A transverse wave is a wave where the particles in the medium move perpendicular (at right angles) to the direction of the source or its propagation (think of a snake slithering through grass) an example of a transverse wave could be a light wave. Light waves for instance don’t need a medium in order to propagate but transverse waves in general do need a medium.
Answer:
The rate at which the automobile is moving away from the farmhouse is 27.29 m/h.
Explanation:
As shown in the figure, A denotes the position of farmhouse, B be the location of highway intersection and C be the direction along which automobile is moving.
Consider s be the distance between farmhouse and automobile which is represent by AC, x is the distance between intersection and automobile which is represent by BC and the distance between intersection of highway and automobile is represent by AB.
Applying Pythagoras Theorem to the figure,
(AB)² + (BC)² = (AC)²
Since, AB = 7 miles, BC = x and AC = s.
7² + x² = s²
Differentiating both sides of the above equation with respect to time :




When the automobile is 4 miles past the intersection, i.e.
x = 4 miles and
= 55 m/h, then

m/h
Answer:
4*9 = 36 m/sec at 9 seconds. The average speed is (0 + 36)/2 = 18 .
Explanation:
Answer:
The flea will reach to a height of 5.2 cm.
Explanation:
Let us assume it is given that, a flea reaches a takeoff speed of 1.0 m/s over a distance of 0.50 mm.
Initial speed, u = 1 m/s
Initial distance, x = 0.5 mm
We need to find the height reached by the flea. Using third equation of motion to find it.
At maximum height, its final speed, v = 0

Here, a = -g

or
h = 5.2 cm
So, the flea will reach to a height of 5.2 cm.
Answer:
The acceleration of the box is 0.67 m/s²
Explanation:
Given that,
Mass of box = 30.0 kg
Horizontal force = 230 N
Friction force = 210 N
We need to calculate the acceleration of the box
Using balance equation


Where, F = horizontal force
=frictional force
m= mass of box
a = acceleration
Put the value into the formula


Hence, The acceleration of the box is 0.67 m/s²