Answer:
(c) in the barrel of the rifle
Explanation:
When we are moving in a convertible with constant speed so as per inertia all the objects are moving with same speed as that the speed of convertible.
So here we can say that bullet when shot from the rifle then its speed is same as that of convertible in horizontal direction
So here we can say that if air friction is absent then bullet will move same horizontal distance as the distance moved by you in the convertible
so after it it will reach again at the same position then the displacement of you and bullet is same in horizontal direction so we can say that correct answer will be
(c) in the barrel of the rifle
To solve this problem we will apply the concepts related to the conservation of momentum. Momentum can be defined as the product between mass and velocity. We will depart to facilitate the understanding of the demonstration, considering the initial and final momentum separately, but for conservation, they will be later matched. Thus we will obtain the value of the mass. Our values will be defined as
Initial momentum will be
After collision
Final momentum
From conservation of momentum
Replacing,
Cube A has more thermal energy than cube B.
Explanation:
It is obvious that cube A has gained more thermal energy compared to cube B.
From the description of the experiment, both cubes had the same temperature which is 50°C. Temperature is the degree of hotness or coldness of a body.
Thermal energy is a form of energy expressed as heat in a body.
Cube A has a higher volume because it has gained more thermal energy than Cube B.
Thermal energy increases the rate of vibration of atoms in the crystal lattice of the solid. The more the thermal energy, the more the vibration. This is why Cube A has expanded so much and changed volume.
Learn more:
Temperature and heat brainly.com/question/914750
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Noting cloudiness occurs when two solutions are mixed.
