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Question 1 of 50
1. Question
A mass of air has a pressure of 9.0 psi and a volume of 45 ft.3. If the air is compressed to a new volume of 30 ft.3, what is the new pressure?
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Question 2 of 50
2. Question
If A = 2 ft. and the green box weighs 40 lbs. what is the torque acting on the A side of this lever?
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Question 3 of 50
3. Question
What is the first step to solving a problem where multiple forces are acting on an object?
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Question 4 of 50
4. Question
Hydraulics is the transmission of force through the use of which of the following?
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Question 5 of 50
5. Question
Which of the following is not a modulus of elasticity?
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Question 6 of 50
6. Question
Boyle’s law defines the relationship between pressure and volume as:
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Question 7 of 50
7. Question
If the green box weighs 70 lbs. and is 3 ft. from the fulcrum, how much force would need to be applied at the blue arrow to balance the lever if the arrow’s distance from the fulcrum is 7 ft.?
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Question 8 of 50
8. Question
If the handles of a wheelbarrow are 0.5 ft. from the wheel axle, how many pounds of force must you exert to lift the handles if it’s carrying a 220 lbs. load concentrated at a point 0.5 ft. from the axle?
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Question 9 of 50
9. Question
The science that deals with motion and the forces that produce motion is called which of the following?
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Question 10 of 50
10. Question
A box is resting on a smooth floor. Static friction is present:
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Question 11 of 50
11. Question
If the radius of the axle is 5 and the radius of the wheel is 10, what is the mechanical advantage of this wheel and axle configuration?
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Question 12 of 50
12. Question
Friction between two or more solid objects that are not moving relative to each other is called:
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Question 13 of 50
13. Question
If the green box weighs 55 lbs. and is 5 ft. from the fulcrum, how much weight would need to be placed at the blue arrow to balance the lever if the arrow’s distance from the fulcrum is 2 ft.?
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Question 14 of 50
14. Question
Which of the following will increase the mechanical advantage of this inclined plane?
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Question 15 of 50
15. Question
A box is resting on a smooth floor. Static friction is present:
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Question 16 of 50
16. Question
Tension is a force that does which of the following?
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Question 17 of 50
17. Question
Two gears are connected and the larger gear drives the smaller gear. The speed of rotation will __________ and the torque will __________.
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Question 18 of 50
18. Question
The advantage of using a third-class lever is that it increases:
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Question 19 of 50
19. Question
Potential energy is energy that has the potential to be converted into what?
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Question 20 of 50
20. Question
If a 50 lbs. weight is placed 7 ft. from the fulcrum at the blue arrow and the green box is 8 ft. from the fulcrum, how much would the green box have to weigh to balance the lever?
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Question 21 of 50
21. Question
A mass of air has a pressure of 12.0 psi and a volume of 60 ft.3. If the air is compressed to a new volume of 35 ft.3, what is the new pressure?
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Question 22 of 50
22. Question
Drag is a type of:
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Question 23 of 50
23. Question
The mechanical advantage of a third class lever is always:
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Question 24 of 50
24. Question
Which of these is the formula for force?
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Question 25 of 50
25. Question
The mechanical advantage of a wheel and axle is equal to the:
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Question 26 of 50
26. Question
A ramp is an example of which kind of simple machine?
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Question 27 of 50
27. Question
The standard unit of energy is the:
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Question 28 of 50
28. Question
Which of these is the formula for kinetic energy?
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Question 29 of 50
29. Question
A screw is most like which of the following other simple machines?
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Question 30 of 50
30. Question
What type of load doesn’t create specific stress points or vary with time?
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Question 31 of 50
31. Question
Which of the following is not a type of bridge?
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Question 32 of 50
32. Question
When it comes to force, mass and acceleration have what kind of relationship?
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Question 33 of 50
33. Question
What’s the first gear in a gear train called?
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Question 34 of 50
34. Question
Normal force is generally equal to the __________ of an object.
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Question 35 of 50
35. Question
The work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle. This defines which of the following?
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Question 36 of 50
36. Question
Which of the following is not a characteristic of a ceramic?
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Question 37 of 50
37. Question
A 370 lb. barrel is rolled up a 13 ft. ramp to a platform that’s 4 ft. tall. What effort is required to move the barrel?
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Question 38 of 50
38. Question
The work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle. This defines which of the following?
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Question 39 of 50
39. Question
If the handles of a wheelbarrow are 3 ft. from the wheel axle, what force must you exert to lift the handles if it’s carrying a 270 lb. load concentrated at a point 0.5 ft. from the axle?
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Question 40 of 50
40. Question
The force amplification achieved by using a tool, mechanical device or machine system is called:
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Question 41 of 50
41. Question
What is the efficiency of a machine has work input of 65 ft⋅lb and work output of 58 ft⋅lb?
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Question 42 of 50
42. Question
The force required to initally get an object moving is __________ the force required to keep it moving.
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Question 43 of 50
43. Question
The mechanical advantage of a block and tackle is equal to which of the following?
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Question 44 of 50
44. Question
According to Boyle’s law, for a fixed amount of gas kept at a fixed temperature, which of the following are inversely proportional?
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Question 45 of 50
45. Question
Friction between two or more solid objects that are not moving relative to each other is called:
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Question 46 of 50
46. Question
If the green box weighs 55 lbs. and 25 lbs. of force is applied 5 ft. from the fulcrum at the blue arrow, how far from the fulcrum would the green box need to be placed to balance the lever?
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Question 47 of 50
47. Question
A 370 lb. barrel is rolled up a 11 ft. ramp to a platform that’s 1 ft. tall. What effort is required to move the barrel?
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Question 48 of 50
48. Question
Collinear forces:
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Question 49 of 50
49. Question
An object’s resistance to changes in direction is known as:
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Question 50 of 50
50. Question
According to Boyle’s law, for a fixed amount of gas kept at a fixed temperature, which of the following are inversely proportional?
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