In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water particles.
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Answer:
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
"some elements have only one stable isotope"
Explanation:
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Answer:
Described below
Explanation:
When you see a car behind you in the rear view mirror, it means that light rays travelling from the right hand side of the car driver behind are being reflected by the mirror to get to your eyes on the right side of the light rays from the drivers left hand side.
Answer : The density of rock reported should be, 3.1 g/mL
Explanation :
Mass of rock = 18.3 g
Original volume of water = 11.1 mL
New volume of water = 17.0 mL
First we have to calculate the volume of rock.
Volume of rock = New volume of water - Original volume of water
Volume of rock = 17.0 mL - 11.1 mL
Volume of rock = 5.9 mL
Now we have to determine the density of rock.
Formula used :
Thus, the density of rock reported should be, 3.1 g/mL
Answer:
12m/s
Explanation:
v^2=u^2+2as
v=?
u=0 (the dish was stationary before it fell)
a=9.81 m/s^2 (acceleration due to gravity/freefall)
s=1.5m (the drop height)
So: v^2=0+2.9.81.1.5 = 144.35415
and therefore v=sqrt 144.35415
12x12=144 so I'd say v=12m/s
