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2 years ago

Progress of science has not caused any ill effect true or false?

Physics

1 answer:

algol [13]2 years ago

5 0

False due to certain experiments and materials that are now used / were used such as plastic

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The Capacitive reactance of a 0.094uF capacitor when a frequency of 25kHz is applied is lus 68 Ohms 0.68 Ohms luf

Nana76 [90]

Answer:

Capacitive reactance of the capacitor is 68 ohms

Explanation:

It is given that,

Capacitance, $C=0.094\ \mu F=0.094\times 10^{-6}\ F$

Frequency, $f=25\ kHz=25\times 10^3\ Hz$

Capacitive reactance is given by :

$X_C=\dfrac{1}{2\pi fC}$

$X_C=\dfrac{1}{2\pi 25\times 10^3\times 0.094\times 10^{-6}}$

$X_C=67.72\ \Omega$

$X_C=68\ \Omega$

So, the capacitive reactance of the capacitor is 68 ohms. Hence, this is the required solution.

8 0

3 years ago

The force of replusion between two like charged particles will increase if

Alex_Xolod [135]

Answer:

The distance of separation is decreased

Explanation:

From Cuolomb's law, we know that the strength of charge is inversely proportional to the distance of separation between the charges. To mean that increasing the distance let's say from 2m to 3 m would mean initial strength getting form 1/4 to 1/9 which is a decrease. The vice versa is true hence the force of repulsion can increase only when we decrease the distance of separation.

7 0

3 years ago

Two 100kg bumper cars are moving towards eachother in oppisite directions. Car A is moving at 8 m/s and Car B at -10 m/s when th

DerKrebs [107]

Answer:

$-10 m/s$

Explanation:

When two cars collide then the momentum of two cars will remains conserved

Mass of two cars = 100 kg

Speed of car A = 8 m/s

Speed of car B = - 10 m/s

After collision the speed of car B = +8 m/s

By momentum conservation equation

$m1v1i+m2v2i=m1v1f + m2v2f$

$(100)(8)+(100)(-10)=(100v)+(100)(8)\\ v=-10 m/s$

7 0

3 years ago

Which one of the following statements does not accurately describe the diatonic scale as it corresponds to the setup on a piano

Gekata [30.6K]

<span>The answer is C. A scale would include a series of eight notes, where the first and seventh notes have the same letter.

Just took the test. Got 100%
</span>

8 0

3 years ago

Read 2 more answers

If the air becomes ionized (and hence electrically conducting) when the electric field exceeds 2.92×106 v/m , what is the minimu

ipn [44]

The minimum separation the plates can have is 6729 without ionizing the aje

3 0

4 years ago

Progress of science has not caused any ill effect true or false?​

Progress of science has not caused any ill effect true or false?