Answer
given,
mass of disk = 2 Kg
radius = 0.1 m
time = 10 sec
a) 800 rpm to rad/s
= ![800 \times \dfrac{2\pi}{60}](https://tex.z-dn.net/?f=800%20%5Ctimes%20%5Cdfrac%7B2%5Cpi%7D%7B60%7D)
= ![83.78\ rad/s](https://tex.z-dn.net/?f=83.78%5C%20rad%2Fs)
b) 740 rpm to rad/s
= ![740 \times \dfrac{2\pi}{60}](https://tex.z-dn.net/?f=740%20%5Ctimes%20%5Cdfrac%7B2%5Cpi%7D%7B60%7D)
= ![77.49\ rad/s](https://tex.z-dn.net/?f=77.49%5C%20rad%2Fs)
c) Angular acceleration
![\alpha = \dfrac{\omega_f - \omega_i}{t}](https://tex.z-dn.net/?f=%5Calpha%20%3D%20%5Cdfrac%7B%5Comega_f%20-%20%5Comega_i%7D%7Bt%7D)
![\alpha = \dfrac{83.78 -77.49}{10}](https://tex.z-dn.net/?f=%5Calpha%20%3D%20%5Cdfrac%7B83.78%20-77.49%7D%7B10%7D)
![\alpha =0.629\ rad/s^2](https://tex.z-dn.net/?f=%5Calpha%20%3D0.629%5C%20rad%2Fs%5E2)
d) moment of inertia of disc
![I = \dfrac{1}{2}mr^2](https://tex.z-dn.net/?f=I%20%3D%20%5Cdfrac%7B1%7D%7B2%7Dmr%5E2)
![I = \dfrac{1}{2}\times 2 \times 0.1^2](https://tex.z-dn.net/?f=I%20%3D%20%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%202%20%5Ctimes%200.1%5E2)
I = 0.01 Kg.m²
e) τ = I α
τ = 0.01 x 0.629
τ = 6.29 x 10⁻³ N.m
f) impulse = Force x time
![J= \dfrac{\tau}{r}\times t](https://tex.z-dn.net/?f=J%3D%20%5Cdfrac%7B%5Ctau%7D%7Br%7D%5Ctimes%20t)
![J= \dfrac{6.29 \times 10^{-3}}{0.1}\times 10](https://tex.z-dn.net/?f=J%3D%20%5Cdfrac%7B6.29%20%5Ctimes%2010%5E%7B-3%7D%7D%7B0.1%7D%5Ctimes%2010)
J = 0.629 Ns
g) Work done
W = Δ KE
![W = \dfrac{1}{2}I(\omega_f^2-\omega_i^2)](https://tex.z-dn.net/?f=W%20%3D%20%5Cdfrac%7B1%7D%7B2%7DI%28%5Comega_f%5E2-%5Comega_i%5E2%29)
![W = \dfrac{1}{2}\times 0.01\times (83.78^2-77.49^2)](https://tex.z-dn.net/?f=W%20%3D%20%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%200.01%5Ctimes%20%2883.78%5E2-77.49%5E2%29)
W = 5.07 J
Compared to the charge on a proton, the amount of charge on an electron is same and has the opposite sign
Answer: Biosensors are modern electronic devices which are made up of biological recognition system and a transducer, for processing of signals and to quantify a particular analyte.
Explanation:
In modern medicine, a Biosensors are used to replace some clinical laboratory investigations of biological fluids with the advantages of being easy to use, rapid and robust as well as offering multianalyte testing capability. They are classified based on their biological recognition elements which includes:
--> enzymatic biosensors
--> immuno biosensors
--> DNA and whole cell biosensors.
They can also be classified according to their signal transduction methods. These includes:
--> electrochemical Biosensors,
--> optical biosensors,
--> thermal and mass-based biosensors;
Some of the HEALTH APPLICATIONS of a modern biosensor includes:
--> Monitoring of glucose levels in diabetic patients which makes use of enzyme based sensors to monitor concentration of glucose in patients.
--> Detection of general metabolic status of bacteria, fungi, yeast, animal or plant cells.
--> Monitoring of cholesterol levels to prevent cardiovascular diseases. Cardiac troponin and. C - Reactive Proteins are biomarkers that are easily detected using biosensors.
--> They are used for Cancer clinical testings
The force decreases by the square of the increase in distance. That's 16 .