Answer:
6.58m
Explanation:
The kinetic energy = Workdone on the roller
Workdone = Force * distance
Given
KE = Workdone = 362J
Force = 55N
Required
Distance
Substitute into the formula;
Workdone = Force * distance
362 = 55d
d = 362/55
d = 6.58m
Hence the student must push at a distance of 6.58m
Answer:
Formation of new elements
Explanation:
The answer is A. Plant growth, Plant growth is the only thing that can actually be tested and scientificly measured, hope this helps!!!!
Answer:
B) Aerosol
The particles from the pigeon droppings are likely to be transmitted from the air vents directly into Martyn's respiratory system
When an object absorbs an amount of energy equal to Q, its temperature raises by
![\Delta T](https://tex.z-dn.net/?f=%5CDelta%20T)
following the formula
![Q=m C_s \Delta T](https://tex.z-dn.net/?f=Q%3Dm%20C_s%20%5CDelta%20T)
where m is the mass of the object and
![C_s](https://tex.z-dn.net/?f=C_s%20)
is the specific heat capacity of the material.
In our problem, we have
![Q=2.44 \cdot 10^3 J](https://tex.z-dn.net/?f=Q%3D2.44%20%5Ccdot%2010%5E3%20J)
,
![m=235.0 g](https://tex.z-dn.net/?f=m%3D235.0%20g)
and
![\Delta T=35 K](https://tex.z-dn.net/?f=%5CDelta%20T%3D35%20K)
, so we can re-arrange the formula and substitute the numbers to find the specific heat capacity of the metal: