Answer: True
Explanation: Because of the way this water cycle has always circulated our planet, there is indeed a chance that the water in your glass is the same water that thirsty dinosaurs were drinking about 65 million years ago
Answer:
Explanation:
For light passing through a single slit, the position of the nth-minimum from the central bright fringe in the diffraction pattern is given by
where
is the wavelength
D is the distance of the screen from the slit
d is the width of the slit
In this problem, we have
is the wavelength of the red light
D = 14 m is the distance of the screen from the doorway
d = 1.0 m is the width of the doorway
Substituting n=1 into the equation, we find the distance between the central bright fringe and the first-order dark fringe (the first minimum):
Answer:
11.72 m/s
Explanation:
Energy is conserved when there are no energy loses. So potential energy and kinetic energy must be the same at the beginning and at the end.
Mechanical energy is the addition of both energy types, which is conserved.
So E= P+ K,
E: Mechanical energy
P: Potential Energy
K: kinetic energy.
P= m*g*h
K= (m*v^2)/2
M:mass
G:gravity=9.8m/s^2
H:altitude=7m
V: Velocity.
So P+K is conserved,
P1+K1=P2+K2
At the beginning there's no movement, so V=0, then K1=0
At the end there's no altitude, so H=0, then P2=0.
For those reasons,
P1=K2
M*G*H= M*v^2*0.5. As M is in both sides, we can take it out, and replace gravity and altitude with the values we already have.
9,81(m/s^2)* 7m = v^2 *0.5
68.67 (m/s)^2 = v^2 *0.5
(68.67 (m/s)^2 :0.5) ^ (1/2)= |v|
137.34^0.5=|v|
11.72 m/s= |v|
The sign will depend on where are we considering the 0 so will it be positive velocity if it's increasing direction or negative if it is decreasing
To compute the net effect of two waves, we use the superposition principle, and we can call the resultant wave "superposed wave".
We can rewrite the sentence as follows:
"<span>If the above two waveforms were sound waves, we would hear the superposed wave louder. If the above two waveforms were light waves, we would see the superposed wave dimmer."</span>