Physics: which action requires no work by a weightlifter? a.) lifting a weight from the floor to above his head b.) pushing a weight across the floor c.) setting the weight down on the floor d.) carrying a weight 1m across a level surface

Which subatomic particle has a negative charge

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?