The propeller blades on a submarine have a radius of 6 feet. at full speed, they turn at 120 revolutions per minute. what is the angular velocity, in radians per minute, at the tip of the blade? round your answer to the nearest hundredth.

Step-by-step explanation:

It is given that,

Radius of the submarine, r = 6 feet

The angular velocity of the submarine,

We need to find the angular velocity in radians per minute at the tip of the blade.

Since, 1 revolution = 2π radians

120 revolution = 2π × 120 radians

So, 120 revolutions per minute is equivalent to 753.98 radians per minute. Hence, this is the required solution.

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

step-by-step explanation:

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