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ehidna [41]
3 years ago
14

Which of the following is a source of direct electric current?

Physics
2 answers:
lbvjy [14]3 years ago
7 0
A source of direct electric current would be a battery. A battery provides a direct electric current - for example, in your iPhone the battery's electric current keeps it running.
Svetllana [295]3 years ago
5 0
Hi , the answer is D , battery.
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A clown at a birthday party has brought along a helium cylinder, with which he intends to fill balloons. When full, each balloon
Furkat [3]

Answer:

11

Explanation:

According to Boyle's law:

P\times V=constant

Thus,

P_{cylinder}\times V_{cylinder}=n\times P_{balloon}\times V_{balloon}

Where, n is the number of the balloons

From the question, it is given that:

For balloon:

P = 1.2\times 10^5 Pa

V = 0.040 m³

For cylinder:

P = 1.80\times 10^7 Pa

V = 0.0031 m³

So,

1.80\times 10^7\times 0.0031=n\times 1.2\times 10^5\times 0.040

n = 11.625

<u>So, Maximum number of balloons = 11</u>

7 0
3 years ago
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melamori03 [73]

Answer:

I not sure I need more info to answer this specific question I'm sorry

6 0
3 years ago
1.Do parallel universe exist? How?
Harlamova29_29 [7]

Answer:

Some physicists believe in a flatter version of multiple universes. ... But if the universe began at a finite point, as nearly every physicist agrees that it did, an alternate version of you likely doesn't exist, according to astrophysicist Ethan Siegel's 2015 Medium article.

7 0
2 years ago
A jetboat is drifting with a speed of 5.0\,\dfrac{\text m}{\text s}5.0 s m ​ 5, point, 0, start fraction, start text, m, end tex
love history [14]

The question is incomplete. Here is the entire question.

A jetboat is drifting with a speed of 5.0m/s when the driver turns on the motor. The motor runs for 6.0s causing a constant leftward acceleration of magnitude 4.0m/s². What is the displacement of the boat over the 6.0 seconds time interval?

Answer: Δx = - 42m

Explanation: The jetboat is moving with an acceleration during the time interval, so it is a <u>linear</u> <u>motion</u> <u>with</u> <u>constant</u> <u>acceleration</u>.

For this "type" of motion, displacement (Δx) can be determined by:

\Delta x = v_{i}.t + \frac{a}{2}.t^{2}

v_{i} is the initial velocity

a is acceleration and can be positive or negative, according to the referential.

For Referential, let's assume rightward is positive.

Calculating displacement:

\Delta x = 5(6) - \frac{4}{2}.6^{2}

\Delta x = 30 - 2.36

\Delta x = - 42

Displacement of the boat for t=6.0s interval is \Delta x = - 42m, i.e., 42 m to the left.

8 0
3 years ago
An object’s
Roman55 [17]

Answer:

Explanation:

An object’s mass will remain constant throughout the universe, but its WEIGHT can change from planet to planet.

If you increase the mass of a planet, what happens to its gravity?

If the radius does not change, Then its gravity increases.

If the gravity on a planet decreases, what happens to the weight of an object on that planet?  Weight decreases.

6 0
3 years ago
Read 2 more answers
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