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

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

What is the role of lenses in microscopy?

What is friction? how does it affect the motion of an object?