What portion (division) of a meter stick is a centimeter?

A particular form of electromagnetic radiation has a frequency of 4.21 * 1015 Hz. (a) What is the wavelength in nanometers? In meters? Enter your answer in scientific notation.

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. if a force F is applied at one end of the rope, what is the force which the rope exerts on the block?

In what way is a piano an example of a quantized system?

4. X-ray radiation from diffraction and fluorescence instruments is a) Not very dangerous because the X-rays are absorbed in the air b) Very dangerous but poses little real hazard since instruments are designed to completely enclose all beams c)

Density is __per unit volume. length area space mass

Which of the following has the least impact on the environment? A. solar power B. nuclear power C. fossil fuels D. hydroelectric power

Why is steel better to conduct sound than air? use the words density and compression in your answer

4. How does density affect refraction of a lightwave?

Kinetic friction is affected by the weight of the object. TrueFalse

How is the temperature related to the speed of the particles