I will mark brainliesr 1. Consider the device you created.
A. Is energy exchanged between your system (the device) and its surroundings?
B. Is matter exchanged between your system (the device) and its surroundings?
C. Is it an open, closed or isolated system? Explain.
2. Describe two examples of how the law of conservation of energy is demonstrated in the
device you created.

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

The heliocentric and the geocentric models of the solar system included these central principles

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?