A board of mass M = 2.0 kg serves as a seesaw for two children. Child
A has a mass of 30 kg and sits 2.5 m from the pivot point, P (his center
of gravity is 2.5 m from the pivot). At what distance x from the pivot
must child B, of mass 25 kg, place herself to balance the seesaw?
Assume the board is uniform and centered over the pivot.

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.

How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.