An athlete whirls a 7.00 kg hammer 1.8 m from the axis of rotation in a horizontal circle, as shown in the figure below. The hammer makes one revolution in 1.0 s. What is the tension in
the chain?

A-500 N
B-50 N
C-5000 N
D-5 N

Which of the following statements is true about women and minorities in early psychology? a. in the early 20th century, numerous graduate schools recruited women and minorities to study psychology. b. opportunities in higher education were limited for women and minorities in the early 20th century due to discrimination. c. despite some obstacles, there were numerous employment opportunities for women and minorities. d. women and minorities were often selected to do academic research in an effort to make the field more diverse.

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o