Answer:
The number of half-lives that have occurred are 4.
Explanation:
Formula used for number of half lives :

where,
a = amount of reactant left after n-half lives
= Initial amount of the reactant
n = number of half lives



n = 4
The number of half-lives that have occurred are 4.
Following are the correct options:
Melting
The molecules gain energy and break the bonds between them which causes a transition from solid to liquid
sublimation
A substance gain energy and changes from solid to gas.
vaporization
The atoms gain energy and the matter changes its state from liquid to gas.
In a bedridden patient recovering from a badly fractured femur, disuse atrophy in the thigh muscles is caused by <span>decreased synthesis of muscle proteins and/or increased breakdown of muscle proteins. Muscle tissue grows and heals in response to stress. Without the stress of exercise and normal daily activities, muscle tissue degenerates</span>
Answer:
Please find the answer in the explanation
Explanation:
Given that A 1.0 g plastic bead, with a charge of -6.0 nC, is suspended between the two plates by the force of the electric field between them.
Since it is suspended, it must have been repelled by the bottom negative plate and trying to be attracted to the top plate.
We can therefore conclude that the upper plate, is positively charged
B.) The charge on the positive plate of parallel-plate capacitor is constructed of two horizontal 12.0-cm-diameter circular plates must be less than 6.0 nC