Energy was lost due to work done by the ball pushing on the floor during the collision.
Answer:
Option B
Explanation:
As per Newton's third law of motion, every action has an equal and opposite reaction. So if an object is made to drop from height to reach the floor, then its kinetic energy when the object is moving will be transferred to the floor on hitting the floor. Thus, this loss of kinetic energy will lead to rebounding of ball to 90% of original fixed height and not to the same height. So the point the ball hits the floor, the kinetic energy of the ball will be utilized to push on the the floor such that the ball can rebound itself. Hence, it is stated that the loss of kinetic energy of the ball during collision is because it is lost due to work done by the ball pushing on the floor during the collision.
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Answer:
Selected option: binary fission
Explanation:
Bacteria reproduce asexually, usually by binary fission, also known as bipartition. This process consists of a stem cell giving rise to two genetically identical cells, but smaller in size. First the circular bacterial DNA is duplicated with the help of DNA polymerase, and then a transverse wall is formed by internal growth of the plasma membrane and the cell wall. Some species of bacteria, after dividing, hold daughter cells together through membranes. This characteristic allows the formation of bacterial colonies, which greatly facilitate their identification, since each species that forms these groups does so in a special way: in a single one-dimensional row, in two dimensions, in clusters, etc. Binary fission happens very fast. Ideally, some bacteria divide at 20 minute intervals. At that rate, if there is no interference, a bacterium would give rise to more than a billion bacteria in 10 hours. However, bacteria cannot reproduce at this speed for long, because soon the lack of food or the accumulation of waste products would prevent it.
Answer:
Biology is the science that studies life, but what exactly is life? This may sound like a silly question with an obvious response, but it is not always easy to define life. For example, a branch of biology called virology studies viruses, which exhibit some of the characteristics of living entities but lack others.
