If an atom has two electrons outside of its nucleus, what number of protons and neutrons must be contained in the nucleus to result in a neutral atom? A. 2 protons, 2 neutrons B. 1 proton, 1 neutron C. 1 proton, 3 neutrons D. 4 protons, 4 neutrons

What is a wavelength?

What does the word kinesis mean?

The instrument which is commonly used to measure the intensity of radioactivity is called a

Which statement is most likely to be supported by objective data? a. in infancy, the color blue is associated with boys, and pink is associated with girls. b. when in doubt, punt; when certain, go for the goal on the fourth down. c.

A mass spectrometer is being used to monitor air pollutants. it is difficult, however, to separate molecules with nearly equal mass such as Co (28.0106 u) and N2 (28.0134 u).

4.) An apartment building is on fire and a guy is trapped on the fire escape ladder. There is a dumpster that is 6.3m away and is filled full of trash, and he is 7m above it.

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.

How has increased energy use associated with scientific advancements affected society? a. It has led to an increase of the concentration of atmospheric carbon dioxide. b. It has led to an increase in hazardous wastes from mining operations. c.

Water is moving with a speed of 5.7 m/s through a pipe with a cross-sectional area of 4.8 cm2. The water gradually descends 9.2 m as the pipe increases to 8.8 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.

Is Kepler's constant the same for moons orbiting a planet as it is for planets orbiting the sun? Why?