When the car moves and makes a sound that is louder that when the car is just sitting there
Answer: a) 1.846m
b) 0.923m
Explanation: given that height h = 1.9m
Assume his eyes are 5.4 cm below the top of his head
5.4 cm = 5.4 / 100 = 0.054 m
1.9 – 0.054 = 1.846 meter
The top of the mirror should be placed at 1.846m
That is the vertical distance from his eyes to top of his head.
Light must travel from the top of his head to the mirror in order for him to see the head. Then travel from this position to his eyes. To do this, the mirror must be placed at a position that is halfway between his eyes and the top of his head.
The minimal vertical distance from the level of the person’s eyes to the top of the mirror will be:
d = ½ ×1.846 = 0.923 meters
0.33 . Equation is Force of friction equals normal force times coefficient of friction, so 6=18u. Divide 6 by 18
Answer:
I believe it is vacuum of space
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
5. 35 - (-20) = 55
6. 
7. D and G
8. A, C, and E
9.
At t = 19,
At t = 27,
Therefore, displacement between t = 19 and t = 27 is:
26.67 - (-8) = 34.67
10. 
11. -20
12. 
