Sound travels more quickly through solids than through liquids and gases because the molecules of a solid are closer together and, therefore, can transmit the vibrations (energy) faster. Sound travels most slowly through gases because the molecules of a gas are farthest apart.
Answer:
(3) 53°
Explanation:
We want to measure the angle that the rains form with the vertical wind shield, so we have to measure the angle relative to the vertical. This means that we can write the following equation
where
is the speed of the rain, which travels vertically
is the speed of the bus, which travels horizontally
Substituting, we find
Answer: C. the rod gains mass and the fur loses mass.
Explanation:Atomic particles have mass. The electron has a mass that is approximately 1/1836 that of the proton and with exchange exchange of charge this is also factored in. The movement of effect described above is known as the triboelectic charging process—charging by friction—which results in a transfer of electrons between the two objects when they are rubbed together. Plastic having a much greater affinity for electrons than animal fur pulls electrons from the atoms of fur, leaving both objects with an imbalance of charge. The plastic rod would have an excess of electrons and the fur has a shortage of electrons. Having an excess of electrons, the plastic is charged negatively and has more mass. In the same vein, the shortage of electrons on the fur leaves it with a positive charge and consequently with lesser mass.
Answer:
Explanation:
We know that the volume of the material
= mass/density
mass= 360 Kg
density = 1450 kg/m^3
Volume= 360/1450= 0.248 m^3
and Volume = Area× equivalent Diameter
Area= 1200 m^2
⇒Equivalent Diameter= Volume/Area= 0.248/1200=
Шада и я тебя понимаю с чего начать с того ни другого человека дал в долг у меня в здоровье
