The law of gravity because the closer it is, the greater the Sun's gravitational pull is.
Answer:
D. A mass extinction may happen when a comet or asteroid impact starts a chain of events that blocks sunlight for weeks or even years.
Explanation:
Mass extinction: An event in the history of the Earth when a large portion of the living species become extinct. Mass extinction has happened a lot of times and every time life finds a way to come back, evolve and adapt to the new conditions.
The proofs of closest extinction can be found in the extinction of dinosaurs. Widely accepted reason behind this extinction is thought to be strike of a comet or an asteroid around 65 million years back. Because of this impact a chain of event started. A lot of dust and gases was filled in the atmosphere which blocked the sunlight to reach Earth for around 2-3 years.
Answer:i
Induced emf will be equal to 83.25 volt
Explanation:
We have given value of inductance L = 1.85 H
Initially the current flow is equal to 0.450 A
When switch is open current become 0 in 10 ms
So change in current di = 0.450-0=0.450 A
Time taken to change the current dt = 10 ms = 0.01 sec
Induced emf is equal to
So
Induced emf will be equal to 83.25 volt
In this problem, we apply the equation regarding kinematics expressed as vf^2 = v0^2 + 2as vf eventually becomes zero because the ball stops in the end. a = -9.8 m/s2s = 2 metres this time
This gives initial velocity, vo equal to 6.26m/s
now 6.26-(-8.85) = 15.11m/s
change in velocity/change in time = average acceleration 15.11/(12/1000) = 1259.167 m/s^2