Answer:
C. A Covalent Bond
Explanation:
two covalent bond form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell
The velocity and acceleration of the skydiver will increase as she falls to the ground. According to Newton’s Law of gravity.
Answer:Same
Explanation:
Gravitational Potential energy is the function of height i.e. it is proportional to the height gained by an object or in other words work done against gravity is also gravitational Potential energy
For the same mass, if both attained the same height then gravitational Potential energy of both the friends is equal as it does not depend upon the path taken by the person.
The shape of a river's stream bed affects the speed and eroding power of a river by influencing the amount of friction between the water flowing through the river and the stream bed below. Friction is the force that opposes the motion of one surface as it moves across another surface. In a river, there is friction between the flowing water and the stream bed beneath it. Where a river is deep, less water comes into contact with the stream bed, so there is less friction. The reduced friction means there is less opposition to the water's motion, so the river flows at a greater speed and has more kinetic energy for erosion. On the other hand, where a river is shallow, more water comes into contact with the stream bed, so there is more friction. The increased friction means there is more opposition to the water's motion, so the river flows at a lesser speed and has less kinetic energy for erosion. Also, the roughness of a stream bed covered with boulders and other obstacles causes the water to flow through the river in a turbulent fashion. This could cause the river to move slower in some cases or erode more in other cases.
The name of the equipment that John Thomson did the experiments was cathode ray tube.
Explanation:
- John Thomson's experiments was to study the nature of electric discharges in a cathode ray tube. They are sealed glass tubes and the inside of the tube was maintained in high vacuum.
- John Thomson's cathode ray tube experiments were significant because he proved that all the atoms contain, electrons. Electrons are the negatively charged subatomic particles.
- Cathode ray is the particle beam that contains this negatively charged electrons.