102MCATPhysicsAnswers

0 cm the diameter of the larger piston d is 40 cm

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 250 N d. 25000N 60. A hydrolic lift is shown in figure 4. if the diameter of the smaller piston (d) is 4.0 cm. The diameter of the larger piston (D) is 40 cm. What force must be applied to the small piston in order to lift a 255 kg box? a. 2.5 N b. 25 N c. 250 N d. 2500 N Page 9 of 15 ©Prep101 61. What is the ratio of the diameter of the larger piston to the smaller piston if a 5 N force allows us to support a 125N load a. 1:1 b. 2:1 c. 5:1 d. 10:1 65. Which of the four choices in the figure shows the proper fluid heights if the fluid is flowing from left to right? 62. The magnitude of the buoyant force on a body is proportional to a. The density of the body b. The mass of the body c. The volume of the fluid d. The density of the medium surrounding the body 66. Downtown London has become a more popular residential area, and as a result, the water pressure on the 5th floor of a 10 story older apartment building is lower than is comfortable to take a shower. The following strategies are being considered by a student to fix this problem. I) Move to the 1st floor II) Move to the 10th floor III) Expand the width of the shower head IV) Narrow the width of the shower head Which of the strategies will work? 63. If I double the density of a fluid the buoyant force on a piece of would will: a. Increase 4 fold b. Double c. Remain unchanged d. Become ½ of what it was before a. b. c. d. a. b. c. d. Questions 64-65 refer to the figure below 4— 3— 2— 1— 4— 3— 2— 1— 4— 3— 2— 1— 4— 3— 2— 1— B A 4— 3— 2— 1— 4— 3— 2— 1— 4— 3— 2— 1— 4— 3— 2— 1— 4— 3— 2— 1— C 4— 3— 2— 1— 4— 3— 2— 1— 4— 3— 2— 1— A B C D I and III I and IV II and III II and IV 67. A blood vessel of radius r splits into two smaller vessels, each with a radius of r/4. If the average speed of the blood in the large vessel is vl, what is the average speed of the blood in each of the smaller vessels vs. a. vs = 8 × v1 b. vs = 4 × v1 c. vs = v1 a. vs = vl/4 D A cylindr...
View Full Document

This note was uploaded on 03/23/2011 for the course CHEM 100 taught by Professor Vallis during the Spring '11 term at Dalhousie.

Ask a homework question - tutors are online