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4 years ago

As shown in the video, earth has two tidal bulges at all times. approximately where are these bulges located?

1 answer:

4 0

Tidal bulges are always on the opposite side of the Earth.
They are created because of the gravitational influence of the Moon on Earth and inertial's counter balance.

The side of the Earth that is facing the Moon is the closest to the Moon, and the gravitational force is the strongest when the distance is the smallest.

As the Moon is trying to draw the water towards itself, the inertia tries to keep the water at its place. On the opposite side of the Earth, "behind the Moon", the gravitational force of the Moon is the weakest, so inertia is the strongest. That's why tidal bulges are at the opposite side.

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A neighborhood transformer on the top of a utility pole transforms 12.0 kV 60.0 Hz alternating voltage down to 120.0 V to be use

riadik2000 [5.3K]

Answer:

<em>The primary coil has 13,400 turns</em>

Explanation:

<u>Voltage Transformers</u>

A transformer is an electrical apparatus that converts an alternating electrical voltage to another. Step-down transformers lower the voltage from higher levels (kilovolts) to consumer levels (120/240 Volts).

The ratio between both voltages can be computed as

$\displaystyle r=\frac{V_1}{V_2}$

Where V1 is the primary voltage and V2 is the secondary voltage. This ratio depends on the turns ratio of the coils wounded in a common magnetic core.

$\displaystyle r=\frac{N_1}{N_2}$

Being N1 the number of turns of the coils of the primary side and N2 the number of turns in the secondary coil. Both relations give us

$\displaystyle \frac{N_1}{N_2}=\frac{V_1}{V_2}$

Solving for N1

$\displaystyle N_1=\frac{V_1}{V_2}\cdot N_2$

We have:

$V_1=12,000\ V\\V_2=120\ V\\N_2=134$

Calculate N1

$\displaystyle N_1=\frac{12,000}{120}\cdot 134=13,400$

The primary coil has 13,400 turns

8 0

3 years ago

what is the cost of monthly (30 days) electric bill of ana if her city's cost of electricity is 0.05$ per kwh and she uses three

Serjik [45]

Answer:

1kW = 1000W

600W = 0.6kW

Cost of electric bill = 0.6kWh × 24 × 30 × $0.05

= $21.60

8 0

3 years ago

A space station of diameter 20.0 meters is turning about its axis to simulate gravity at its center rim. How fast must it rotate

bezimeni [28]

Answer:

9.89 m/s

Explanation:

d = diameter of the space station = 20.0 m

r = radius of the space station

radius of the space station is given as

r = (0.5) d

r = (0.5) (20.0)

r = 10 m

a = acceleration produced at outer rim = 9.80 m/s²

v = speed at which it rotates

acceleration is given as

$a = \frac{v^{2}}{r}$

$9.80 = \frac{v^{2}}{10}$

v = 9.89 m/s

4 0

4 years ago

How can a bulb be resistor?

valkas [14]

Answer: The reason a light bulb glows is that electricity is forced through tungsten, which is a resistor. The energy is released as light and heat. A conductor is the opposite of a resistor. Electricity travels easily and efficiently through a conductor, with almost no other energy released as it passes.

Explanation:

5 0

3 years ago

Read 2 more answers

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masya89 [10]

Answer:

i dont know

Explanation:

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3 years ago