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3 years ago

In A. C. motor capacitor is used

Physics

1 answer:

natita [175]3 years ago

4 0

Answer:

d. to decrease D. C.

Explanation:

d. to decrease D. C.

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A "gauge 8" jumper cable has a diameter d of 0.326 centimeters. The cable carries a current I of 30.0 amperes. The electric fiel

AveGali [126]

Answer:

0.0979 N/c

Explanation:

Electric field, E is given as a product of resistivity and current density

E=jP where P is resistivity and j is current density

But the current density is given as

$j=\frac {I}{A}$ where I is current and A is area and $A=\pi r^{2}$

Substituting this into the first equation then $E=P\times \frac {I}{\pi r^{2}}$

Given diameter of 0.259 cm= 0.00259 m and the radius will be half of it which is 0.001295 m

$E=1.72\times 10^{-8}\times \frac {30}{\pi \times 0.001295^{2}}=9.79\times 10^{-2} N/c=0.0979 N/c$

4 0

3 years ago

A child tugs on a rope attached to a 0.62 kg toy with a horizontal force of 16.3 N. A puppy pulls the toy in the opposite direct

sattari [20]

Answer:

$a=51.77\ m/s^2$

Explanation:

Given that,

The mass of a toy, m = 0.62 kg

Force with which a child pull the toy = 16.3 N

The force with which the toy pulled in the opposite direction = -15.8 N

We need to find the acceleration of the toy. Let F be the net force acting on the toy. It is equal to :

F = 16.3 N - (-15.8 N)

= 32.1 N

Let a be the acceleration of the toy. Using Newton' second law of motion to find it.

F = ma

$a=\dfrac{F}{m}\\\\a=\dfrac{32.1}{0.62}\\\\a=51.77\ m/s^2$

So, the acceleration of the toy is $51.77\ m/s^2$ .

5 0

3 years ago

when an object slides over a smooth horizontal surface, how does the force of friction depend on the surface area of blocks that

Marina CMI [18]

Answer: with a greater surface area, there will be a greater force of friction

Explanation:

6 0

3 years ago

An element with 1 valence electron has a charge of

ziro4ka [17]

<span>An element with 1 valence electron has a charge of -1, because there is an extra negatively charged electron attached to the ion.</span>

6 0

4 years ago

Which of the following is not a common property of basesp

Hatshy [7]

Explanation:

Bases taste bitter, feel slippery, and conduct electricity when dissolved in water. Indicator compounds such as litmus can be used to detect bases. Bases turn red litmus paper blue. The strength of bases is measured on the pH scale.

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4 years ago