OMG! That’s horrible. The answer is C though, inbreeding is when two genetically related organisms smash and create offspring. Often times it can result in genetic defects.
Answer: 1. A Unbalanced force and net force
Explanation:
The combination of all forces acting on a object is called a Net Force, and a Unbalanced force can cause an object to stop, start moving or change direction.
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Answer:
Acceleration=115m/s²
Explanation:
speed=distance/time
23=120/time
/120 on both sides
0.2s is time
acceleration= change in velocity/time taken
23/0.2=115
acceleration=115m/s²
Answer:
The new angular speed of both disks when they are rotating together is 2.311 revolutions per second.
Explanation:
This situation can be analyzed by the Principle of Conservation of Angular Momentum since there are no external forces and moments being exerted on the system, whose definition is presented below:
(1)
Where:
, - Initial and final angular speeds, measured in revolutions per second.
- Initial and final moments of inertia, measured in kilograms per square meter.
The initial and final moments of inertia of the system are, respectively:
(2)
(3)
By applying (2) and (3) in (1), we obtain the following expression:
(4)
If we know that , then the new angular speed of both disks when they are rotating together is:
The new angular speed of both disks when they are rotating together is 2.311 revolutions per second.