Answer:
For other liquids, solidification when the temperature drops includes the lowering of kinetic energy, which allows molecules to pack more tightly and makes the solid denser than its liquid form. Because ice is less dense than water, it is able to float at the surface of water.
Explanation:
have a great day:)
Answer:
3.962
Explanation:
mass = 1.2
gravity g = 9.81
velocity = ?
mgh = 1/2mv² + 1/2(1/2)mv²
= 9.81 x 1.2 = 3/4v²
11.772 x 4 = 3/4v²
47.088 = 3v²
divide through both sides by 3
15.696 = v²
take the square root of both sides
√15.696 = √v²
= 3.6962 = v
the speed is therefore 3.692
Answer: The ball's acceleration is 2.35 m/s2
Explanation: Please see the attachment below
Answer:
nebulas and they are the cool clouds in which stars form
Explanation:
The stars are born by chance. Fragments of matter are gathered from the cool clouds of gas and dust that float in space, the so-called nebulas. These particles are added by gravitational attraction to form a large mass.
This conglomerate, due to the effect of gravity, contracts on itself and as a consequence increases in its center, density, pressure and heat. In this way, atoms move faster and collide with each other. Under these conditions, nuclear fusion reactions soon begin. When they start the star is born.
Answer:
Proof:
|----------(R1)-------------(R2)---------|
Let the resistances be R1 , R2 connected in series. And the potential difference be V ;
We know that :
P1 = V²/R1 ..........(1) and
P2 = V²/R2 ...........(2)
In series combination , the net resistance is the algebraic addition of individual resistance :
R = R1 + R2
=> V²/P = V²/P1 + V²/P2
=> 1/P = 1/P1 + 1/P2
Explanation:
Copied it from a different brainly question that is this question. Please try to find it on brainly instead of asking it'd make it much easier.
