PICTURE INCLUDED, DUE TONIGHT, NEED TO CONFIRM ANSWER A child of mass 50 kg swings down in a circular arc on a rope that is 2 m long. At the bottom

of the swing, she has a tangential speed of 8 m/s. The net centripetal force on the child at the

bottom of the swing is most nearly

(A) 1600 N (B) 800 N (C) 320 N (D) 200 N

2. For the same child as the previous problem, at the instant that she is at the bottom of the swing,
the direction of the centripetal force will be
(A) up. (B) down. (C) right. (D) left.

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above

Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281