Answer:
D. The sum total of all matter and energy
Explanation:
The universe is defined as a closed system that contains all forms of energy and matter. Therefore, includes the so-called dark matter and dark energy, which make up most of the universe, since ordinary matter would only represent just over 5% of the total.
The increased thickness of the fox's fur allows the fox to warmer in cold temperatures, while the shorter fur does the opposite.
Answer:
R=2.5 ohm
Explanation:
Given that :
Voltage difference = 9 V
Current ,I= 3.6 A
As we know that from Ohm's law
V= I R
V =Voltage difference
I=Current
R=Resistance of the wire
Now by putting the values in the above equation we get
9 = 3.6 R
R=2.5 ohm
Therefore the resistance of the wire will be 2.5 ohm.
Answer: -0.5 D
Explanation:
The resultant power can be defined as the sum of powers of all the lenses placed in contact together.
P =P₁ + P₂ + P₃ +....
It is given that power of the concave lens is, P₁ = -2 D
Power of the convex lens is, P₂ = +1.5 D
Thus, the resultant power when these two lenses are placed in contact with each other are: P = P₁ + P₂ = -2 D + 1.5 D = -0.5 D.
Answer:
A controlled variable does not change during a experiment
Explanation:
it's c
