The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. which one of the following statements best explains why the speed of the satellite does not change although there is a net force exerted on it?
a) the satellite is in equilibrium.
b) the acceleration of the satellite is zero m/s2 .
c) the centripetal force has magnitude mv2 /r.
d) the centripetal force is canceled by the reaction force.
e) the centripetal force is always perpendicular to the velocity.

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves

Which transition by an electron will release the greatest amount of energy? oa ob oc od

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)