The time taken is 50 s
Explanation:
For a body moving in uniform motion (= at constant velocity), the velocity of the body is given by:

where
v is the velocity
d is the distance covered
t is the time taken
In this problem, we have a bird travelling with uniform motion. We know that:
v = 8 m/s is the velocity of the bird
d = 400 m is the distance travelled
Solving for t, we find the time the bird needs to cover this distance:

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Answer:
ultraviolet light shining on the minerals will cause them to give off visible light.
Explanation:
Here we know that in all electromagnetic waves have certain range of energy
Here in the above case when a given frequency range of electromagnetic wave incident on the fluorescent mineral then that mineral will absorb few amount of energy and the remaining energy will throw back into the surrounding again.
So here the main concept is that when a electromagnetic wave which is higher in energy then visible light incident on fluorescent material then it will absorb some amount of energy and the remaining energy is released in form of light
So here energy more than visible light is for ultraviolet light only
so here the correct answer would be
ultraviolet light shining on the minerals will cause them to give off visible light.
Answer:
A but not 100% certain.
Explanation:
you can eliminate C since it doesn't mention gravity, and B says gravity is pushing up on the orange. I think it is A because friction is going against the orange because it has to pass through the air, and that creates friction. I think that is the reason why things burn up when they enter the earths atmosphere.
it is B and i cant explain sadly because i dont even know why time doesnt flow backwards even though that would be cool. please mark brainiest
Answer:
v = 1.69 m/s
Explanation:
Given that,
Displacement of the student is 304 m due North and it takes 180 s.
We need to find the student's average velocity. Using formula of velocity.
Velocity = displacement/time

Hence, the student's average velocity is 1.69 m/s.