The earth is made up of 3 layers,the crust,mantle,and core,but the largest is the mantle
The period of the pendulum of length 3. 171 m when acceleration of gravity is 9. 832 m/s, is 3.57 seconds.
<h3>What is time period of pendulum?</h3>
Pendulum is the body which is pivoted to a point and perform back and forth motion around that point by swinging due to the influence of gravity.
The time period of a pendulum is the time taken by it to complete one cycle of swing left to right and right to left.
It can be given as,

Here, (g) is the gravitational force of Earth and (L) is the length of the pendulum.
A pendulum of length 3.171 m. The acceleration of gravity is 9.832 m/s2. The period at the north pole is,

Thus, the period of the pendulum of length 3. 171 m when acceleration of gravity is 9. 832 m/s, is 3.57 seconds.
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Answer:
B.Focused,warm
Explanation:
when the rays are focused more energy an area recieves and it is warmer there.
The ratio of the total charge on the charges, Q2/Q1 is; 9
<h3>Electric field and Total Charge</h3>
The electric field due to a charge is directly proportional to its magnitude and inversely proportional to the square of the distance to such point;
Since, E1 = E2, it follows that;
Where, d1 = 0.5 and d2 = 1.5
Q2/Q1 = 9.
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