Answer:
In first case angular displacement will be 11.55 radian
In second case it will be 4 times the previous case
Explanation:
We have given that machine rotates at an angular velocity of 0.07 rad/sec
So initial angular velocity
And its speed is increases to 3.4 rad/sec
So final angular velocity is
Angular acceleration
According to third equation of motion we know that
Now initial angular velocity and final angular velocity both are doubled but angular acceleration is constant
So
And
So
So angular displacement will be 4 times the earlier displacement
Answer: Magnitude of the average force exerted on the glove by the other boxer is 827.86 N (approximately 828 N).
Explanation: Impulse is defined as the force acting on an object for a short period or interval of time.
Mathematically it is given by the relation:
Impulse = Force Time
According to the numerical values given in the question, I = 202 Ns and T = 0.244 s
So, Force F = = = 827.86 N
Magnitude of the average force exerted on the glove by the other boxer is 827.86 N (approximately 828 N).
C. hydrogen accreted onto a white dwarf from a close companion rapidly fuses to helium, releasing a large amount of energy.
The accreted material, composed mainly of hydrogen, is compacted on the surface of the white dwarf due to the intense gravitational force on that place. As material accumulates, The white dwarf becomes increasingly hot, until it reaches the critical temperature for ignition of nuclear fusion.