Apebble is dropped into a calm pond, causing ripples in the form of concentric circles. the radius r of the outer ripple is increasing at a constant rate of 3 foot per second. when the radius is 8 feet, at what rate is the total area a of the disturbed water changing?

150.79 ft²/s

Explanation:

area of the circle = π r²

A = π r²

hence the rate of total area of the disturbed water changing is equal to

150.79 ft²/s

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right