Answer:
a) angle θ = 53.1º, b) V = 15 i ^ m/s, a = - 9.8 j ^ m/s² c) Y = 15.9 m
Explanation:
a) In the problem they indicate that we treat the drops of water like projectiles, as they give us the time it takes to travel distance we can find the horizontal speed
Vox = X / t
Vox = 45.0 / 3.00
Vox = 15 m / s
They also indicate the speed of water 25m / s, we calculate the angle
Vox = Vo cos θ
Vo cos θ = 15
Cos θ = 15 / Vo
θ = cos⁻¹ (15 / vo) = cos⁻¹ (15/25)
θ = 53.1º
This is the elevation angle.
b. At the highest point the vertical speed must be zero (Vy = 0), the constant horizontal speed since there is no acceleration on this axis and the only acceleration acting on the body is the acceleration of gravity
V = Vox i ^ = 15 i ^ m / s
a = -g j ^ = - 9.8 j ^ m /s²
Where the negative sign indicates that the acceleration is towards the center of the earth
c. The water takes to reach the building 3 s let's calculate the height
Y = Voy t - ½ g t²
Voy = Vo sin θ
Voy = 25 sin 53.1
Voy = 20 m / s
Y = 20 3 - ½ 9.8 3²
Y = 15.9 m
A hypothesis must be TESTABLE in order to be termed a scientific hypothesis.
-Hope this helps
Answer:
The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
Explanation:
Hope this helps & plz mark brainiest
The value of the object distance at which the lens will act as a simple microscope is 25 cm.
<h3>What is the least distance of distinct vision?</h3>
The least distance of distinct vision is the smallest distance someone with "normal" vision can comfortably look at something.
The least distance of distinct vision of a microscope is 25 cm.
When the object is placed at focal length of 15 cm, a virtual, erect and magnified image will be formed at near point (D = 25 cm) from the eye.
Thus, the value of the object distance at which the lens will act as a simple microscope is 25 cm.
Learn more about simple microscope here: brainly.com/question/24480866
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I hope you understand....