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Mrrafil [7]
3 years ago
11

Technician A says that a 12-volt battery has six cells. Technician B says that the more plates a cell in a battery has, the more

voltage it creates. Who is correct? Technician A Technician B Both Technician A and Technician B Neither Technician A nor Technician B
Physics
2 answers:
Zinaida [17]3 years ago
7 0

Answer: Only technician A.

Explanation:

A 12 volt battery has 6 cells, where each cell produces around 2 volts.

Now, a battery cell has two sets of plates (or two main plates), one set of negative charged plates and other of positive charged plates, separated by an insulating material. Those plates are related to the amount of energy that can be stored by the battery, not with the voltage it has.

So the only one correct is technician A.

Stells [14]3 years ago
6 0

Answer:Technician A

Explanation:

Technician A is right as a 12 v battery contains 6 cells of 2.2 volts and

The size of the battery plates and amount of electrolyte decides the amount of charge lead acid batteries can store for example thus more plates a cell does not mean more voltage it creates.

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For a given velocity of projection in a projectile motion, the maximum horizontal distance is possible only at ө = 45°. Substant
myrzilka [38]

First let us imagine the projectile launched at initial velocity V and at angle θ relative to the horizontal. (ignore wind resistance)

Vertical component y:

The initial vertical velocity is given as Vsinθ
The moment the projectile reaches the maximum height of h, the vertical velocity will be 0, therefore the time t taken to attain this maximum height is:

h = Vsinθ - gt
0 = Vsinθ - gt
t = (Vsinθ)/g

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Horizontal component x:
The initial horizontal velocity is given as Vcosθ. However unlike the vertical component, this horizontal velocity remains constant because this is unaffected by gravity. The time to travel the horizontal distance D is twice the value of t times the horizontal velocity.
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In order for D (horizontal distance) to be maximum, dD/dθ = 0
That is,

2V^2 cos2θ / g = 0
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6 0
3 years ago
A 65.8-kg person throws a 0.0413 kg snowball forward with a ground speed of 32.5 m/s. A second person, with a mass of 58.7 kg, c
guapka [62]

Answer:

v_{1} = 2.490\,\frac{m}{s}

v_{2} = 0.023\,\frac{m}{s}

Explanation:

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First Person

(65.8\,kg)\cdot (2.51\,\frac{m}{s}) = (65.8\,kg)\cdot v_{1} + (0.0413\,kg)\cdot (32.5\,\frac{m}{s} )

Second Person

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The final velocities of the two people after the snowball is exchanged is:

v_{1} = 2.490\,\frac{m}{s}

v_{2} = 0.023\,\frac{m}{s}

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