Physics Practice: Force and Pressure (Mock Test 5 - Ultimate Comprehensive)
1. When a person swims, they push the water backwards. The water, in turn, pushes the person forward. This is an example of:
2. Pressure in a liquid depends on which of the following factors?
3. Why do the tires of heavy trucks often have 10 to 12 wheels?
4. The "Upthrust" exerted by a fluid on an object is always in the:
5. Which of the following is NOT a characteristic of non-contact forces?
6. A hydraulic press works on the principle of:
7. To reduce friction in the moving parts of a machine, we use:
8. Atmospheric pressure ________ as we go higher above sea level.
9. Force can change the ________ of a moving object.
10. A body will sink in a liquid if its weight is ________ the upthrust exerted by the liquid.
11. Magnetic force between two unlike poles is ________ and between two like poles is ________.
12. The Sl unit of Weight is:
13. In a Torricellian barometer, the space above the mercury column is a:
14. If a force is applied perpendicular to the surface of an object, it is called:
15. Why does a person's nose bleed at very high altitudes?
16. The area of contact between a car's tires and the road is increased to:
17. Static friction is always ________ than kinetic (sliding) friction.
18. The "turning effect" of a force increases if we ________ the distance from the pivot.
19. Which of the following is a unit of Force?
20. Upthrust acts at the ________ of the displaced liquid.