Answer:
a = 32.48538491
b = 25.59883264
Step-by-step explanation:
To find the length of a, use the sine function:
To find the length of b, use tangent:
By definition, vectors are quantities that have magnitude (positive or negative) and direction.
Graphically, they are illustrated by directed line segments, with arrows that indicate the direction.
Evaluate the given statements.
1. Vectors have a size only. FALSE
2. Vectors have a size and a direction. TRUE
3. Vectors are indicated with arrows. TRUE
4. Vectors can have only positive values. FALSE
5. Vectors can have positive or negative values. TRUE
Answer:
D. 12.4 m
Explanation:
Given that,
The initial velocity of the ball, u = 18 m/s
The angle at which the ball is projected, θ = 60°
The maximum height of the ball is given by the formula
h = u² sin²θ/2g m
Where,
g - acceleration due to gravity. (9.8 m/s)
Substituting the values in the above equation
h = 18² · sin²60 / 2 x 9.8
= 18² x 0.75 / 2 x 9.8
= 12.4 m
Hence, the maximum height of the ball attained, h = 12.4 m
I have thrown a ball during gym.
i have knocked my water bottle off my desk
i have opened a door.
Answer:
The total magnification will be 40x.
Explanation:
As we know if the magnification of the eyepiece of a microscope be 
and that of the objective be 
, then the total magnification is given by
Given, 
and 
Therefore total magnification is 
