Answer:
The handrails must be approximately 10.63 meters long
Explanation:
The given parameters are;
The height of the bleachers, h = 8 m
The depth of the bleachers, d = 7 m
The length of the hand rails to go along the bleachers from bottom to top is given by Pythagoras' Theorem as follows;
The length of the hand rail = √(d² + h²)
∴ The length of the hand rail = √(7² + 8²) = √113 ≈ 10.63
In order for the handrails to go along the bleachers from top to bottom, they must be approximately 10.63 meters long.
<span>Direction and magnitude it is also </span>determined<span> by the gravitational acceleration any impacts or interruptions are ignored. </span>
Answer:
Conservation of Energy: the total energy of the system is constant. Conservation of Momentum: the mass times the velocity of the center of mass is constant. Conservation of Angular Momentum: The total angular momentum of the system is constant.
Explanation:
none
Focal length = 15cm
Magnification = +4
Type of lens : <u>convex</u>
We have to find distance of object..
★ <u>Lateral Magnification :</u>
m = v/u
- v denotes distance of image
- u denotes distance of object
4 = v/u
v = 4u
★ Lens Formula :-
→ 1/v - 1/u = 1/f
Focal length of convex lens is taken +ve and that for concave lens is taken -ve.
→ 1/4u - 1/u = 1/15
→ -3/4u = 1/15
→ u = -45/4
→ u = -11.25 cm
∴ (D) is the correct answer
