PLEAS EPLEAS HEELP... Supersonic flight can cause molecules on the surface of an airplane to break apart and chemically react. what additional challenges to flight does this create a. this causes a lot of heat that the airplane must be shielded form
b. this can cause sonic booms that can damage building structures
c. the airplane must have additional aerodynamic features because of the added drag of having new molecules
d.. the flight pattern can become erratic due to loss of thrust and drag

How does the viscosity of magma change as magma cools?

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.

Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.