This diagram shows how a certain type of precipitation is formed. Water drops are caught in up-drafts and down-drafts, over and
over, before they fall to Earth as
A) dew.
B) hail.
C) rain.
D) snow.
A) dew.
B) hail.
C) rain.
D) snow.
1 answer:
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Answer:
Number of turns on the secondary coil of the adapter transformer is 10.
Explanation:
For a transformer,
where is the voltage induced in the secondary coil
is the voltage in the primary coil
is the number of turns of secondary coil
is the number of turns of primary coil
From the given question,
=
⇒ =
= 9.999733
∴ = 10 turns
The initial velocity of the ball is 1.01 m/s
Explanation:
The motion of the ball rolling off the desk is a projectile motion, which consists of two independent motions:
- A uniform horizontal motion with constant horizontal velocity
- A vertical accelerated motion with constant acceleration (, acceleration due to gravity)
We start by analyzing the vertical motion: we can find the time of flight of the ball by using the following suvat equation
where
s = 1.20 m is the vertical displacement (the height of the desk)
u = 0 is the initial vertical velocity
t is the time of flight
Solving for t,
Now we analyze the horizontal motion. We know that the ball covers a horizontal distance of
d = 0.50 m
in a time
t = 0.495 s
Therefore, since the horizontal velocity is constant, we can calculate it as
So, the ball rolls off the table at 1.01 m/s.
Learn more about projectile motion:
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