0.499\times 10^{-6}=0.5\mu m=500\ nm](https://tex.z-dn.net/?f=%5Clambda_%7Bmax%7D%3D%5Cfrac%7B2.898%5Ctimes%2010%5E%7B-3%7D%7D%7B5800%7D%5C%5C%5CRightarrow%5Clambda_%7Bmax%7D%3D0.499%5Ctimes%2010%5E%7B-6%7D%3D0.5%5Cmu%20m%3D500%5C%20nm)
So, the wavelength would be of around the green part of the visible spectrum.
![\lambda_{max}=\frac{2.898\times 10^{-3}}{1\times 10^6}\\\Rightarrow\lambda_{max}=2.898\times 10^{-9}=2.898\ nm](https://tex.z-dn.net/?f=%5Clambda_%7Bmax%7D%3D%5Cfrac%7B2.898%5Ctimes%2010%5E%7B-3%7D%7D%7B1%5Ctimes%2010%5E6%7D%5C%5C%5CRightarrow%5Clambda_%7Bmax%7D%3D2.898%5Ctimes%2010%5E%7B-9%7D%3D2.898%5C%20nm)
So, the wavelength would be of around the X ray part of the electromagnetic spectrum.
Human body temperature = 37°C = 37+273.15 = 310.15 K
![\lambda_{max}=\frac{2.898\times 10^{-3}}{37+273.15}\\\Rightarrow\lambda_{max}=\frac{2.898\times 10^{-3}}{310.15}\\\Rightarrow\lambda_{max}=9.34\times 10^{-6}=934\ nm](https://tex.z-dn.net/?f=%5Clambda_%7Bmax%7D%3D%5Cfrac%7B2.898%5Ctimes%2010%5E%7B-3%7D%7D%7B37%2B273.15%7D%5C%5C%5CRightarrow%5Clambda_%7Bmax%7D%3D%5Cfrac%7B2.898%5Ctimes%2010%5E%7B-3%7D%7D%7B310.15%7D%5C%5C%5CRightarrow%5Clambda_%7Bmax%7D%3D9.34%5Ctimes%2010%5E%7B-6%7D%3D934%5C%20nm)
So, the wavelength would be of around the Infrared part of the electromagnetic spectrum.
Hi there! After doing an experiment or test multiple times you will be able to know the accuracy of your tests. If you do the test three times and they all have the same conclusion, it's safe to say that you're results are reliable. However if you do the test 4 times and they are all different then they are most likely unreliable. If this happens you should check your method and retry the experiment/test. Hope this helps, and have a lovely day!!
For this case you must first know the definition of density. D = m / v where, m: mass v: volume. You can then write the following hypothesis: IF you know two physical characteristics of an object then you can determine the density. First weigh the object, THEN measure its volume BECAUSE the density is the quotient between the mass and the volume of an object.