How much time does it take a power drill accelerating at 64.3 rad/s2 to achieve
1500. rotations per minute (rpm)?

Answer;

= 0.244 seconds

Explanation;

500 rpm is equivalent to; 1500 × 2π radians per minute

   = 9424.8 rad/minute  

To get revolutions per second we divide by 60

  = 9424.8/60  

   = 157.08 radians per second.  

Then we divide by 64.3 rad/s^2 to get time;

    = 157.08/64.3

     = 0.244 seconds.

The time is 0.244 seconds

According to the given data

1500 rpm is 1500 * (2pi) radians per minute = 9424.8 rad/minute  

So

Divide by 60 = 157.08 radians per second.  

And then

Divide by 64.3 rad/s^2 = 0.244 seconds.  

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

so easy. just google the electromagnetic waves and it’ll pop up.