# Lyndsay

1. ## Physics

What is the frequency range of light seen when you look at a black object? 1. All possible colors 2. ultra violet colors 3. no visible colors 4. infra-red colors
2. ## physics

An excited atom emits a photon of a certain frequency. Then two photons of this frequency fly towards the atom. Which of the following is likely to happen next? 1. An atom will emit another photon of the same frequency. 2. The atom will absorb one of the
3. ## Physics

Part One: The decibel level of the noise from a jet aircraft is 130 dB when measured 19.3 m from the aircraft. How much sound power does the jet aircraft emit? Answer in units of W - 46673.5W I need help with Part Two: Part Two: How much sound power would
4. ## Physics

Part One: The decibel level of the noise from a jet aircraft is 130 dB when measured 19.3 m from the aircraft. How much sound power does the jet aircraft emit? Answer in units of W - 46673.5W I need help with Part Two: Part Two: How much sound power would
5. ## Chemistry

Why is caffeine susceptible to analysis by reversed-phase HPLC and why couldn't it be performed by GC?

1. ## Physics

5. all visible colors 6. No possible colors
2. ## Physics

yes, the quest does not care about significant figures
3. ## Physics

When I plug in the answers to that equation and do the work the quest says thats incorrect
4. ## Physics

It says this is incorrect
5. ## Physics

I am unsure how to solve for V when given the circumference instead of the radius.