If a spring has a natural length of 5 cm and a force of 30 n is required to maintain the spring stretched to a length of 9 cm, find the spring constant.

What causes reddening of starlight? Explain how the reddish color of the Sun's disk at sunset is caused by the same process.

Which form of energy is related to the movement of charged particles?

A device that has the capacity to receive and store electrical energy is a (n) Insulator Capacitor

50 J of work was performed in 20 seconds. how much power was used to do this task?

Mechanical waves require a medium for transmission. a. True b. False

A glass window is a clear object that light passes through as it travels in a straight line. This is a good example of A. refraction of light. B. transmission of light. C. absorption of light. D. reflection of light.

Why is net force a vector sum A. All forces have direction and magnitude B. Forces can only be attractive C. All forces are contact forces D. There are four fundamental forces

Does the elf owl's small size allow it to live in cacti

If grapefruit juice has a ph of 3.0 and egg white have a ph of 8.0, which contains more h + ions? how many more?

Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. What is the wavelength,? Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e.