Books are knowledge (), power (), wisdom (), life (). A steering wheel B source c ocean D wings Books are the ocean of knowledge, the wings of strength, the source of wisdom and the steering wheel of life

RELATED INFORMATIONS

• 1. What is the difference between the component force of a force along two axes and the projection of the force on the axis? Do they have to be the same size?
• 2. When a force is parallel to a coordinate axis, the projection of the force on that axis is equal to the magnitude of the force yes? wrong?
• 3. The difference between the two concepts of force projection and force component
• 4. What is the difference and connection between the projection of force on the rectangular coordinate axis and the component of force along the rectangular coordinate
• 5. In order to solve the problem conveniently, the direction of coordinate axis of projection balance equation of force should be determined according to () direction. A. horizontal B. vertical C. arbitrary D. parallel to most unknown forces
• 6. Are the projections of the same force on two parallel axes equal? Are the projections of the same force on two parallel axes equal? If the projections of two forces on the same coordinate axis are equal, are the two forces necessarily equal? Seeking reasons
• 7. The 180 n vertical downward force is divided into two components, one is equal to 240 n in the horizontal direction, and the size and direction of the other component are calculated
• 8. In this paper, the 180n vertical downward force is divided into two components, one is equal to 240n in the horizontal direction, and the size of the other component is calculated The 180n vertical downward force is decomposed into two components, one is equal to 240n in the horizontal direction, and the size and direction of the other component are calculated?
• 9. The 180 n vertical downward force is divided into two components, one is equal to 240 n in the horizontal direction, and the size and direction of the other component are calculated
• 10. The 180 n vertical downward force is divided into two components, one is equal to 240 n in the horizontal direction, and the size and direction of the other component are calculated
• 11. What is the formula of C = a × B in life? For example: distance = speed × time, please write it out, the more the better
• 12. If events a, B and C satisfy a + C = B + C, is a = B true? Give an example
• 13. Do you mean to keep 2 significant digits and 2 decimal places? For example
• 14. Where have you seen decimals in your life? For example
• 15. What do you mean in real life? Take an example
• 16. "People destroy natural resources at will", give an example of life
• 17. Please give a concrete example to illustrate the influence of the environment on people
• 18. Can you give an example in your life to illustrate the practical significance of the inequality 2x + 5 > 11?
• 19. What is the point of this story fast
• 20. On paper, through what story, explain what