Answer:
5.52 m
Explanation:
Using the equation;
Vy = Vo sin θ
Where; Vo = 2.25 m/s and θ = 35°
We get;
= 2.25 sin 35°
= 1.29 m/s
Thus; Vy = 1.29 m/s
But a = -9.81 m/s (against gravity)
t = 1.20 s and
y = Vyt + 1/2 at²
where y is the height above the water
= 1.29 × 1.2 + (1/2 × -9.81 × 1.2²)
= 1.548 + (-7.0632)
= - 5.5152 m
Thus; the height of the girl above the water is 5.52 m
To explain how transverse and longitudinal waves work, let us give two examples for each particular case.
In the case of transverse waves, the displacement of the medium is PERPENDICULAR to the direction of the wave. One way to visualize this effect is when you have a rope and between two people the rope is shaken horizontally. The shift is done from top to bottom. This phenomenon is common to see it in solids but rarely in liquids and gases. A common application usually occurs in electromagnetic radiation.
On the other hand in the longitudinal waves the displacement of the medium is PARALLEL to the direction of propagation of the wave. A clear example of this phenomenon is when a Slinky is pushed along a table where each of the rings will also move. From practice, sound waves enclose the definition of longitudinal wave displacement.
Therefore the correct answer is:
C. In transverse waves the displacement is perpendicular to the direction of propagation of the wave, while in longitudinal waves the displacement is parallel to the direction of propagation.
Explanation:
The velocity is not needed. (its needed to find kinetic energy but its irrelevant to the question)
Potential energy = Mgh
Mass=5kg, height=10meters, g=9.8
P.e=5×9.8×10
=5×98
=490 joules
Hope it helps
:)
Answer:
The time required for sucrose transportation through the tube is 8.4319 sec.
Explanation:
Given:
L = 0.025 m
A = 6.5×10^-4 m^2
D = 5×10^-10 m^2/s
ΔC = 5.2 x 10^-3 kg/m^3
m = 5.7×10^-13 kg
Solution:
t = m×L / D×A×ΔC
t = (5.7×10^-13) × (0.025) / (5×10^-10)×(6.5×10^-4)×(5.2 x 10^-3)
t = 8.4319 sec.
Answer:do u have a text book so i can see
Explanation:
