While on a luge run in the Olympics, the sled (mass = 157 kg) rounds a horizontal curve of radius 5.8 m with a speed of 18.5 m/s. Assuming there is no friction, what is the normal force exerted by the track on the sled?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th