Why are scientific theories modified, but seldom discarded?

A 16-Ω loudspeaker, an 8.0-Ω loudspeaker, and a 4.0-Ω loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors.

Avogadro's law and charles's law describe a proportionality of the volume of a gas when the pressure is constant. Describe the proportionality that allows these laws to be combined when describing a gas?

11. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? A. Refracting B. Absorption C. Focusing D. Diffusion

A steam turbine operates with 1.6 MPa and 350°C steam at its inlet and saturated vapor at 30°C at its exit. The mass flow rate of the steam is 22 kg/s, and the turbine produces 12,350 kW of power.

Human diseases such as tetanus syphilis and cholera are caused by small cells that lack nucleus the cells can enter the human body and cause disease. Which common name is associated with these cells. A antibody B toxin C bacteria D virus

Which action is caused by gravity? a frost wedging b aeolian bands c mass wasting d glaciation

A light beam is directed parallel to the axis of a hollow cylindrical tube. When the tube contains only air, the light takes 8.72 ns to travel the length of the tube, but when the tube is filled with a transparent jelly, the light takes 1.

Neon, helium, methane, krypton, xenon, hydrogen, and ozone make up & what of the atmosphere

The element in an incandescent light bulb that releases light energy is

Would you expect a hammer and a feather to land on the surface of the moon at the same time