A fish swimming in a horizontal plane has a velocity Vi= (4i+j)m/s at a point in the ocean where the position relative to a certain rock is Ri=(10i-4j)m After the fish swims with constant acceleration for 20s, its velocity is Vf=(20i-5j) m/s Then if the fish maintains this constant acceleration, where is it t=25s​

Positrons are spontaneously emitted from the nuclei of

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.