Determine if the data are qualitative or quantitative. Zinc is a silver-gray metal. Chlorine has a density of 3.2 g/L. Gallium is not found in nature. Nitrogen has a melting point of –210.00°C. Aluminum is a solid.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Ways that industry and agriculture use physical properties to separate substances

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.