Why do astronauts in orbit in space shuttle seem to float

A sphere is charged with electrons to -1 * 10-5 C. How many electrons make up this charge? The elemental charge is 1.6 * 10-19 C.

How does a ferromagnetic rod inside a solenoid affect the strength of an electromagnet

What could be put into the center section of this Venn diagram?

What does the slope of the trend line represents on a x-y graph

What is the name given to the force of gravity acting on you?

How far is Jupiter from the sun?

Steam moves into a cylinder of a steam engine at a constant pressure and does 2.34 J of work on a piston. The diameter of the piston is 3.4 cm and the piston travels 4.6cm. What is the pressure of the steam?

Identify each type of simple machine.

A car's speedometer reads 20 m/s after accelerating, from a standing start, for 25s. What was the magnitude of its acceleration?

What happens to the period of a pendulum and the period of a spring as the amplitude of the oscillation increases? Briefly give an explanation for this relationship.