Which of the following must be true about an object for it to be in uniform circular motion? a. it must have zero centripetal acceleration. b, it must have increasing centripetal acceleration. c. it must be moving at a constant speed. d. it must be moving with a constant velocity.

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90