What is physical therapy?

A hockey puck wont slide very far on concrete or asphalt, but it will slide for a very long time on ice. Why is this?

Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude F due to the other. With time, charge gradually leaks off of both spheres.

What two categories do stress fall into?

Along the frictionless path you have chosen, the main force (s) acting on the puck after receiving the kick is (are) :

Dr stones is investigating the parts of the brain that are activated when people watch frightening movies dr. Stone is investigating using which perspective

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.

A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma)

Which is a legacy of the enlightenment?

An instrument for observing very small objects is a. micrometer spectroscope microscope magnoscope

Who was copernicus and what have he done for science?