Answer:
1: Radiation 2: Convection 3: Conduction
Explanation:
Answer:
Time period of second planet will be 126.40 days
Explanation:
We have given radius of first planet
Orbital speed of first planet
Radius of second planet
We have to find orbital period of second planet
Period of orbital is equal to
From the relation we can see that
Time period of second planet will be 126.40 days
Answer:
C
Explanation:
Force is a vector quantity. So, it has magnitude and direction which can also be describe as strength and direction
Answer:
During start total turns
After half of the time total turns
Total number of turns during it stop
After half of the time total turns
Explanation:
Initially the machine is at rest and then starts rotating with speed 3550 rev/min
now we will have
now we know that it took 10 s to reach the speed
so angular acceleration is given as
now it stops in 31 s so the angular deceleration is given as
now initially number of turn to reach the given speed
number of turns during it stop
Now during startup speed after t = 5 s is given as
now during it stop the speed after half the time is given as
now the number of turns is given as