GIVING BRAINLIEST TO THE RIGHT ANSWER examine the information for the two samples described in the chart. How are zinc and sodiu
m alike?
A. They have the same hardness at room temperature.
B. They are both dolids at room temperature.
C. They have the same color.
D. They have the same boiling point.
A. They have the same hardness at room temperature.
B. They are both dolids at room temperature.
C. They have the same color.
D. They have the same boiling point.
2 answers:
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Answer:
, upward
Explanation:
The passenger on the wheel experiences a centripetal acceleration, which is the one that keeps him in a circular motion.
The direction of this acceleration is always towards the centre of the circular trajectory: so when the passenger is at the lowest point of the ride, the acceleration is upward.
Concerning the magnitude, it is given by
where
is the angular velocity
r = 15 m is the radius
We need to find the angular velocity; we know that the wheel completes 3 revolutions in one minute. Each revolution corresponds to an angle of rad, so the total angular displacement is
rad
And the time is
So the angular velocity is
And substituting into the equation of the acceleration,