What are the characteristics distinguishes helium (He) from the other noble gases

A. Helium has two valence electrons

B. Helium has a milky-white color

C. Helium has a strong odor

D. Helium is highly reactive

What is the forward velocity of a 250 lb stone projectile that leaves a medieval catapult 55 degrees from the ground at 50 m/s?

What determines the composition of a rock

How does Newton's third law explain the forces involved when a car hits a concreate barricade

Describe the energy transformations that occur when you bounce a ball?

Which statement is true about divorce in the United States? ' A. The divorce rate is lower for second marriages than first marriages. B. Divorce usually leads to a higher income and higher standard of living. C.

For slowly moving objects, the drag force in water is approximately proportional to the speed of the object. The Escherichia coli (E. coli) bacterium propels itself slowly through water by means of long, thin structures called flagella.

How do electric and magnetic fields interact to create electromagnets?

Select the correct answer from each drop-down Two magnets are placed as shown in the 00 В D between the poles B and . And the force of between the poles A and DIS Reset Next

Two main pieces of evidence support the big bang theory and the idea that our universe is continually expanding: Doppler shift and cosmic background radiation. Explain how these phenomena provide evidence of the expansion of the universe.

How was bohr atomic model similar to Rutherford's model