Weegy: The change in pitch of a train's horn as it passes while you are standing still can be explained by the DOPPLER EFFECT. User: the longest wavelength within the visible spectrum is ____ light.\ Weegy: The longest wavelength within the visible spectrum is red light. User: The temperature in a room is 56c. What would the velocity of a sound wave be at this temperature? Weegy: The velocity of a sound wave at 56 C would be 364.6 Hz. Solution: v 331.4 + 0.6 (56); v 365 m/s. User: Your boss asks you to compare two sound waves and determine which has the higher frequency. Wave A has a period of 4/100 second and wave B has a period of 1/7 second. What would you tell your boss? Weegy: Frequency = 1/ T ,Wave A frequency =1/ 4/100 = 100/ 4 = 25 Hz, Wave B frequency = 1/ 1/7 = 7/1 = 7 Hz. Wave A has the higher frequency. Its frequency is 25 Hz. User: Which of the following is not a characteristic of electromagnetic light waves? Weegy: They can travel at various speeds through any one material. -is not a characteristic of electromagnetic waves. User: If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time? (More)

Weegy: If you find that a substance turns litmus paper to blue and contains hydroxide ions, it is most likely: a BASE. User: what is the percent composition of sulfur in h2so4 Weegy: 32.7% is the percent composition of sulfur in H2SO4. User: in a nuclear reaction energy is released by the combination of two elements into a new element. this process is an example of Weegy: In a nuclear reaction, energy is released by the combination of two elements into a new element. This process is an example of nuclear fusion. User: the names of the compounds fes, naci, and ai3o2, all end in the suffix Weegy: The names of the compounds FeS, NaCl, NaOH, and Pb(CN)2 all end in the suffix -ide. User: in order to digest food, the human body requires (More)

Weegy: The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons), electron configurations, and recurring chemical properties. User: Which scientist first attempted to construct a periodic table based on an element's atomic mass Weegy: Dmitri Mendeleev: first attempted to construct a periodic table based on an element's atomic mass. User: Which of the following accurately describes acids and bases in regard to ionization Weegy: When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, [ the acidic and basic properties disappear.- accurately describes acids and bases in regard to ionization. ] User: The molecular mass of sodium oxide na2o is Weegy: The molecular mass of sodium oxide (Na2O) is 61.9789 g/mol. User: all of the following elements produce magnetic fields except for Weegy: All the following elements produce magnetic field except for copper. User: Which of the following would not be a reason to create a controlled fusion reactor (More)

Weegy: These elements tend to gain or lose electrons easily. -is not true in regard to noble gases. User: Which of the following elements is sable (More)

Weegy: Adding more protons to a positively charged body until the number of protons matches the number of electrons does not serve as a way to neutralize the charge in a [ body. ] User: A voltage of 9 A flows through an electric device with a resistance of 43 ohms. What must be the applied voltage in this particular circuit Weegy: A current of 9 amps flows through an electric device with a resistance of 43 ohm. The applied voltage in the particular circuit is 387 volts. ; V =IR ; V = 9 * 43 = 387 volts. User: Magnet A doesn't have its poles labeled, but Magnet B has a clearly labeled north and south pole. If these two are brought into contact with one another, which of the following could you expect? (More)