Which two elements will be the most alike and why?

a. Helium (He) and Hydrogen (H)

b. Oxygen (O) and Neon (Ne)

c. Lithium (Li) and Sodium (Na)

What is Young's interference? (b) How should the number of observable interference fringes change as the distance between the two slits increases? Assume that the slit width remains unchanged.

What are the traits that you think a person who wants to become a member of Congress should have?

Which factors affect the strength of the interaction btween two objects with electrical charges?

A soccer ball of mass 0.35 kg is rolling with velocity 0, 0, 1.8 m/s, when you kick it. Your kick delivers an impulse of magnitude 1.8 N · s in the - x direction. The net force on the rolling ball, due to the air and the grass, is 0.

You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. You shoot the gun straight up, and it takes 36.761s for the dart to land back at the barrel.

What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 10 Hz?

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.

Think of the last five things you read. Now think of a type of reading you havent done recenty have never read. What kind of pattern do you see in your reading? What is your favorite type of reading and your least favorite type of reading?

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun