A child is holding a cup of hot tea. His mother, a physicist, warns him not to start running with the tea. According to Newton's first law, why should his mother be concerned if the child started running?

What is the density of a 700 kg object with a volume of 649 m3? (Density: D = )

A balloon contains 30.0 l of helium gas at 103 kpa.

What is a fossil lineage? -A line of fossils in the same rock layer. -A sequence of fossils that shows the evolution of characteristics over time. -A group of fossils that are all about the same age.

A table exerts a 4.0 Newton force on a book which lies at rest on its top. The force exerted by the book on the table is 0.0 N 2.0 N 4.0 N 8.0 N

What are the first and second object in a gravitational field

What is the source of energy for the process of evaporation?

How could you compare the energy carried in two different longitudinal waves

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions