Which of the following properties increase as you move from left to right across a period? select all that apply. a)ionization energy b)nonec)electronegativityd)atomic radius

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?

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

If frequency goes up, what happens to wavelength? does it get shorter or longer?