The bacteria being a prokaryote have free-floating DNA in their cytoplasm as their control center.
DNA has been defined as the genetic material present in major organisms including prokaryotes and eukaryotes. It consists of hereditary information that is passed on from one generation to another.
The bacteria being a prokaryote has their genetic material (DNA) in a free-floating state in the cytoplasm rather than being constrained in a nuclear envelope, unlike the eukaryotes.
DNA acts as the control center for the bacteria as it codes for genetic information, metabolism, and development and regulates all cellular activities as well.
Therefore, DNA is the control center of the bacterial cells.
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apply.
A. Gravity exists only on Earth.
O
B. Gravity exists between two objects that have mass.
O
C. Gravity is a force that pulls two objects together.
D. Gravity exists in the whole universe.
E. Gravity doesn't exist between Earth and the sun.
1) Final angular velocity is 5.22 rad/s
2) Change in kinetic energy: 639.8 J
Explanation:
1)
In absence of external forces, the angular momentum of the merry-go-round must be conserved.
So we can write:
where
is the initial moment of inertia
is the final moment of inertia
is the initial angular velocity
is the final angular velocity
At the beginning, we have:
The moment of inertia is the sum of the moment of inertia of the cylinder + the moment of inertia of the man, therefore:
The man later walks to a point 1 m from the centre, so the final moment of inertia is:
Therefore, the final angular velocity is
2)
The angular velocity of the merry-go-round rotating is given by
In the first situation, we have
Therefore
In the second situation, we have
Therefore
So the change in kinetic energy is
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B. 3 g/L in weight
C. 15 m/s2
D. 10 km/hr eastward
Velocity of a moving body is its distance covered by time. Thus, it has the unit of m/s, km/hr. etc. . Therefore, among the given options, 25 m/s and 10 km/hr. are represents a velocity.
Velocity is a physical quantity having both direction and magnitude. Thus, it is a vector quantity and it measures the distance covered by an object per unit time.
Velocity is the ratio of distance to the time, hence its units are m/s, km/hr etc. The rate of change in velocity is called acceleration. Thus acceleration is change in velocity by change in time. Thus, its unit is m/s². Hence, 15 m/s² represents acceleration.
The quantity 3 g/L represents the mass per volume and hence it is density of a substance or can be the concentration of a solution. Thus, options A and D are correct.
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Answer:A
Explanation:
It’s A because the velocity is measured in m/s
The wave changes direction as it changes its speed. _______
The wave changes direction at an angle equal to the angle of incidence. ________
diffraction
reflection
refraction
PLEASE HELP!!
Answer:
Here is the answer.
Explanation:
The answers are:
1. Diffraction
2. Refraction
3. Reflection
Hope this helps!