Atoms of which element have two protons and two electrons?

a. Carbon

b. Helium

c. Hydrogen

d. Lithium

Given a resistance of 1500 ohms and a current on 0.03 amps, what's the voltage

Which of the following situations best illustrates Newton's first law

A lightning flash may transfer up to 14 C of charge through a potential difference of 107 V How much energy does this involve? For how long in minutes does this energy light a 100 W bulb?

Discuss how latitude and longitude on Earth are similar to declination and right ascension in the sky.

A farmer conducts an experiment to determine whether or not feeding his milk cows an organic diet affects the taste of the cow's milk. He selects two cows and feeds them equal amounts of food.

PV = nRT, is the a. equation of state of an ideal gas b. theorem of equipartition of energy c. second law of thermodynamics

Which conducting electricity has the most harmful effects?

Which is the farthest known planet from the sun? a. Jupiter b. Saturn c. Uranus d. Neptune

Laser light of wavelength 470 nm shines on a pair of slits at normal incidence, producing a pattern of maxima on a large screen 92.0 cm away from the slits. The second order maximum is observed to be 31.7 cm away from the central maximum. a.

What does the slope of a line of best fit represent