In a device like the one shown below, the mass of the cylinder is 8 kg and the cylinder falls a distance of 200 m. As a result, the temperature of the water increases by 4.2°C. What would the increase in temperature be if the mass of the cylinder were 16 kg?

Increase in the temperature of water would be 8.4 degree C

Explanation:

As we know by energy conservation

Change in the gravitational potential energy of the cylinder = increase in the thermal energy of the water

Here we know that the gravitational potential energy of the cylinder is given as

here we have

m = 8 kg

h = 200 m

now we can say

now if the mass of the cylinder is increase to 16 kg

then we have

now from above two equations

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.