64
In which of the following states is MAXIMUM pressure exerted on a person
- A. Standing on two feet
- B. Standing on one foot
- C. Lying on the floor
- D. Kneeling on the floor
65
The magnitude of the acceleration of a moving object is equal to the
- A. gradient of a displacement-time graph
- B. gradient of a velocity-time graph
- C. area below a force-time graph
- D. area below a velocity-time graph
66
The vacuum and silvered wall surfaces of a vacuum flask walls are respectively
- A. minimize conduction and convection and prevent radiation
- B. prevent conduction and convection and minimize radiation
- C. prevent conduction and minimize convection and radiation
- D. minimize convection and prevent conduction and radiation