Which one of these wireless technologies is not in the permeable zone of the radio wave spectrum? 1. remote-controlled toy
2. broadcast television
3. garage door opener
4. weather radar

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34