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vivado [14]
3 years ago
11

When the power goes off, Jack does not have a flashlight so he uses a glow stick to provide light. He is not very satisfied with

how long the glow stick lasts. Which idea is the most likely to improve the longevity of the glow stick?
A) Only increase the volume of the activator solution cell.
B) Enlarge the overall size and volume within the glow stick.
C) Include a slow release activator phase to the main solution.
D) Increase the concentration both the main and activator phases.
Physics
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

C) Include a slow release activator phase to the main solution

Explanation;

Adding a slow release activator phase to the main solution can reduce the rate of chemical reaction in the glow stick producing a glow sticks that will glow dimly for an extended length of time.

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Determine the magnitude of the current flowing through a 4.7 kilo ohms resistor if the voltage across it is (a) 1mV (b) 10 V (c)
mariarad [96]

Answer:

213 nA

2.13 mA

851e^-t μA

Explanation:

We have a pretty straightforward question here.

Ohms Law states that the current in an electric circuit is directly proportional to the voltage and inversely proportional to the resistance in the circuit. It is mathematically written as

V = IR, since we need I, we can write that

I = V/R

a) at V = 1 mV

I = (1 * 10^-3) / 4.7 * 10^3

I = 2.13 * 10^-7 A or 213 nA

b) at V = 10 V

I = 10 / 4.7 * 10^3

I = 0.00213 A or 2.13 mA

c) at V = 4e^-t

I = 4e^-t / 4.7 * 10^3

I = 0.000851e^-t A or 851e^-t μA

5 0
2 years ago
What does a lunar eclipse and a solar eclipse have in common
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3 0
3 years ago
What would we need to do to make an electromagnet strong enough to move cars and trains
SVEN [57.7K]

Answer:

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Explain why the amplitude of the wave did not change when you increased the frequency of the stimulation. how well did the resul
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Which particle is most likely to interact with your hand? Select one: a. Alpha particle b. Beta particle c. Gamma particle d. Ne
IgorLugansk [536]

Answer:

The correct option is a

Explanation:

The alpha particle has the lowest penetrating power of the trio of alpha, beta and gamma particles and can be stopped by a sheet of paper and hence cannot penetrate a human skin. Beta particle has a higher penetrating power than alpha particle (some of it penetrates the human skin and some do not) while the gamma particle has the highest penetrating power (with all of it penetrating the human skin).

From the above description, it can be deduced that the alpha particle will stay and interact with the hand (because of its low penetrating power) as the remaining particles move through the skin.

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