Why are occurrences of midlatitude cyclones less common over the United States in late summer than in winter and spring?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

What is the temperature in degrees celsius of a substance with a tempature of 49k

In an experiment, how can i change human errors? be specific.