Cooling water from a river flows through the condenser (the low-temperature heat exchanger) at the rate of 1.2×108L/h (≈30 million gallons per hour). If the river water enters the condenser at 18∘C, what is its exit temperature?

a coal burning power plant

6/12=1/2

step-by-step explanation:

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.