Solids, liquids, gases - all matter - are made up of atoms (or other things, like molecules, that are made from atoms)! ELEMENTS are the kinds of atoms that we can have. Carbon is an element, hydrogen is an element, and so is oxygen.
so it is c hope this helps
A thing the question doesn't tell us: What direction is Mr. B walking ?
-- If Passenger B is walking West, in the same direction as the moving walkway, then the stationary observer sees him passing by toward the West at 3.5 km/hr.
-- If Passenger B, for some strange reason, is walking BACKWARDS, heading east on the moving walkway, then the stationary observer sees him passing by toward the EAST, at 0.5 Km/hr.
-- We're wondering why the question ever introduced us to Passenger-A. He never figures into the question in any way. He has no effect on Passenger-B, and we never hear from him again.
Answer is 1500 m/s
Wave speed = Frequency x wavelength
500.0 x 3.00 = 1500 m/s
Answer:
Explanation:
In this way we understand that the condition for destructive interference is
The smallest non zero thickness is,
At
At
The coefficient of linear expansion is
Wegener thought that the continents were moving through the earth's crust, like icebreakers plowing through ice sheets, and that centrifugal and tidal forces were responsible for moving the continents.
On top of that, Wegener learned that related species, too small to swim the oceans, were found on different continents, as were similar fossils. ... The year after Wegener died, Arthur Holmes published his idea that thermal convection in the earth's mantle could cause continents to move.