Which is an example of a chemical change?
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
Answer:
F = 7 N
Explanation:
given,
mass of sled = 17.5 Kg
speed of snow on horizontal surface = 3.5 m/s
time taken to stop = 8.75 s
initial momentum
= m U
= 17.5 x 3.5 = 61.25 Kg.m/s
final momentum
final velocity = 0 m/s
final momentum = 0
impulse = change in momentum
impulse = force x time
equating both the formula of impluse
F x t = 61.25 - 0
F x 8.75 = 61.25
F = 7 N
Force acting on the moving sled is equal to F = 7 N
The right answer is B because a liquid can take the shape of anything its in but it has the same volume
Answer:
Immunization, or immunisation, is the process by which an individual's immune system becomes fortified against an infectious agent.
Explanation:
<em>HOPE</em><em> </em><em>IT</em><em> </em><em>HELPS</em><em> </em>
<em>HAVE</em><em> </em><em>A</em><em> </em><em>NICE</em><em> </em><em>DAY</em><em> </em><em>:)</em><em> </em>
<em>XXITZFLIRTYQUEENXX</em><em> </em>
