1) a .75 disk rolls down a 10m ramp. how many revolutions does it complete.
2) a uniform solid disk starts at 52 rad/s. to rest, it does 3900j of work. it has a radius of 1.2m. how long does it take to stop and how far does it go? (1/2mr^2)
3) a wheel is rotating at a constant rotational acceleration. what is true?
4) if you release a hoop, disk, and sphere at the same time from a ramp, what will have the greatest rotational acceleration.
5) 2 cylinders rotate counter clockwise are brought together. what is their rotational speed after? (one wheel has constants all of 1, the second one has constants all of 2)

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r