What you need to know is that the force is
F=ma
The force is the product of mass and acceleration
this means that the acceleration is
a=F/m
a) The force is halved?
this means that f will be
![\frac{F}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7BF%7D%7B2%7D%20)
now:
a=
![\frac{F}{2m}](https://tex.z-dn.net/?f=%20%5Cfrac%7BF%7D%7B2m%7D%20)
So the accelaration will also he halved (it's the original acceleratation divided by 2)
b) The object's mass is halved?
a=
![\frac{F}{m/2}](https://tex.z-dn.net/?f=%20%5Cfrac%7BF%7D%7Bm%2F2%7D%20)
=a=
![\frac{F2}{m}](https://tex.z-dn.net/?f=%20%5Cfrac%7BF2%7D%7Bm%7D%20)
which is the original acceleration times two!! so it will double
c) The force and the object's mass are both halved?
now we have
a=
![\frac{F/2}{m/2}](https://tex.z-dn.net/?f=%20%5Cfrac%7BF%2F2%7D%7Bm%2F2%7D%20)
=a=
![\frac{2F}{2m}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2F%7D%7B2m%7D%20)
=a=
![\frac{F}{m}](https://tex.z-dn.net/?f=%20%5Cfrac%7BF%7D%7Bm%7D%20)
so they will cancel each other out and the acceleration will stay the same!
Answer:
Mg- 27 means isotope with 12 protons and 15 neutrons.
Also 27 is mass number which express sum of protons and neutrons.
In nucleus one neutrn decays to electron and proton. Mass number remain same but Al-27 nucleus contain 13 protons and 14 neutrons. Electron is ejected out from nucleus.
a) An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. <u>This is because a positive and negative electric charge is produced, therefore the balloon sticks to the wall.</u>
b) When an object is thrown up, it comes back to ground <u>because of gravitational attraction force of earth</u>.
c) Mountaineers suffer nose bleeding at higher altitudes <u>because the oxygen level decreases with increase in altitude, which the body cannot adjust.</u>
d) Foundations of high rise buildings are kept wide <u>because more is the area of contact, less is the pressure efforts. So, foundations are wide so as to decrease the possibility of the building from falling down.</u>
e) Deep sea divers or high altitude fliers wear special suits <u>so as prevent their body from being crushed by the water pressure. Since water pressure is maximum at deep seas and oceans, therefore, more is the risk of being injured.</u>
f) Walls of a dam are thickened near the base <u>so that the dam can handle the kinetic energy pressure and prevent itself from breaking down, which if not, can lead to flooding</u>.
HOPE IT HELPS...
Answer:
c.Law
Explanation:
i think you must learn and write however good luck