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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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An 80 g, 40 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 15 g ball of clay trav
fiasKO [112]

Answer:

θ  = 12.95º

Explanation:

For this exercise it is best to separate the process into two parts, one where they collide and another where the system moves altar the maximum height

Let's start by finding the speed of the bar plus clay ball system, using amount of momentum

The mass of the bar (M = 0.080 kg) and the mass of the clay ball (m = 0.015 kg) with speed (v₀ = 2.0 m / s)

Initial before the crash

      p₀ = m v₀

Final after the crash before starting the movement

     p_{f} = (m + M) v

     p₀ = p_{f}

     m v₀ = (m + M) v

     v = v₀ m / (m + M)

     v = 2.0 0.015 / (0.015 +0.080)

     v = 0.316 m / s

With this speed the clay plus bar system comes out, let's use the concept of conservation of mechanical energy

Lower

    Em₀ = K = ½ (m + M) v²

Higher

    E_{mf} = U = (m + M) g y

   Em₀ = E_{mf}

   ½ (m + M) v² = (m + M) g y

   y = ½ v² / g

   y = ½ 0.316² / 9.8

   y = 0.00509 m

Let's look for the angle the height from the pivot point is

    L = 0.40 / 2 = 0.20 cm

The distance that went up is

     y = L - L cos θ

     cos θ  = (L-y) / L

     θ  = cos⁻¹ (L-y) / L

     θ  = cos⁻¹-1 ((0.20 - 0.00509) /0.20)

      θ  = 12.95º

4 0
3 years ago
Shante makes a diagram to compare the effects of short-term and long-term environmental changes. Which statement should she plac
irinina [24]
Answer: affect organisms
hope this helps you out .
5 0
3 years ago
Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 1.38 m and finds that it makes 441
Tasya [4]
The period of a simple pendulum is given by:
T=2 \pi  \sqrt{ \frac{L}{g} }
where L is the pendulum length, and g is the gravitational acceleration of the planet. Re-arranging the formula, we get:
g= \frac{4 \pi^2}{T^2}L (1)

We already know the length of the pendulum, L=1.38 m, however we need to find its period of oscillation.

We know it makes N=441 oscillations in t=1090 s, therefore its frequency is
f= \frac{N}{t}= \frac{441}{1090 s}=0.40 Hz
And its period is the reciprocal of its frequency:
T= \frac{1}{f}= \frac{1}{0.40 Hz}=2.47 s

So now we can use eq.(1) to find the gravitational acceleration of the planet:
g= \frac{4 \pi^2}{T^2}L =  \frac{4 \pi^2}{(2.47 s)^2} (1.38 m) =8.92 m/s^2
3 0
3 years ago
Why is it helpful to study the light that comes off stars?
asambeis [7]
 It is helpful to study the light that comes off stars because C. The light from a star gives hints of what elements make up a star.
6 0
3 years ago
PLEASE HELP!! I’ll give brainliest pls
marin [14]

Answer:

A

Explanation:

houses use alternating current source

6 0
2 years ago
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