Thursday

January 29, 2015

January 29, 2015

Posted by **Carlie** on Sunday, April 26, 2009 at 3:44pm.

Suppose a pulsar of mass 1.5x10^30 kg and radius 20km is spinning at the rate of 2.1 rev/s and is slowing down at the rate of 1x10^-15 rev/s.

A) What is the rate in J/s at which the rotational energy is decreasing?

B) If the rate of decrease is constant, what how long will it take the pulsar to come to a stop?

**Answer this Question**

**Related Questions**

Physics - An ice skater spins with her arms extended and then pulls her arms in...

physics - A car has a flywheel ( a diks of R=0.2m and uniformly distributed mass...

Physics - A rolling barrel with initial velocity 20 m/s encounters a hill 10m ...

physics-energy conservation - when you apply the brakes of a car its kinetic ...

Physics - A computer and monitor use 800J of electric energy each second. The ...

college physics - In the figure below, two particles, each with mass m = 0.82 kg...

physics - A mass of 0.246 kg is converted completely into energy of other forms...

phys - A disk rolls down a slope. It rotational axis is its center of mass. It ...

physics - At the top of a hill, a roller coaster has 67,500 J of kinetic energy ...

Physics - When a positive charge moves in the direction of the electric field, ...