Why are emperor penquins considered a species?

In a stringed musical instrument, the sound frequency of a particular string can be increased by A. tightening the string. B. increasing the string's thickness. C. loosening the string. D. lengthening the string.

3 Which of the following does not contribute to the potential energy of an object? A height of the object above the Earth's surface B gravitational constant or g of the Earth C velocity of the object D mass of the object

Thermal imaging cameras use what kind of electromagnetic energy

Which are uses of electromagnetic waves? Check all that apply. cooking foods insulating buildings using heat lamps transmitting radio signals using medical imaging lighting rooms cooling refrigerators

What is the magnetic force acting on an electron if its speed is 3.0 * 106 meters/second and the direction is perpendicular to a magnetic field of 0.020 teslas? The value of q = - 1.6 * 10-19 coulombs.

Protons and neutrons strongly attract when they

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?