Which of the following best describes the way that scientists make observations

How often does the earth revolve around the sun?

As a carbonated drink, such as soda, is heated, what happens to the solubility of carbon dioxide gas in the drink? It increases. It decreases. It is not affected. It can increase or decrease.

A backpack has a mass of 8kg. it is lifted and given 54.9 J of gravitational potential energy. How high is it lifted? Acceration due to gravity is g=9.8m/s2

If 3.0 newtons are required to lift a carton 12 meters, how much work is done

Which equation represents the total energy of a system? A. Total Energy = Kinetic Energy B. Total Energy = Potential Energy + Gravity C. Total Energy = Potential Energy + Kinetic Energy D. Total Energy = Kinetic Energy + Activation Energy x Gravity

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