Which of the following is an example of acceleration? select one: a. a boy walks two miles in one hour. b. a girl walks two miles per hour north for three hours. c. a boy walks two meters north, turns west, and walks another two meters. d. a girl drives a total distance of 240 miles in just under four hours.

Which process is represented by the pv diagram? a. the isobaric process b. the isovolumetric process c. the isothermal process d. the adiabatic process

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.