an astronaut who weighs 700.0 N is standing o a scale in a rocket ship that is near-earth and is accelerating away from earth at 10.0 m/s^2. what is the reading on the scale?

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

Which articulations allow for greatest range of motion?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?