Answer:
The possibility of Adenine=40% and Thymine=60% is only in single stranded DNA molecule. In the question, the DNA sample referred is a single stranded DNA. If guanine=10% as guanine will always pair with cytosine, i.e.cytosine is also 10% then adenine and thymine accounts 80% as adenine will always pair with thymine.
What do they do? well they do....Science!!!
Answer: c. they will hit the ground at the same time
Explanation:
The volume of both objects is almost the same, so the force of friction will be the same in each one, so we can discard it.
Now, when yo drop an object, the acceleration of the object is always g = 9.8m/s^2 downwards, independent of the mass of the object.
So if you drop two objects with the same volume but different mass, because the acceleration is the same for both of them, they will hit the ground at the same time, this means that the density of the object has no impact in how much time the object needs to reach the floor.
So the correct option is c
The correct answer of this question is : Artificial luminous sources.
EXPLANATION :
As per the question, we are given some light sources like halogen, laser, sodium-vapor etc.
There are two types of bodies which are known as luminous and non luminous depending on their production of light.
All these sources given in the question are luminous sources as they have their own light. Most importantly they are not natural luminous sources like stars, firefly etc.
All these sources are artificial.
Hence, the correct answer of this question is artificial luminous sources.
Answer:
- the iron + boat system displaces more volume than the iron alone
- the system is the iron alone, it displaces the same volume in the boat and the water
Explanation:
The Archimedes principle states that the thrust is equal to the weight of the dislodged liquid.
B = ρ g V
Let us analyze this case the weight of the iron is the same either in the boat or at the bottom of the sea, but the volume that moves from water is greater when it is in the boat, it is already the area of the boat that moves the water, whereby the iron and the boat does not sink.
When the iron is on the surface of the water in displaced volume it is in the iron (V_Iron << V_boat), so in the relation
B- W = m a
The weight of the iron is greater than the thrust and it sinks
two posibilities
Therefore, the iron + boat system displaces more volume than the iron alone
If the system is the iron alone, it displaces the same volume in the boat and the water