Which of the following is NOT an example of a mechanical wave?
A) ultraviolet rays radiating from the sun to tan you on the beach
B)vibrations of a guitar string
C)ocean waves
D)sound waves

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?