Barriers to entry into a market come in many forms. Which lists some of the usual barriers to entry? A) licenses, patents, high start up costs B) weak demand for the product, low market price Eliminate C) lacking government regulation, plentiful supply of labor D) high unemployment, poorly skilled labor, resource shortages

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

Need only answer if you think you know it