3. A 50 kg sled is pulled at a constant speed by a 70 N force. a) What is the force of friction? How do you know?
b) What is the coefficient of friction?
c) How much force is required to pull the sled with a 20 kg box on it?

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.

How many atoms of nitrogen are in the chemical formula ni(w on

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive