Asalesman travels to 2 customers. the first is a journey of 100 miles and takes 2 hours. he then goes to the second which is 80 miles in 1 hour. what is his average speed in mph?

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

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.

Can a molecule have bond dipoles but not have a molecular dipole?