Answer:
They have two poles.
Explanation:
All magnets have two poles, even in nature.
The variable that changes is the period of the motion.
<h3>What is simple harmonic motion?</h3>
The term simple harmonic motion refers to a regular repeating motion. The acceleration of the SHM is always directed towards the center. The spring is an example of a system undergoing simple harmonic motion.
From the description in the question, the variable that changes is the period of the motion.
Learn more about simple harmonic motion: brainly.com/question/17315536
The angular speed of the minute hand of a watch is:
-- one revolution per hour
-- 2 pi radians per hour
-- 360 degrees per hour
-- 6 degrees per minute
-- 0.1 degree per second
Answer:
900
Explanation:
v = s / t = 9000m / 10 s = 900m/s
Answer:
B'=1.935 T
Explanation:
Given that
magnetic field ,B= 0.645 T
We know that magnetic filed in the solenoid is given as
I=Current
n=Number of turn per unit length
μ0 =magnetic permeability
Now when the current increased by 3 factors
I'=3 I
Then the magnetic filed
B'=3 B
That is why
B' = 3 x 0.645 T
B'=1.935 T
Therefore the new magnetic filed will be 1.935 T.