Dos bloques de masas m y 2m están sostenidos en equilibrio sobre un plano inclinado sin fricción como se muestra en la figura de abajo. En términos de m y Θ, halle a) La magnitud T1 en la parte superior de la cuerda. b) La magnitud de la tension T2 en la cuerda inferior que conecta los dos bloques.

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i. e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i. e. include the distance traveled to the first encounter)

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation