The mass of water displaced by a 20 g block of wood is… A. 10g
B. 20g
C. 5g
D. 40g

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Positrons are spontaneously emitted from the nuclei of

The amount of work done is determined by 2 factors. describe an example of work (using the scientific definition) list the 2 factors that determine the amount of work done.