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nexus9112 [7]
3 years ago
8

Flow of electrical current in a wire is analogous to the flow of water in a pipe. True False

Physics
2 answers:
NNADVOKAT [17]3 years ago
7 0

Answer:

false

Explanation:

slavikrds [6]3 years ago
3 0

Answer:

TRUE

In a wire, negatively charged electrons move, and positively charged atoms don't. Electrical engineers say that, in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal.

A lot of people think of electron flow as electrons moving along a wire freely like cars go down a highway.

Explanation:

You might be interested in
Line d represents water. if the atmospheric pressure in a flask is lowered to 70 kpa, water would boil at what temperature?
sp2606 [1]
The diagram is in the picture attached.
Options are:
A) 32 °C
B) 70 °C
C) 92 °C
D) 100 °C

In order to find the value required, you need to look at the diagram and follow these steps:
1) search for the value of 70 kPa on the y-axis;
2) move on a horizontal line towards the right until you reach the line D;
3) move on a vertical line down, towards the x-axis;
4) read at what value of °C you are at.

Doing so, you can see that you are at a value a little bit above 90 °C (see picture).

Hence, the correct answer is C) 92°C.

5 0
3 years ago
A car covers 400m distance in 50 sec find it's speed?
Lena [83]

Answer:

\boxed {\boxed {\sf 8 \ m/s}}

Explanation:

Speed is equal to distance over time.

s=\frac{d}{t}

The distance is 400 meters and the time is 50 seconds.

d= 400 \ m \\t= 50 \ s

Substitute the values into the formula.

s=\frac { 400 \ m }{ 50 \ s}

Divide.

s= 8 \ m/s

The speed of the car is 8 meters per second.

4 0
3 years ago
An object is dropped from the top of a tall building. At 2 seconds, it is 64 feet from the top of the building. At 4 seconds, it
jeka94

Answer:

96.21 ft/s

Explanation:

To solve this, you only need to use one expression which is:

Vf² = Vo² + 2gh

g = 9.8 m/s²

However, this exercise is talking in feet, so convert the gravity to feet first:

g = 9.8 * 3.28 = 32.15 ft/s²

Vo is zero, because it's a free fall and in free fall the innitial speed is always zero. With this, let's calculate the speed at 2 seconds, with a height of 64 ft, and then with the 256 ft:

V1 = √2*32.15*64

V1 = 64.15 ft/s

V2 = √2*32.15*256

V2 = 128.3 ft/s

So the average rate is:

V = 128.3 + 64.15 / 2

V = 96.22 ft/s

6 0
3 years ago
I understand what makes a kettle so efficient, but what are some improvements you can make to a kettle to increase it’s energy e
shusha [124]

Answer:

Reheat the cold cup of tea or coffee in the microwave. ...

Make iced tea or coffee with what's left. ...

Use a thermos for either tea or coffee.

3 0
3 years ago
If a 50kg man climed a 5m ladder on the moon how much would the gpe be on earth
Crazy boy [7]

Explanation:

Since, the gravity in moon is 1/6th that of earth.

Therefore,

5m ladder if climed on moon will be equal to 1/6th that on earth .i.e 5×1/6=0.83m

5 0
3 years ago
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