Helicopter blades withstand tremendous stresses. in addition to supporting the weight of a helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the tip. (a) calculate the magnitude of the centripetal acceleration at the tip of a 4.00 m long helicopter blade that rotates at 300 rev/min. (b) compare the linear speed of the tip with the speed of sound (taken to be 340 m/s).

Imagine a correspondence between thomas hobbes and john locke. first, write a letter from hobbes to locke in which hobbes argues that absolute monarchy is the ideal form of government. then write a second letter from the perspective of john locke in which he answers and refutes hobbes’s argument. even though both hobbes and locke lived during the 17th century and would not have been aware of the enlightened despots the 18th century, be sure to mention how hobbes and locke might have felt about the possibility of these rulers.

Can a society achieve liberty without equality? explain.

Is the universal urge to strive for perfection in order to overcome feelings of inferiority. a. pleasure principle b. striving for superiority c. collective unconscious d. reality principle