1:041 Reset + Done BACK 3.1 Practice Problems GROUP 2 Q2 Anchor Group . 2 questions An iron anchor of density 7870 kilograms per cubic meter appears 200-netwons lighter in water than in air. QUESTION 2.1 What is the volume of the anchor? Choose one . 5 points O 200m 3 O 7.8m 3 O 0.02m 3 O 1.8m 3 SUBMIT TEST + 89 . . .1:04 4 Reset Done S. T Practice Problems QUESTION 3.1 If the time between the flashes is 0.20 seconds, where does the dot appear at f1? Choose one . 3 points 12:00 (up) 3:00(right) 6:00 (down) 9:00 (left ) QUESTION 3.2 If the time between the flashes is 0.20 seconds, where does the dot appear at f2? Choose one . 2 points 12:00( up) ( 3:00 (right) 6:00 (down) 9:00(left ) SUBMIT TEST1:031 O Reset Done S. T Practice Problems GROUP 1 Q1 Floating boat Group . 2 questions This assignment is very important to prepare you for the assessment at the end of the week. You will want to work on these problems as you go over the material for the week. It is not something you can complete correctly in a couple hours without a strong physics background. 1. Start by attempting to solve each of the questions, and keep your work! Submit the assignment. 2. After submitting, the correct answers and hints will be immediately visible to you. Go back and rework all of the questions you got wrong using the hints and correct answers to help. 3. If you are completely stuck you can look up the full solution in the provided solutions document but only do this as a last resort. 4. Submit pictures/scans/PDFs of each of the problems you missed, correctly worked out, in that week's test to earn back the points for that question and raise your practice problem assignment grade! Q1 A boat floating in fresh water displaces water weighing 35,000 newtons. SUBMIT TESTQUESTION 1.1 What is the weight of the water this boat displaces when floating in salt water of density 1 .1 0 x103 kilograms per cubic meter? Choose one - 5 points QUESTION 1.2 What is the difference between the volume of fresh water displaced and the volume of salt water displaced? Choose one - 5 points 0 0m3 0 1000m3 O 0.1m3 0 0.32m3 1:041 O Reset Done S. T Practice Problems QUESTION 2.2 How much does the anchor weigh in air? Choose one . 5 points O 7870N O 157.4N O 77126N O 1500N GROUP 3 Q3 Strobe light on a disk Group . 4 questions A disk that rotates clockwise at angular speed 10pi radians per second is illuminated by only a flashing stroboscopic light. The flashes reveal a small black dot on the rim of the disk. In the initial flash, the dot appears at the 12:00 position (as on an analog clock face). Call the next five flashes f1, f2, and so on. QUESTION 3.1 SUBMIT TEST