Only some metals are attracted by magnets; these metals are called ferromagnetic is your answer
Answer:
Explanation:
Acceleration can be found by dividing the change in velocity by the time.
(<em>v </em>is the final velocity, <em>u</em> is the initial velocity, <em>t </em>is the time).
The velocity increased from 22 m/s to 236 m/s in 5 seconds. Therefore:
Substitute the values into the formula.
Subtract in the numerator.
Divide.
The acceleration of the object is <u>42.8 meters per square second.</u>
Answer:
166 666 666.7 years
Explanation:
We start the question by making the units uniform. We are told that the continents move at 3 cm/year = 0.03 m/year.
We are also told that the continents are now 5000 km = 5 000 000 m apart
So to calculate the time it took for them to be this far apart
t = distance/speed
t = 5 000 000 m/(0.03 m/year) = 166 666 666.7 years
Period is T=1/f
T=1/60 = 16.67 milliseconds