a) A table tennis ball has been hit is about 13.16 times as fast as the speed for the swimming. What is the speed of the table tennis ball?

A piece of hot metal is put into an equal mass of water. The water temperature rises 5o and the metal's temperature drops 10o. What is the specific heat of the metal?

Magnetite, Fe3O4, is a ferrimagnetic, rather than a ferromagnetic material that contains different iron isotopes. How is it different from ferromagnetic minerals? A) It has opposing magnetic moments. B) It can be spontaneously magnetized.

Heat given off by a fire in a fireplace is an example of a. conduction. b. radiation. c. insolation. d. convection.

What type of reaction is shown below? CaCl2 (aq) + MgSO4 (aq) - -> CaSO4 (s) + MgCl2 (aq)

True or False. Solutions for which water is the solvent are called aqueous solutions.

Consider the two electron arrangements for neutral atoms A and B. What is the difference between atom A and atom B? A - 1s22s22p63s1 B - 1s22s22p65s1 Atom B has lost some inner electrons.

Choose all the answers that apply. Which of the following has kinetic energy? rolling ball, moving car, book on a table, spinning top, or a falling tree.

Which of the following statements about the suns feature is true?

Preteins vary widely in structure, whereas nucleic acids have rather uniform structures. How do you account for this major difference?

Convert the pressure 0.840 atm to mm Hg