If a particle is confined to move on a spherical surface of radius a, 7 to denote its position vector, then show that the projection ormal ê, is always (a) (5 poi and we use of the acceleration d2r/dt2 along the instantaneous surface - (dr/dt)/a. ) suppose the particle is executing a uniform circular motion along a latitude on the surface of our (spherical) earth of radius a. its speed is u. what itude and direction of its instantaneous centripetal acceleration? (c) (2 points) show that parts (a) and (b) are self-consistent.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it