Which of the following separation methods is used in refining oil?

chromatography

simple distillation

fractional distillation

filtration

How was the rotation rate of Mercury determined?

Observe: Air pressure is equal to the weight of a column of air on a particular location. Airpressure is measured in millibars (mb). Note how the air pressure changes as you move StationB towards the center of the high-pressure system. A.

Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart? a football thrown in the air a kite flying on a string a golf ball rolling off a table water spraying from a fountain

What is the cause of the Earth's magnetic field? A. The solar energy radiating from the Sun makes an impact on Earth's atmosphere and produces a magnetic field. B. The Sun exerts a gravitational pull on the planet and produces a magnetic field. C.

In an experiment, a mouse lemur is challenged under various circumstances to identify which of two cups contains a mealworm. Based on lecture, which of these circumstances would give the lemur the highest chance of success? A.

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars

A 111.6 g sample of iron was heated from 0°C to 20°C. It absorbed 1004 J of energy. What is the specific heat capacity of iron?

A car is driving towards a brick wall at a constant velocity (don't try this at home!) and the driver honks the horn of the car. the sound of the horn reflects from the wall and the echo is heard by the driver.

Mass number of an atom with 11 protons