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3 years ago

Which would not increase voltage and generate an electrical current?

Physics

2 answers:

Jet001 [13]3 years ago

7 0

Answer: The correct answer is a thick wire.

Explanation:

In the given options of the problem, a car battery is needed to generate an electrical current. It forces the electrons to flow. It makes the current flow in the circuit.

Solar cell is a device which converts the solar energy into the electrical energy. It can increase the voltage and generate an electrical current.

Generator is a device which converts the mechanical energy into the electrical energy. It can increase the voltage and generate an electrical current.

A thick wire is not used to increase voltage and generate an electrical current. The thick wire has low resistance in comparison to the thin wire.

Therefore, the correct option is (B).

alex41 [277]3 years ago

4 0

B. A thick wire
I think this is right, hope this helps

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What happens to the Connecticut Energy of a snowball as it rolls across the lawn and gains mass?

statuscvo [17]

I think it will go down like decrease minus or whatever you call it

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4 years ago

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lakkis [162]

Answer:

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3 years ago

If a ball is thrown vertically upward from the roof of 32 foot building with a velocity of 64 ft/sec, its height after t seconds

stepan [7]

Answer:

a) $s_{max} = 96\,ft$ , b) $v(4.449\,s) = -78.368\,\frac{ft}{s}$

Explanation:

a) The maximum height is obtained with the help of the First and Second Derivative Tests:

First Derivative

$v(t) = 64 - 32\cdot t$

$64 - 32\cdot t = 0$

$t = 2\,s$

Second Derivative

$a(t) = -32$ (absolute maximum)

The maximum height reached by the ball is:

$s (2\,s) = 32 + 64\cdot (2\,s) - 16\cdot (2\,s)^{2}$

$s_{max} = 96\,ft$

b) The time required by the ball to hit the ground is:

$32+64\cdot t - 16\cdot t^{2} = 0$

$-16\cdot (t^{2}-4\cdot t - 2) = 0$

$t^{2}-4\cdot t - 2 = 0$

$(t -4.449)\cdot (t+0.449)\approx 0$

Just one root offers a solution that is physically reasonable:

$t = 4.449\,s$

The velocity of the ball when it hits the ground is:

$v(4.449\,s) = 64 - 32\cdot (4.449\,s)$

$v(4.449\,s) = -78.368\,\frac{ft}{s}$

6 0

3 years ago

Read 2 more answers

How does the search for exoplanets help us describe how science requires creativity?

Aliun [14]

Answer:

As the planets are very small and dark in comparison with stars, it makes them very hard to be found from earth.

Explanation:

Astronomy, of course, has a solution for this. As astronomers can't observe planets directly, they decided to observe the stars and search for the effects that planets have on them.

There are many ways of observing the exoplanets: Radial Velocity, Transit Photometry, Microlensing, Astrometry, Direct Imaging, etc.

Before all of this, scientist had to find ways to prove their theories. Most of their time they have spent in giving the creative answers.

Science and creativity are very much connected when we speak about the development of science. Rationality and creativity always go together.

In order to create an idea that other people will consider useful, it is important to use creativity. As no one has the exact answer when it comes to science, the adventure is to research the unknown.

5 0

3 years ago

A Fleas can jump up a distance as large as 33 cm horizontally in a single leap (they are only 0.3 mm in size!). What is their la

Alex Ar [27]

Answer:

Launch velocity of the fleas = 1.80 m/s

Explanation:

Optimal launch angle is the angle that guarantees the maximum horizontal distance covered.

Optimum launch angle = 45°

The horizontal distance covered by a projectile is given as Range

R = (u² sin 2θ)/g

u = initial velocity of the projectile (flea) = ?

R = range = 33 cm = 0.33 m

θ = 45°

2θ = 2 × 45° = 90°

Sin 90° = 1

g = acceleration due to gravity = 9.8 m/s²

R = (u²/g)

u² = Rg = 0.33 × 9.8 = 3.234

u = 1.80 m/s

Hope this helps!!!

7 0

3 years ago