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pogonyaev
4 years ago
5

Why is output voltage from a transformer zero if the current in the primary coil is a direct current?

Physics
1 answer:
snow_tiger [21]4 years ago
8 0
Explain why the output voltage from a transformer<span> is </span>zero if<span> a </span>direct current<span> flow through the </span>primary coil<span>. Only an alternating </span>current<span> induces the </span>voltage<span> in the</span>transformer<span>. ... Alternating </span>current<span> is used because </span>transformers<span> can increase or decrease </span>voltage<span>.</span>
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What is the relationship between mass and weight in physics?
Alex_Xolod [135]

We are aware that weight is the product of applied gravitational force and mass. W = MG thus, where W represents the weight, M the mass, and G the gravitational force. As a result, it might also mean that "an object's weight is directly proportionate to its mass."

<h3>What is mass?</h3>
  • Mass is a physical body's total amount of matter.
  • It also serves as a gauge for the body's inertia, or resistance to acceleration (change in velocity) in the presence of a net force.
  • The strength of an object's gravitational pull to other bodies is also influenced by its mass.
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<h3>What is weight?</h3>
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Learn more about mass here:

brainly.com/question/19694949

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7 0
2 years ago
In a choir practice room, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the
ololo11 [35]

Answer:

4.98 m

Explanation:

Given that

Width of the mirror, d = 0.6 m

Organist distance to the mirror, s = 0.78 m

Distance between the singer and the organist, S = 5.7 + 0.78 = 6.48 m

Width of north wall, D?

Using the simple relationship

D/S = d/s, on rearranging

D = dS /s

D = (0.6 * 6.48) / 0.78

D = 3.888 / 0.78

D = 4.98 m

Therefore, we can conclude that the Width of north wall is 4.98 m

7 0
3 years ago
Un cuerpo suspendido en el aire es capaz de:
Rama09 [41]

Answer:

Explanation:

d

5 0
3 years ago
A book is sitting on a desk. What best describes the normal force acting on the book?
hjlf

Answer:

umm im not sure

3 0
3 years ago
An airplane flying at an altitude of 6 miles passes directly over a radar antenna. When the airplane is 10 miles away (s = 10),
Novosadov [1.4K]

Answer:

Explanation:

Given

altitude of the Plane h=6\ miles

When Airplane is s=10\ miles away

Distance is changing at the rate of \frac{\mathrm{d} s}{\mathrm{d} t}=290\ mph

From diagram we can write as

h^2+x^2=s^2

differentiate above equation w.r.t time

2h\frac{\mathrm{d} h}{\mathrm{d} t}+2x\frac{\mathrm{d} x}{\mathrm{d} t}=2s\frac{\mathrm{d} s}{\mathrm{d} t}

as altitude is not changing therefore \frac{\mathrm{d} h}{\mathrm{d} t}=0

0+x\frac{\mathrm{d} x}{\mathrm{d} t}=s\frac{\mathrm{d} s}{\mathrm{d} t}

at s=10\ miles\ and\ h=6\ miles

substitute the value we get x=\sqrt{10^2-6^2}=8\ miles

8\times \frac{\mathrm{d} x}{\mathrm{d} t}=10\times 290

\frac{\mathrm{d} x}{\mathrm{d} t}=362.5\ mph

5 0
4 years ago
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