PHY 250 Graded Midterm Exam (Straighterline)

A rectangular tile hangs freely from one of its corners, as shown. The distribution of mass in the tile is not uniform. In each of the following diagrams, a cross is marked on the tile. In which diagram could the cross represent the tile’s center of mass? Select one: a. b. c. d. Live Chat (877) 787-8375 Courses College Credit Credit Transfer My Line Help Center My Account 0 Graded Midterm Exam 9/5/23, 8:58 PM Question 2 Correct 5.00 points out of 5.00 Question 3 Correct 5.00 points out of 5.00 Question 4 Correct 5.00 points out of 5.00 Question 5 Correct 5.00 points out of 5.00 A child is guiding a toy airplane attached to a guide wire around in a circle. The plane circles with a period T. If the child pulls in the guide wire to half the original radius, while simultaneously adjusting the speed so that the period T remains constant, how has the centripetal acceleration changed? Select one: a. The acceleration decreases by 2. b. The acceleration decreases by 4. c. The acceleration increases by 2. d. The acceleration increases by 4. Which is the standard unit of time in the metric system? Select one: a. minute b. second c. year d. hour Which is not a basic unit? Select one: a. mass b. velocity c. length d. time A woman drives 2 blocks north, stops, continues on for another 4.5 blocks, and then makes a U-turn and drives south 3.25 blocks. After stopping momentarily she drives 5.75 blocks north. Which of the following is the magnitude of the woman’s displacement and distance traveled? Select one: a. Displacement: 15.5 blocks Distance: 15.5 blocks b. Displacement: 15.5 blocks Distance: 9 blocks c. Displacement: 9 blocks Distance: 15.5 blocks d. Displacement: 9 blocks Distance: 9 blocks