The unit for measuring the rate at which light is radiated from a source is B, Lumen. Lumenous flux is the time rate of the flow of light, or the visible energy produced from a certain light source. It is the quantitative measure of brilliance of a light source. The unit we use for this is lumen.
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
Answer:
1) ironing a shirt 2) writing on surfaces 3) working of an eraser
Answer:
a)
b) Option ii. The angular acceleration would increase
Explanation:
a) The angular acceleration is given by:
Where:
: is the final angular speed = v/r
v: is the tangential speed = 6.35 m/s
r: is the radius = 45.0 cm = 0.45 m
: is the initial angular speed = 0 (the hoop starts from rest)
t: is the time = 11.0 s
α: is the angular acceleration
Hence, the angular acceleration is:
b) If the radius were smaller, the angular acceleration would increase since we can see in the equation that the radius is in the denominator ().
Therefore, the correct option is ii. The angular acceleration would increase.
I hope it helps you!
Explanation:
We have,
Mass of a car is 1285.0 kg
Initial speed of a car is 25 m/s in an easterly direction
Mass of a truck is 600 kg
Initial speed of a truck is 20 m/s
After the collision, final velocity of the car is 18 m/s
(A) Let is the velocity of velocity of the truck right after the collision. Using conservation of linear momentum. So,
(B) Initial kinetic energy of truck car system :
(C) Final kinetic energy of truck car system :
So, the change in kinetic energy is :
(C) The change in mechanical energy occurs when the energy gets converted in the form of heat and sound energy.