Question

A 12-L volume of oil is subjected to pressure which produces a volume strain of-30 104 The bulk modulus of the olil 9 Pa and is independent of the pressure. The change in the pressure of the oil in megapascals is closest to O 1.2 MPa O 1.4 MPa e 1.6 MP O 1.8 MPa 曲2.0 MPa QUESTION 5 A 120-kg refrigerator that is 2.0 m tall and 85 cm wide has its center of mass at its geometrical center. You are attempting to slide it along the floor by pushing horizontally on the side of the refrigerator. The coefficient of static friction between the floor and the refrigerator is 0.30. Depending on where you push, the refrigerator may start to tip over before it starts to slide along the floor. What is the highest distance above the floor that you can push the refrigerator so that it will not tip before it begins to slide? 0.71 m 1.0 m 1.2 m 1.4 m 1.6 m QUESTION 6 A 1200-kg car is being raised at a constant speed if 25 cm/s by a crane using a 20-m long steel cable that is 1 5 cm in diameter Young's modulus for steel is 2.0 10 11 Pa What is the change in length of the cable caused by the car? 6 7 mm 6 7 cm 3.3 cm 3.3 m

Answer 1

mg times 0.85/2 N mg times n n = 0.85/0.3 times 2 Therefore n = 1.4 m