Adentist's drill starts from rest. after 3.00 s of constant angular acceleration it turns at a rate of 2.90 ✕ 10^4 rev/min. (a) find the drill's angular acceleration. (b) determine the angle (in radians) through which the drill rotates during this period.

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

Abus travels 280km south along a straight path with an average velocity of 88km/h to the south. the bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last?