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yawa3891 [41]
3 years ago
12

A _ increases it decreases voltage in a power line

Physics
1 answer:
Levart [38]3 years ago
5 0
A transformer increases and decreases voltage.
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Knowing the definition of work as used by physicists, how can the work done on an object be equal to zero? a. The force and dist
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C

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Work is the product of force and distance moved in the direction of force . if no distance, no work is done. Holding a heavy object still means no work is done

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The square plates of a 3000-pF parallel-plate capacitor measure 40 mm by 40 mm and are separated by a dielectric that is 0.29 mm
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The square plates of a 3000-pF parallel-plate capacitor measure 40 mm by 40 mm and are separated by a dielectric that is 0.29 mm thick and completely fills teh region between the plates.

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Suppose that the speed of a ball moving in a horizontal circle is increasing at a steady rate. Is this increase in speed produce
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No.

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Asbestos, HPV, chemicals found in tobacco smoke, and exposure to radioactivity and UV radiation are causes of
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The BT chemicals in the polymers of the UV radiation and asbestos

8 0
3 years ago
Water at 20oC flows through a long elliptical duct 30 cm wide and 22 cm high. What average velocity, in m/s, would cause the wei
mars1129 [50]

Explanation:

The given data is as follows.

   Fluid is water so, density \rho = 1000 kg/m^{3}

  Weight flow rate = 500 lbf/s = 2224.11 N/sec

  Cross-sectional area (A) = \pi \times \frac{30}{2} \times \frac{22}{2}

                                         = 0.05184 m^{2}

Hence, weight flow rate will be given as follows.

        w = \rho \times g \times A \times V

    2224.11 N/sec = \rho \times g \times A \times V

        V = \frac{2224.11}{1000 \times 9.81 \times 0.05184} m/s

            = 4.373 m/s

Thus, we can conclude that average velocity in the given case is 4.373 m/s.

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3 years ago
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