It's ' D '.
-- Period: The angle is (pi/2 · t).
From t=0 to t=4 sec, the angle changes by 2pi. So the period is 4 sec.
-- Amplitude: The biggest the cosine can ever be is 1 .
When the cosine part is 1, 'd' is 6, so the amplitude of the model is 6 .
-- Position when t=0:
When t=0, the angle in the cosine is zero.
The cosine of zero is 1 .
So when t=0, d=6 . There you are.
Answer:
450
Explanation:
total magnification = eyepiece lens x objective lens
10 x 45 = 450
Based on the given situation above, I can say that the symbiotic relationship that exists between the flowers and the bees is MUTUALISM. In this kind of relationship, both organisms benefit from the activities that they do. In this case, the brightly colored flowered need the bees for pollination, and in exchange, the bees get nectar. Hope this helps.
The three forces are:
Push force from dog = 20 N (sideways)
Weight of cart = 98 N (downwards)
Normal force = 98 N (upwards)
Answer:
C.
Explanation:
To solve the problem we need to use the concept related to Centripetal Force. According to Newton's second law, for an acceleration to occur, a force must act in the direction of that acceleration. Thus, if we consider a particle of mass m, in uniform circular motion, it will be subjected to a centripetal force given by:
Where,
m= mass
v= velocity
r = radius
Re-arrange for the radius
Our values are given by,
Replacing we have that
Therefore the correct answer is C.
