What early advance first increased the ability to communicate over long distances?

Magnetic field lines, generated by a long straight wire carrying a current, are circles concentric with the wire and lie in planes perpendicular to the wire. a. True b. False

An asteroid is traveling in a straight line at a constant speed of 327 m/s. How long will it take for a displacement of 732 km to occur?

An object moving at a constant speed of 25 m/s is making a turn with a radius of curvature of 7 m (this is the radius of the "kissing circle"). The object's momentum has a magnitude of 78 kg·m/s.

A 60kg bush walker is suffering from hypothermia, having an average body temperature of 33.5 degrees Celsius. When rescued, she was wrapped in a blanket and given two 310ml cups of warm tea eat at a temperature of 60 degrees Celsius.

Circle the item (s) which are properties of a system: (A) Shaft work (B) Temperature (C) Volume (D) Heat (E) None of the above

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?

The state of matter that has particles that slide by one another