The tangential acceleration of a cart moving at a constant speed in a horizontal circle is
(1) 0.0 m/s2
(2) 9.8 m/s2 in the direction of the velocity
(3) constant in magnitude and directed radially
toward the center of curvature
(4) constant in magnitude and directed radially
away from the center of curvature

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

b.transmitters send radio waves, and receivers capture radio waves.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000