Acar travels 30.0 km to the south and then turns around and travels 20.0 km to the north in 1.5 hours time. what is the car's total displacement? what is the car's average velocity?

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

The mini-refrigerator fire was most likely caused by what type of wiring?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?