Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it is an emission line spectrum or an absorption line spectrum?

How many amps does a 60 watt light bulb use when it's powered by 120 volts

A 1440 kg car has just passed a diner. The closest the car came to the diner was R = 16.5 m, but the car has driven another x = 36.7 m in the 2.05 s elapsed since then.

Could tests be performed to support the clamim?

The principle of relativity states that, all the laws of physics are the relative (different) in all inertial reference frames. O True O False

Identify these elements of photosynthesis.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.

Which statement is true? The speed of sound in air is inversely proportional to the temperature of the air. The speed of sound in air is directly proportional to the temperature of the air.

What is the molar mass of an ideal gas if a 0.800 g sample of this gas occupies a volume of 200. mL at 50.0 oC and 720. mm Hg?

When unequal resistors are connected in parallel in a circuit,?

A piano tuner hears three beats per second when a tuning fork and a note are sounded together and six beats per second after the string is tightened. What should the tuner do next, tighten or loosen the string? Explain.