Question1
Sarah, age 55, is experiencing some hot flashes of menopause and wants to mange her symptoms without taking hormone replacement. Which of following alternatives could she try as has research shown it to be efficient in reducing the number of hot flashes in middle-aged women?
Question2
A chunk of radioactive material encased in an idealized, perfectly insulating blanket gets warmer as its nuclei decay and release energy. Will the mass of the radioactive and blanket change? If so, does it enlarge or decline
Question3
A 0.250kg, 0.215m-diameter turntable rotates on frictionless bearings at 69rpm. A 0.016kg block sits at the center of turntable. A compressed spring shoots the block radically outward along a frictionless groove in surface of the turntable. What is the turntable's rotation angular velocity while the block reaches the outer edge? What is turntable's angular speed as the block reaches the outer edge?