Jessica stretches her arms out 0.8 m from the center of her body while holding a 2.0 kg mass in each hand. she then spins around on an ice rink at 1.2 m/s.
a. what is the combined angular momentum of the masses?
b. if she pulls her arms in to 0.12 m, what is her new linear speed?

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?