Una persona empuja un carrito de compras de masa 20kg aplico una fuerza de 30 N los ejes de las ruedas no están bien engrasados y en coche cuenca algunas ruedas no giran produciendose una fuerza de rozamiento del suelo sobre las ruedas F2=30 N, Calcular el trabajo realizado por cada fuerza y el trabajo neto realizado por ambas fuerzas en un desplazamiento se x=8,0m

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.