Answer:
5.71 m/s ;
20 m/s
Explanation:
Blue car:
At time, t = 0 ; Initial position = 20 m
Final position, = 60m after 4 seconds
The velocity = change in distance / change in time.
Velocity of blue = (60 - 20)m ÷ ((4 + 3) - 0),
Velocity of blue car = 40 / 7
= 5.71 m/s
Red car:
Initial Position = 0 ; final Position = 60
Time taken = 3 seconds
Velocity of Red car = (60 - 0)m ÷ 3
Velocity of Red car = 60 / 3
= 20 m/s
When you say atmospheric pressure it is a standard on all places on earth. The value of standard atmospheric pressure is 1 Bar approximately or 14.7 lb per square inch. This pressure is an attribute of free molecules on the air which is not bound the accumulation of the pressure of this in average is the atmospheric pressure.
Answer:
The buoyant force on the piece of iron is 3.5 newtons.
Explanation:
According to the Archimedes' Principle, the piece of metal experiments a buoyant force equal to the weight of the displaced fluid. By Newton's Laws, we have the following formula:
(1)
Where:
- Buoyant force on the piece of iron, in newtons.
- Weight of the piece of metal, in newtons.
- Weight of the fluid displaced by the piece of metal, in newtons.
If we know that 
and 
, then the buoyant force on the piece of iron is:
The buoyant force on the piece of iron is 3.5 newtons.
Answer:
Yes, it can be destroyed.The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.
Explanation:
hope this helps
Answer:
0.15m i tink blablablablabla
