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Stells [14]
2 years ago
10

PLEASEE HELP!!! LOTS OF POINTS AND BRAINLIEST!!!!!!!!

Physics
2 answers:
Dennis_Churaev [7]2 years ago
3 0
A clock and a battery
Dmitriy789 [7]2 years ago
3 0

Answer:

Explanation:

A analog signal requires more energy but i don’t know what digital is please let me know if you found the answer

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What is the difference between Daniel and Leclanché cell
Thepotemich [5.8K]

Explanation:

Leclanche cell : Leclanche cell is also known as dry cells (fig 2). It contains an electrolyte of ammonium chloride. Carbon acts as a cathode while zinc is an anode. 

Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/959247-difference-between-daniel-and-leclanch-cells.htmlDaniel cells: It is a primary cell. It consists of a zinc rod and a copper vessel (in fig 1). It can be seen that a zinc rod is put in dilute sulfuric acid which is contained in a porous pot.   Daniel cell works on the principle of the redox reaction. The electrons pass form zinc rod to wire. Then it passes to the copper rod. Thus, a current is produced.   

Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/959247-difference-between-daniel-and-leclanch-cells.html

3 0
2 years ago
A book on a 2 meter high shelf has 20 Joules of potential energy.
Sever21 [200]
Mass of this book is 1 kg.

4 0
3 years ago
The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A⋅h). A 50 A⋅h
timurjin [86]

Answer:

2.80 MJ  

Explanation:

(a) We want to calculate the energy U of the battery, where its voltage is E = 13.0V and the supplied current is I = 60 A. We can neglect the internal resistance, so the terminal voltage equals the emf of the battery V = 13.0V. The quantity of delivered energy is given by the rate at which energy is delivered to it in a certain time t. We could obtain the rate at which energy is transferred by using equation , where the rate represents the power P = IV. Therefore, the energy produced is given by  

U = P*t                                                (P = IV)            

U = I*V*t                                                                     (1)  

Now we can plug our values for I, V and t into equation (1) to get the energy produced in time t = 1 h = 3600 s  

U = I*V*t = (60 A)(13 V)(3600s) =  2.80 MJ  

5 0
3 years ago
A spherical balloon is inflated with gas at the rate of 500 cubic centimeters per minute. How fast is the radius of the balloon
Nookie1986 [14]

Answer:

<h2>0.245cm/min</h2>

Explanation:

The volume of the spherical balloon is expressed as V = 4/3πr³ where r is the radius of the spherical balloon. If the spherical balloon is inflated with gas at the rate of 500 cubic centimetres per minute then dV/dt = 500cm³.

Using chain rule to express dV/dt;

dV/dt = dV/dr*dr/dt

dr/dt is the rate at which the radius of the gallon is increasing.

From the formula, dV/dr = 3(4/3πr^3-1))

dV/dr = 4πr²

dV/dt = 4πr² *dr/dt

500 =  4πr² *dr/dt

If radius r = 40;

500 = 4π(40)² *dr/dt

500 = 6400π*dr/dt

dr/dt = 500/6400π

dr/dt = 5/64π

dr/dt  = 0.245cm/min

Hence, the radius of the balloon is increasing at the rate of 0.245cm/min

8 0
3 years ago
As an tempature decreases what happens to the rate of radiation?
Firlakuza [10]
As the temperature decreases, the rate of radiation goes down, but the radiation exists as long as the temperature is above the absolute zero, which is actually 0 Kelvin. 0 Kelvin equals -273°C or -460°F. All objects in the world radiate if above that temperature.
5 0
3 years ago
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