Answer:
.team 1 a = 20.8 m/s² team 2 a = 19.2 m/s²
Explanation:
Let's use Newton's second law to calculate the acceleration of the two groups
F = ma
a = F / M
Group 1
a = 9 1354/9 65
a = 20.8 m / s²
Group 2
a = 9 1364/9 71
a = 19.2 m / s²
If the two groups pull against each other, group 1 should win, by creating a greater acceleration.
Δa = 20.8 -19.2
Δa = 1.6 m / s²
Answer:
Explanation:
The centripetal acceleration requirement must equal gravity at the top of the circle
mg = mv²/R
v = √Rg
v = √(1.0(9.8))
v = 3.1304951...
v = 3.1 m/s
Answer:
It is said that the negative charge moves because the electrons in the atoms of any object are taken or given to the atoms of another object.
Explanation:
The atom is made up of protons, electrons and neutrons. The number of protons is exactly the same to the number of electrons for a certain element. For example, hydrogen: it has a proton, and therefore, an electron.
The electron has a negative charge. The proton has a positive charge. And the neutron has no charge, so it is neutral. While the atom has the same number of protons and electrons, it will not be electrically charged.
An example of how a charge exchange occurs between two objects is through the case of rubbing. This makes the atoms of the two objects close enough that there is an electron transfer, causing any of the objects to gain or lose electrons as a consequence of each other interaction. In the case of transferring electrons, the atom will have a greater number of protons, so it will be positively charged. When the atom receive electrons, it will have a greater number of electrons, so it will be negatively charged.
Therefore, since it is the electrons that move from one atom to another, then it is the negative charge that moves (<em>characterized by the electrons</em>) and not the positive charge (<em>characterized by the protons</em>).
Newton's second law gives the relationship between force applied to an object, its mass and its acceleration:
where F is the force, m the mass and a the acceleration.
A force F is applied to football A, whose mass is
, and so the acceleration of this football will be given by (re-arranging the previous equation)
Similarly, the acceleration of football B will be
where
is the mass of football B, and where the force F applied to the two footballs is the same.
Since football A has greater mass than football B,
, if we compare the two previous formula we see that the acceleration of football B is greater than the acceleration of football A:
Therefore, if the same force is applied to the two footballs, football B will accelerate more than football A.
