An object is traveling around a circle with a radius of 5 centimeters. If in 20 seconds a central angle of ~ radian is swept out, what is the angular speed of the object? what is its linear speed?.

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air