Speed is scalar quantity that is defined only by its magnitude and is represented with one value.
Velocity on the other side is a vector quantity that is defined with its magnitude and direction. The speedometer measures and displays the speed of the vehicle.
Where the needle points on the speedometer that is the speed of the vehicle.
The velocity is not explicitly shown, but if f the needle is moving<span>, you can get a rough idea of acceleration. If the needle is going clockwise the vehicle is accelerating.</span>
Answer:
The cloud moves 9050 meters to the east in 12.5 minutes.
Explanation:
Let suppose that mass of the cloud is negligible. meaning that effects of gravity are negligible and that altitude of the cloud remains constant. If the cloud drifts at constant velocity, travelled distance is defined by following formula:
(1)
Where:
- Velocity, in meters per second.
- Time, in seconds.
If we know that and , then the travelled distance after 12.5 minutes is:
The cloud moves 9050 meters to the east in 12.5 minutes.
Answer:
The intrinsic carrier density of diamond is .
Explanation:
Given that,
Energy band gape = 5.4 eV
Temperature = 300 K
We need to calculate the intrinsic carrier density of diamond
Using formula of density
....(I)
We need to calculate
Put the value into the formula
We need to calculate
So.
Now, Put the value of and in equation (I)
Hence, The intrinsic carrier density of diamond is .
Answer:
a
The thickness is
b
The thickness is
Explanation:
From the question we are told that
The wavelength of the laser light is
The refractive index of the plastic rod is
The refractive index of the transparent coating is
For maximum transmission of light into the rod the reflection would be minimum and this minimum reflection is mathematically represented as
Where m is the order of interference which is equal to 1
t is the thickness
Substituting values
For minimum transmission of light into the rod the reflection would be maximum and this maximum reflection is mathematically represented as
Where m = 0 this because the transmission of light is minimum
Substituting values
Answer:
TATTCATTCATTA—TGATTT—ATTCG
Explanation:
A mutation is a permanent change in the nucleotide sequence of DNA. A mutation occurs during replication or recombination. It may be due to base substitutions, deletions and insertions. As per the question, DNA segment forms encodes for the enzyme pepsin is CATTGTTA.
Option TATTCATTCATTA—TGATTT—ATTCG is the correct answer. In the DNA segment which encodes pepsin, a purine base (G) guanine is replaced by another purine (A) adenine. This type of mutation is called a transition type point mutation.
Due to base substitution, the mutated segment CATTCATTA will nor encode pepsin.