An acceleration of +3.5 m/s² results when two forces act on an object. The first force is 100 N to the right and the second force is 40 N to the right. (A) What is
the net force on the object? (B) What is the object's mass?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

What is similar between metals and suspensions

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?