Answer:
The formula is dimensionally correct.
Explanation:
Given
Required
Prove its correctness
Write out the dimension of each:
--- displacement
--- velocity * time
--- acceleration * square of time
The expression becomes:
Apply law of indices
Both sides of the equation are equal
A. Bronze is a mixture because it is composed of two different materials and homogenous because it has the same composition throughout.
Answer:
The vulture loses 6.1 m height
Explanation:
Please see the attached figure.
The horizontal distance and the loss of height form a 90º triangle.
The loss of height is the side opposite the given angle (3.5º) and the 100 m horizontal distance is adjacent the angle.
Then, using trigonometric rules:
(1) sin 3.5º = h / hyp
(2) cos 3.5º = distance / hyp
where
h = height lost during the flight.
hyp = hypotenuse of the triangle
Using (2) we can calculate the hypotenuse:
cos 3.5º = 100 m / hyp
hyp = 100 m / cos 3.5º = 100.2 m
with the hypotenuse we can now calculate the loss of height using (1):
sin 3.5º = h / hyp
sin 3.5º = h / 100.2 m
sin 3.5º * 100.2 m = h
<u>h = 6.1 m</u>
( very modest drop in height indeed!)
<span> Neutralization reactions always produce water and a salt.</span>
Answer and Explanation:
The process of change in the frequency due to change in distance between the source and observer is known as Doppler effect.
There are two parts in this effect either change in frequency due to change in relative motion of source and observer in same direction or change in frequency due relative motion of source and observer in opposite direction.
Example of Doppler effect
The best example of Doppler effect is that the frequency of sound increases when source comes closer to observer.
