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weqwewe [10]
3 years ago
13

To the speaker makes the sound louder.

Physics
1 answer:
Damm [24]3 years ago
4 0

Answer:

the right control panel.

Place the listener at a certain distance away from the speakers. Slowly move the listener up and down. What do y

Explanation:

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The primary coil of a transformer has 200 turns and the secondary coil has 800 turns. The power supplied to the primary coil is
Arisa [49]

Answer:

400 Watts

Explanation:

The main function of a voltage transformer is to change alternating current (ac) voltage from one voltage level to another. The relationship between the primary coil and secondary coil of a transformer is a function of ratio of the voltage or current and number of turns or loop. The ratio of the voltages between the two coils is equal to the ratio of number of loops in the two coils.

                  \frac{V_{out} }{V_{in}} = \frac{V_{s}}{p}

Varying the number of winding in the primary and secondary coils allows the transformer to step-up or step-down voltages while power is neither increased nor decreased in the primary or secondary except for some minor losses such as iron losses, copper losses, hysteresis losses, eddy current losses, stray loss, and dielectric losses. Therefore, the power in the primary and secondary are the same. The power supplied to the 20-ohm resistor terminal in the secondary coil will be 400 Watts.

5 0
3 years ago
Describes at least three everyday things that exist or occur because of science
klasskru [66]
1. Being on your phone.
2. Drink juice, soda, tea, etc.
3. Cook.

4 0
3 years ago
A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls
nekit [7.7K]

Given:

density of air at inlet, \rho_{a} = 1.20 kg/m_{3}

density of air at inlet, \rho_{b} = 1.05 kg/m_{3}

Solution:

Now,

\dot{m} = \dot{m_{a}} = \dot{m_{b}}

\rho_{a} A v_{a} = \rho _{b} Av_{b}                        (1)

where

A = Area of cross section

v_{a} = velocity of air at inlet

v_{b} = velocity of air at outlet

Now, using eqn (1), we get:

\frac{v_{b}}{v_{a}} = \frac{\rho_{a}}{\rho_{b}}

\frac{v_{b}}{v_{a}} = \frac{1.20}{1.05} = 1.14

% increase in velocity = 1.14\times 100 =114%

which is 14% more

Therefore % increase in velocity is 14%

5 0
3 years ago
Read 2 more answers
Nancy applies a force to a violin string by pulling her bow across it. The vibrations of the string produce sound waves, which c
ra1l [238]

Answer:

option a) sound is the right answer

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3 years ago
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Stems tend to grow in Or against the direction of gravity
Mekhanik [1.2K]
Against due to the fact that they grow up and gravity goes down. 
5 0
3 years ago
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