A stone is dropped into a quiet lake and waves move in the form of circles at a speed of 4 cm/ sec. At the instant, when the radius of the circular wave is 10 cm, how fast is the enclosed area increasing

Q: Can the distance traveled by a particle ever be less than its displacement? When are they equal?

A: No, the magnitude of the displacement is always less than or equal to the distance traveled.

Q: A small rocket is launched straight up in the air at a speed of 4ft/sec. A camera on the ground, 10…

A: Consider the given information. At any time t, rocket is at C tanθ=ACAB=AC10

Q: A canal is 300cm wide and 120 cm deep. The water in the canal is flowing at a speed of 20km/h how…

A:

Q: On a day  when the wind is blowing toward the south at 3 m/s, a runner jogs west at 1.9 m/s.what is…

A: Let V1 be the velocity of the air and V2 be the velocity of the runner, then the relative velocity…

Q: Pebbles are poured out of a tube at one cubic meter per second. It forms a pile which has the shape…

A:

Q: At a given instant the legs of a right triangle are 16 cm and 12 cm, respectively. The first leg…

A: Given: -The legs of a right triangle are 16cm and 12cm, respectively. The first leg decreases at…