Which element in row 6 of the periodic table (shown below) has the largest radius?

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?