When 318 cal of energy is added to 279g of copper at 14.8°C, the temperature increases
to 27.2°C. What is the specific heat of copper?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

How does a noncompetitive inhibitor reduce an enzyme’s activity?

Light waves can move through , but they travel fastest when they move through a(n) .