Answer:
a) 3 inch pulley: 11,309.7 radians/min
6) 6 inch pulley: 5654.7 radians/min
b) 900 RPM (revolutions per minute)
Step-by-step explanation:
Hi!
When a pulley wirh radius R rotantes an angle θ, the arc length travelled by a point on its rim is Rθ. Then the tangential speed V is related to angular speed ω as:
When you connect two pulleys with a belt, if the belt doesn't slip, each point of the belt has the same speed as each point in the rim of both pulleys: Then, both pulleys have the same tangential speed:
We need to convert RPM to radias per minute. One revolution is 2π radians, then:
The saw rotates with the same angular speed as the 6 inch pulley: 900RPM
Answer:
Step-by-step explanation:
A) Popular novels from the past often ask provocative questions that are important to consider today.
In this speech, President Reagan uses the ending of a popular novel of the '60s to help pose his question about whether history still has a place for America, her people and her ideals. He takes provocative questions written in an old novel and uses them to show important subjects that need to be addressed today.
B) Many Americans have given up and say that the nation is no longer great or a land of dreams.
In his speech Reagan states that many Americans have lost their faith in their country and no longer believe that it is a place for dreams and greatness. This people say that Americans must "cut our expectations, conserve and withdraw"
C) President Reagan believed that John Wayne would argue that he was not the last American hero, because there are many more.
After the passing of the iconic Hollywood actor, John "Duke" Wayne, the headlines on the newspapers called him the "Last American Hero". Reagan, being a close friend of the late actor, stated that Wayne would've hated being called that, since he knew there were still many other heroes in America.
Answer:
k=2
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
