![\qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star](https://tex.z-dn.net/?f=%20%5Cqquad%20%5Cqquad%20%20%5Cbf%20%5Chuge%5Cstar%20%5C%3A%20%20%5C%3A%20%20%5Clarge%7B%20%20%5Cunderline%7BAnswer%7D%20%7D%20%20%5Chuge%20%5C%3A%20%20%5C%3A%20%5Cstar)
![\textsf{ \underline{\underline{Steps to solve the problem} }:}](https://tex.z-dn.net/?f=%5Ctextsf%7B%20%20%5Cunderline%7B%5Cunderline%7BSteps%20to%20solve%20the%20problem%7D%20%7D%3A%7D)
In the given equation :
![\qquad❖ \: \sf \:y = a + b + c( {t}^{2} )](https://tex.z-dn.net/?f=%20%5Cqquad%E2%9D%96%20%5C%3A%20%20%5Csf%20%5C%3Ay%20%3D%20a%20%2B%20b%20%2B%20c%28%20%7Bt%7D%5E%7B2%7D%20%29)
If three physical quantities is to be added or subtracted, they must have same dimensions.
So, dimension of y = dimension of c(t²)
And we already know,
- y = M⁰L¹T⁰ [ since it represents distance/length ]
- t = M⁰L⁰T¹ [ since it represents time ]
( by squaring )
Now, we need to calculate dimension and unit of c :
![\qquad❖ \: \sf \:dim(y) = dim(c {t}^{2} )](https://tex.z-dn.net/?f=%20%5Cqquad%E2%9D%96%20%5C%3A%20%20%5Csf%20%5C%3Adim%28y%29%20%3D%20dim%28c%20%7Bt%7D%5E%7B2%7D%20%29)
![\qquad❖ \: \sf \:M⁰L¹T⁰ = dim(c) \sdot M⁰L⁰T²](https://tex.z-dn.net/?f=%20%5Cqquad%E2%9D%96%20%5C%3A%20%20%5Csf%20%5C%3AM%E2%81%B0L%C2%B9T%E2%81%B0%20%3D%20dim%28c%29%20%5Csdot%20M%E2%81%B0L%E2%81%B0T%C2%B2)
![\qquad❖ \: \sf dim(c) = \frac{M⁰L¹T⁰}{ M⁰L⁰T²}](https://tex.z-dn.net/?f=%20%5Cqquad%E2%9D%96%20%5C%3A%20%20%5Csf%20dim%28c%29%20%20%3D%20%20%5Cfrac%7BM%E2%81%B0L%C2%B9T%E2%81%B0%7D%7B%20M%E2%81%B0L%E2%81%B0T%C2%B2%7D%20)
![\qquad❖ \: \sf dim(c) = {M⁰L¹T {}^{ - 2} }](https://tex.z-dn.net/?f=%20%5Cqquad%E2%9D%96%20%5C%3A%20%20%5Csf%20dim%28c%29%20%20%3D%20%20%7BM%E2%81%B0L%C2%B9T%20%7B%7D%5E%7B%20-%202%7D%20%7D)
Now, we got the dimension of c as :
So, it's SI unit will be :
[ since SI unit of length/distance = m, and SI unit of Time = sec, hence SI unit of T² = s² ]
Answer:
It is used in MRI because it does not damage cells
Radio waves are used for space research because they have very long wavelengths
Explanation:
Many parts of the electromagnetic spectrum are applied in clinical diagnosis and treatment of illnesses. However, these highly ionizing radiation damage cells and its dosage must be carefully managed to avoid creating radiation related health problems for the patients.
Radio waves can be used in MRI without issues because the energy of the radiation is not sufficient to cause damage to cells but is sufficient to provide images for the sake of medical diagnosis.
Secondly, radio waves have long wavelength. This property is suitable for long range
communication. Hence it can be used in space research
Answer:
Explanation:
Work required = q x V
where q is charge on electron and V is potential difference
= 1.6 x 10⁻¹⁹ x 12
= 19.2 x 10⁻¹⁹ J
Physics is a very important part of Architecture. It helps you to understand how forces work on things that you build, so that they don't collapse. So yes, you do.
Answer:
It is difficult to magnetize.