Answer:
When substances made of iron are exposed to oxygen and moisture (water), rusting takes place. Rusting removes a layer of material from the surface and makes the substance weak. Rusting is a chemical change.
Answer:
Explanation:
If dropped from a position of rest, the object will be traveling 9.8 m/s (approximately 10 m/s) at the end of the first second, 19.6 m/s (approximately 20 m/s) at the end of the second second, 29.4 m/s (approximately 30 m/s) at the end of the third second
Answer:
"332.8 m/s" is the right solution.
Explanation:
The given values are:
Wavelength,
Frequency,
As we know,
⇒ 
or,
⇒ 
By putting the given values in the above relation, we get
⇒ 
⇒ 
Answer:
This is what you know: Force= 3150N
Distance= 75.5m
This is what you need to find: Work(W)
Use this formula: W=Fd
W= (3150N) × (75.5m)=237,825 Joules (J)
<span>They deliver oxygen to the blood.
For the regular body activities to be carried out.
Acid-base balance or body temperature control.</span>
