Answer:
18.94 m/s
Explanation:
The bat becomes the source of sound . Source is moving towards observer
apparent frequency = actual frequency x (V / V - V_s)
V is velocity of sound and V_s is velocity of source or bat.
apparent frequency / actual frequency = V / (V - V_s)
21 / 12 = 340 / (340 - V_s)
1.059(340 - V_s) = 340
340 x .059 = 1.059 V_s
V_s = 18.94 m/s
=
<span>The energy released by an earthquake occurs
in the form of either volcanic eruptions or better yet, seismic waves. There is
no radiation in earthquake except if it destroys nuclear power plants.
Earthquakes are also the reason why long ago, there is a continental drift long
ago wherein <span>seismic,
volcanic, and geothermal activity are found along imagined plate boundaries, the
plates were actually rubbing against
each other as evidence is seen on the formed mountain ranges And there is paleomagnetism,
magnetic field placement in the layers of the rock are present.</span></span>
Answer:
Explanation:
The faster particles move, the more kinetic energy they have. Within a given substance, such as water, particles in the solid state have the least amount of kinetic energy. This is because they only vibrate in place. Particles in the liquid state move faster than particles in the solid state.
Magnets with the same polarity (N-N or S-S) repel one another along the same direction. This agrees to the common rule that like poles repel and unlike poles attract. Hope this answers the question. Have a nice day. Feel free to ask more questions.
Answer:
Antibody molecules that are secreted by plasma cells mediate the humoral immune response. The antigen that binds to the receptor of the B-cell antigen signals B cells and is internalized and transformed into peptides that activate the armed helper at the same time.
Explanation:
