Which one of the following is the pigment found in redheads?

a) Keratin

b) Melanin

c) Pheomelanin

d) Cortex

The electric field strength is 20,000 N/C inside a parallel-plate capacitor with a 1.0 mm spacing. An electron is released from rest at the negative plate. What is the electron's speed when it reaches the positive plate?

In an electric circuit it must be what or there will be no flow of electricity?

As a sound wave travels from liquid water into ice, its wavelength would

Which of the following energy forms is associated with an object in motion? a. potential energy c. nonmechanical energy b. elastic potential energy d. kinetic energy

If a scale of the solar system was built where 1mm equaled 1 mile, could the model be practically built in a city

Describe the position of earth moon and sun during a solar eclipse

What is an output force? a. the force a person applies to a simple machine b. the force a simple machine applies to an object c. the net force on a system d. the applied force on a system

Would iron and carbon from metallic bonds

How many joules does a shortbread cookie have

What happens to frequency when an object is moving towards you?