The propeller of a world war ii fighter plane is 2.30 m in diameter. (a) what is its angular velocity in radians per second if it spins at 1200 rev/min? (b) what is the linear speed of its tip at this angular velocity if the plane is stationary on the tarmac? (c) what is the centripetal acceleration of the propeller tip under these conditions? calculate it in meters per second squared and convert to multiples of g .

Answer with Explanation:

We are given that

Diameter of fighter plane=2.3 m

Radius=

a.We have to find the angular velocity in radians per second if it spins=1200 rev/min

Frequency=

1 minute=60 seconds

Angular velocity=

Angular velocity=

b.We have to find the linear speed of its tip at this  angular velocity if the plane is stationary on the tarmac.

c.Centripetal acceleration=

Centripetal acceleration==

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.