A 2kg hollow sphere with a 30cm diameter is welded onto a thin 5kg rod that is 1.3m in length to form a hybrid scepter-staff for a narcissistic king. The king will often balance it in his palm with the sphere up and then let it fall over and swing down. What is the difference in linear speed of the center of mass and the outer edge of the sphere when the staff-scepter is at the bottom?
At what angle from the vertical does the weld have to accelerate the sphere faster than gravity?

What happens in a global convection cell

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?