Answer:
The magnets need to be placed with red closest to blue.
Opposite poles attract.
The magnets will be attracted to each other with enough force to stick together.
Explanation:
The answer is B
Using the equation, F=MA, we can determine that...
(125kg) (3m/s^2) = 375N
The time it takes "to complete one cycle" is a perfect definition for <em>period</em>.
So the <em>2 sec</em> that you measured is the swing's period.
Frequency is just 1/period (the 'reciprocal' of the period).
For this swing, the frequency is 1/(2sec) = 0.5 per second = <em>0.5 Hz</em>.
( "Hertz" means "per second")
Explanation:
It is given that,
Radius of bowl, r = 3 m
A small block is released from rest from the edge of a large hemispherical friction less bowl. Let v is the speed of the mass when it passes through the bottom of the bowl and u is the initial speed of the mass, u = 0. Using conservation of energy as :

h = r = 3 m


v = 7.66 m/s
or
v = 7.7 m/s
So, the speed of the mass at the bottom of the bowl is 7.7 m/s. Hence, this is the required solution.