Which of the following properties can be inferred from the star's orbital period?

a. the planet's orbital radius

b. the planet's mass both

c. the planet's orbital radius and its mass

d. neither the planet's orbital radius nor its mass

How shallow must the ocean floor be for waves to start to "feel bottom" for a wave set with a wavelength of 20 feet?

When an earthquake occurs energy radiates in all directions from its source which is called the?

What was the cause of the military overthrow of nigeria's government in the 1980s? a. the assassination of the country's president b. the refusal of the world bank to lend the country money for economic redevelopment c. an escalating civil war d.

The earth's polar areas lie in the a. mid-latitudes. c. major latitudes. b. high latitudes. d. low latitudes.

Why did some leaders called for African Americans to be allowed to fight in the civil war

How can you tell that a government is a dictatorship?

What is the slope of a line perpendicular to the line whose equation is x+2y=14

How often does Earth's magnetic field change direction?

Does Nigeria border Chad? Land to land interaction, not on Lake Chad

Which of the following countries south of the Sahara is the most stable? A. Somalia B. Ivory Coast C. South Africa D. Chad